Nissan Maxima 2004 Workshop Manual

F BRAKES

SECTION

BRAKE CONTROL SYSTEM

B

C

D

A

E

CONTENTS

ABS

PRECAUTIONS .......................................................... 4

Precautions for Supplemental Restraint System

(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-

SIONER” .................................................................. 4

Precautions for Brake System .................................. 4

Precautions When Using CONSULT-II ..................... 4

CHECK POINTS FOR USING CONSULT-II ......... 4

Precautions for Brake Control .................................. 5

Precautions for CAN System ................................... 5

Wiring Diagrams and Trouble Diagnosis .................. 6

PREPARATION ........................................................... 7

Special Service Tool ................................................. 7

Commercial Service Tools ........................................ 7

SYSTEM DESCRIPTION ............................................ 8

System Diagram ....................................................... 8

ABS Function ........................................................... 8

EBD Function ........................................................... 8

Wheel Sensors ......................................................... 9

Fail-Safe Function .................................................... 9

ABS/EBD SYSTEM ............................................... 9

Hydraulic Circuit Diagram ...................................... 10

CAN COMMUNICATION ...........................................11

System Description .................................................11

TROUBLE DIAGNOSIS ............................................ 12

How to Perform Trouble Diagnoses for Quick and

Accurate Repair ..................................................... 12

INTRODUCTION ................................................. 12

WORK FLOW ...................................................... 13

CLARIFY CONCERN .......................................... 14

EXAMPLE OF DIAGNOSIS SHEET ................... 14

Schematic .............................................................. 16

Wiring Diagram — ABS — ..................................... 17

Basic Inspection ..................................................... 21

BRAKE FLUID LEVEL, FLUID LEAK, AND

BRAKE PAD INSPECTION ................................. 21

POWER SYSTEM TERMINAL LOOSENESS

AND BATTERY INSPECTION ............................ 21

ABS WARNING LAMP INSPECTION ................. 21

BRC-1

Warning Lamp and Indicator Timing ....................... 21

Control Unit Input/Output Signal Standard ............. 22

REFERENCE VALUE FROM CONSULT-II ......... 22

CONSULT-II Function ............................................. 24

CONSULT-II FUNCTION APPLICATION ............ 24

CONSULT-II BASIC OPERATION PROCEDURE

... 24

SELF-DIAGNOSIS .............................................. 25

DATA MONITOR ................................................. 27

ACTIVE TEST ..................................................... 29

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC

ITEMS ........................................................................ 31

Wheel Sensor System Inspection ........................... 31

Engine System Inspection ...................................... 32

ABS Control Unit Inspection ................................... 33

BRC

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Stop Lamp Switch System Inspection .................... 34

ABS Control Unit Power and Ground Systems

Inspection ............................................................... 35

CAN Communication System Inspection ................ 36

TROUBLE DIAGNOSES FOR SYMPTOMS ............ 37

ABS Works Frequently ........................................... 37

Unexpected Pedal Action ....................................... 38

Long Stopping Distance .......................................... 39

ABS Does Not Work ............................................... 39

Pedal Vibration or ABS Operation Noise ................ 39

ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On ........................................ 40

ABS Warning Lamp Stays On When Ignition Switch

Is Turned On ........................................................... 40

WHEEL SENSORS ................................................... 41

Removal and Installation ........................................ 41

SENSOR ROTOR ..................................................... 42


REMOVAL ........................................................... 42

INSTALLATION ................................................... 42

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ... 43


REMOVAL ........................................................... 43

INSTALLATION ................................................... 43

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TCS/ABS

PRECAUTIONS ......................................................... 45



SIONER” ................................................................. 45

Precautions for Brake System ................................ 45

Precautions When Using CONSULT-II ................... 45

CHECK POINTS FOR USING CONSULT-II ........ 45

Precautions for Brake Control ................................ 46

Precautions for CAN System .................................. 46

Wiring Diagrams and Trouble Diagnosis ................ 47

PREPARATION ......................................................... 48

Special Service Tool ............................................... 48

Commercial Service Tools ...................................... 48

SYSTEM DESCRIPTION .......................................... 49

System Diagram ..................................................... 49

ABS Function .......................................................... 49

EBD Function ......................................................... 49

TCS Function .......................................................... 49

Wheel Sensors ....................................................... 50

Fail-Safe Function .................................................. 50

ABS/EBD SYSTEM ............................................. 50

TCS SYSTEM ...................................................... 50

Hydraulic Circuit Diagram ....................................... 51

CAN COMMUNICATION ........................................... 52

System Description ................................................. 52

TROUBLE DIAGNOSIS ............................................ 53


Accurate Repair ...................................................... 53

INTRODUCTION ................................................. 53

WORK FLOW ...................................................... 54

CLARIFY CONCERN .......................................... 55

EXAMPLE OF DIAGNOSIS SHEET .................... 55

Component Parts and Harness Connector Location ... 56

Schematic ............................................................... 57

Wiring Diagram — TCS — ..................................... 58

Basic Inspection ..................................................... 62


BRAKE PAD INSPECTION ................................. 62


AND BATTERY INSPECTION ............................. 62

ABS WARNING LAMP AND SLIP INDICATOR

LAMP INSPECTION ............................................ 62

Warning Lamp and Indicator Timing ....................... 62

Control Unit Input/Output Signal Standard .............. 63

REFERENCE VALUE FROM CONSULT-II ......... 63

CONSULT-II Function ............................................. 65

CONSULT-II FUNCTION APPLICATION ............. 65


... 65

SELF-DIAGNOSIS .............................................. 66

DATA MONITOR .................................................. 68

ACTIVE TEST ..................................................... 70


ITEMS ........................................................................ 73

Wheel Sensor System Inspection ........................... 73

Engine System Inspection ...................................... 74

ABS/TCS Control Unit Inspection ........................... 75

Actuator Motor, Motor Relay, and Circuit Inspection ...75

Stop Lamp Switch System Inspection .....................76

ABS/TCS Control Unit Power and Ground Systems

Inspection ................................................................77

CAN Communication System Inspection ................78

TROUBLE DIAGNOSES FOR SYMPTOMS .............79

ABS Works Frequently ............................................79

Unexpected Pedal Action ........................................80

Long Stopping Distance ..........................................81

ABS Does Not Work ...............................................81

Pedal Vibration or ABS Operation Noise ................81

ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On .........................................82


Is Turned On ...........................................................82

Vehicle Jerks During TCS Activation ......................83

WHEEL SENSORS ...................................................84

Removal and Installation .........................................84

SENSOR ROTOR ......................................................85


REMOVAL ............................................................85

INSTALLATION ....................................................85

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ...86


REMOVAL ............................................................86

INSTALLATION ....................................................86

VDC/TCS/ABS

PRECAUTIONS .........................................................88



SIONER” .................................................................88

Precautions for Brake System ................................88

Precautions When Using CONSULT-II ...................88

CHECK POINTS FOR USING CONSULT-II ........88

Precautions for Brake Control .................................89

Precautions for CAN System ..................................89

Wiring Diagrams and Trouble Diagnosis .................90

PREPARATION .........................................................91

Special Service Tool ................................................91

Commercial Service Tools ......................................91

SYSTEM DESCRIPTION ...........................................92

System Components ...............................................92

ABS Function ..........................................................92

EBD Function ..........................................................92

TCS Function ..........................................................93

VDC Function ..........................................................93

Wheel Sensors ........................................................94

Fail-Safe Function ...................................................94

ABS/EBD SYSTEM ..............................................94

VDC/TCS SYSTEM .............................................94

Hydraulic Circuit Diagram .......................................95

CAN COMMUNICATION ...........................................96

System Description .................................................96

TROUBLE DIAGNOSIS ............................................97


Accurate Repair ......................................................97

INTRODUCTION ..............................................

BRC-2

WORK FLOW ...................................................... 98

CLARIFY CONCERN .......................................... 99

EXAMPLE OF DIAGNOSIS SHEET ................... 99

Schematic ............................................................ 101

Wiring Diagram — VDC — ................................... 102

Basic Inspection ................................................... 108


BRAKE PAD INSPECTION ............................... 108


AND BATTERY INSPECTION .......................... 108

ABS WARNING LAMP, SLIP INDICATOR LAMP

Warning Lamp and Indicator Timing .................... 108

Control Unit Input/Output Signal Standard ........... 109

REFERENCE VALUE FROM CONSULT-II ....... 109

CONSULT-II Function ...........................................112

CONSULT-II FUNCTION APPLICATION ...........112


..113

SELF-DIAGNOSIS .............................................113

DATA MONITOR ................................................116

ACTIVE TEST ....................................................119


ITEMS ..................................................................... 121

Wheel Sensor System Inspection ........................ 121

Engine System Inspection .................................... 122

ABS/TCS/VDC Control Unit Inspection ................ 123

Steering Angle Sensor System Inspection ........... 123

Solenoid and VDC Change-Over Valve System

Inspection ............................................................. 126

Stop Lamp Switch System Inspection .................. 128

ABS/TCS/VDC Control Unit Power and Ground

Systems Inspection .............................................. 129

Brake Fluid Level Sensor System Inspection ....... 130

CAN Communication System Inspection .............. 130

Component Inspection .......................................... 131

VDC OFF SWITCH ........................................... 131

TROUBLE DIAGNOSES FOR SYMPTOMS .......... 132

ABS Works Frequently ......................................... 132

Unexpected Pedal Action ..................................... 133

Long Stopping Distance ........................................ 134

ABS Does Not Work ............................................. 134

Pedal Vibration or ABS Operation Noise .............. 134

ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On ...................................... 135


Is Turned On ......................................................... 135

Vehicle Jerks During TCS/VDC Activation ........... 136

ON-VEHICLE SERVICE .......................................... 137

Adjustment of Steering Angle Sensor Neutral Position ........................................................................ 137

Calibration of Yaw Rate/Side/Decel G Sensor ..... 137

WHEEL SENSORS ................................................. 139

Removal and Installation ...................................... 139

SENSOR ROTOR ................................................... 140


REMOVAL ......................................................... 140

INSTALLATION ................................................. 140

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) . 141


REMOVAL ......................................................... 141

INSTALLATION ................................................. 141

STEERING ANGLE SENSOR ................................ 143


G SENSOR .............................................................. 144


REMOVAL ......................................................... 144

INSTALLATION ................................................. 144

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B

C

D

E

BRC

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BRC-3

PRECAUTIONS

[ABS]

PRECAUTIONS

PFP:00001

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT

BELT PRE-TENSIONER”

EFS002PT

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. Information necessary to service the system safely is included in the SRS and SB section of this Service Manual.

WARNING:

● To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer.

●

●

Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air

Bag Module, see the SRS section.

Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors.

Precautions for Brake System

EFS002PU

CAUTION:

●

Recommended fluid is brake fluid “DOT 3”.

●

Never reuse drained brake fluid.

●

●

●

●

●

Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is splashed on painted areas, wash it away with water immediately.

To clean or wash all parts of master cylinder and disc brake caliper, use clean brake fluid.

Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.

Use flare nut wrench when removing and installing brake tube.

If a brake fluid leak is found, the part must be disassembled without fail. Then it has to be replaced with a new one if a defect exists.

●

●

Turn the ignition switch OFF and remove the connector of the ABS actuator control unit or the battery terminal before performing the work.

Always torque brake lines when installing.

● Burnish the brake contact surfaces after refinishing or replacing rotors, after replacing pads, or if a soft pedal

SBR686C occurs at very low mileage.

Refer to BR-28, "Brake Burnishing" (front disc brake) or BR-35, "Brake Burnishing" (Rear disc brake).

WARNING:

● Clean brake pads and shoes with a waste cloth, then wipe with a dust collector.

Precautions When Using CONSULT-II

EFS0031O

When connecting CONSULT-II to data link connector, connect them through CONSULT-II CONVERTER.

CAUTION:

If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication.

CHECK POINTS FOR USING CONSULT-II

1.

Has CONSULT-II been used without connecting CONSULT-II CONVERTER on this vehicle?

●

●

If YES, GO TO 2.

If NO, GO TO 5.

BRC-4

PRECAUTIONS

[ABS]

2.

Is there any indication other than indications relating to CAN communication system in the self-diagnosis results?

●

●

If YES, GO TO 3.

If NO, GO TO 4.

3.

Based on self-diagnosis results unrelated to CAN communication, carry out the inspection.

4.

Malfunctions may be detected in self-diagnosis depending on control units carrying out CAN communication. Therefor, erase the self-diagnosis results.

5.

Diagnose CAN communication system. Refer to LAN-8, "CAN COMMUNICATION" .

A

B

C

Precautions for Brake Control

●

●

●

●

●

●

●

EFS002UZ

During ABS operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is normal.

Just after starting vehicle, the brake pedal may vibrate or a motor operating noise may be heard from engine compartment. This is a normal status of operation check.

Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel, or snow-covered (fresh, deep snow) roads.

When an error is indicated by ABS or another warning lamp, collect all necessary information from customer (what symptoms are present under what conditions) and check for simple causes before starting diagnosis. Besides electrical system inspection, check booster operation, brake fluid level, and fluid leaks.

If incorrect tire sizes or types are installed on the vehicle or brake pads are not Genuine NISSAN parts, stopping distance or steering stability may deteriorate.

If there is a radio, antenna or related wiring near control module, ABS function may have a malfunction or error.

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness pinches, open circuits or improper wiring.

Precautions for CAN System

●

●

●

●

Do not apply voltage of 7.0V or higher to terminal to be measured.

Maximum open terminal voltage of tester in use must be less than 7.0V.

Before checking harnesses, turn ignition switch OFF and disconnect battery negative cable.

Area to be repaired must be soldered and wrapped with tape.

Make sure that fraying of twisted wire is within 110 mm (4.33 in).

EFS002V2

D

E

BRC

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PKIA0306E

●

Do not make a bypass connection to repaired area. (If the circuit is bypassed, characteristics of twisted wire will be lost.)

PKIA0307E

BRC-5

PRECAUTIONS

Wiring Diagrams and Trouble Diagnosis

When you read wiring diagrams, refer to the following:

●

GI-12, "How to Read Wiring Diagrams"

● PG-3, "POWER SUPPLY ROUTING CIRCUIT"

When you perform trouble diagnosis, refer to the following:

●

●

GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES"

GI-25, "How to Perform Efficient Diagnosis for an Electrical Incident"

[ABS]

EFS002PV

BRC-6

PREPARATION

[ABS]

PREPARATION

Special Service Tool

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

PFP:00002

EFS002VV

Tool number

(Kent-Moore No.)

Tool name

Description

A

B

C

(J-45741)

ABS active wheel sensor tester

Checking operation of ABS active wheel sensor

D

WFIA0101E

Commercial Service Tools

Tool name Description

EFS002VW

E

BRC

1. Flare nut crowfoot

a: 10mm (0.39 in)/12mm (0.47 in)

2. Torque wrench

Removing and installing brake piping

G

H

S-NT360

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BRC-7

SYSTEM DESCRIPTION

System Diagram


[ABS]

PFP:00000

EFS002VF

WFIA0118E

●

●

ABS Function

●

●

●

●

EFS002VG

The Anti-Lock Brake System detects wheel revolution while braking and improves handling stability during sudden braking by electrically preventing wheel lockup. Maneuverability is also improved for avoiding obstacles.

If the electrical system malfunctions, the Fail-Safe function is activated, the ABS becomes inoperative and the ABS warning lamp turns on.

The electrical system can be diagnosed using CONSULT-II.


Just after starting the vehicle, the brake pedal may vibrate or a motor operating noise may be heard from engine compartment. This is a normal status of operation check.


EBD Function

●

●

●

●

●

●

EFS002VH

Electronic Brake Distribution is a function that detects subtle slippages between the front and rear wheels during braking, and it improves handling stability by electronically controlling the brake fluid pressure which results in reduced rear wheel slippage.

If the electrical system malfunctions, the Fail-Safe function is activated, the EBD and ABS become inoperative, and the ABS warning lamp and BRAKE warning lamp are turned on.


During EBD operation, the brake pedal may vibrate lightly and a mechanical noise may be heard. This is normal.


Stopping distance may be longer than that of vehicles without EBD when vehicle drives on rough, gravel, or snow-covered (fresh, deep snow) roads.

BRC-8


Wheel Sensors

The front sensor units consist of a gear-shaped sensor rotor and a sensor element. The element contains a magnet around which a coil is wound. The front wheel sensors are installed on the front of the wheel knuckles. As the wheel rotates, the sensor generates a square-wave signal. The frequency increases as the wheel speed increases.

[ABS]

EFS002VX

A

B

LBR333

The rear sensor units consist of wheel hubs with a series of internal magnets and a sensor element. The rear wheel sensors are installed on the inner side of the wheel knuckles. As the wheel rotates, the sensor generates a square-wave signal. The frequency increases as the wheel speed increases.

BRC

G

H

WFIA0033E

Fail-Safe Function

CAUTION:

If the Fail-Safe function is activated, perform the Self Diagnosis for ABS system.

EFS002VK

ABS/EBD SYSTEM

In case of an electrical malfunction with the ABS, the ABS warning lamp will turn on. In case of an electrical malfunction with the EBD system, the BRAKE warning lamp and the ABS warning lamp will turn on.

The system will revert to one of the following conditions of the Fail-Safe function.

1.

For ABS malfunction, only the EBD is operative and the condition of the vehicle is the same condition of vehicles without ABS system.

2.

For EBD malfunction, the EBD and ABS become inoperative, and the condition of the vehicle is the same as the condition of vehicles without ABS or EBD system.

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D

E

BRC-9

Hydraulic Circuit Diagram


[ABS]

EFS002VL

PFIA0422E

BRC-10

CAN COMMUNICATION

[ABS]


System Description

PFP:23710

EFS002W0

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.

Each control unit transmits/receives data but selectively reads required data only.

Refer to LAN-8, "CAN COMMUNICATION" .

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BRC

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BRC-11

TROUBLE DIAGNOSIS


How to Perform Trouble Diagnoses for Quick and Accurate Repair

INTRODUCTION

The ABS system has an electronic control unit to control major functions. The control unit accepts input signals from sensors and controls actuator operation. It is also important to check for conventional problems such as air leaks in the booster or lines, lack of brake fluid, or other problems with the brake system.

It is much more difficult to diagnose a problem that occurs intermittently rather than continuously. Most intermittent problems are caused by poor electrical connections or faulty wiring. In this case, careful checking of suspicious circuits may help prevent the replacement of good parts.

A visual check only may not find the cause of the problem, so a road test should be performed.

Before undertaking actual checks, take just a few minutes to talk with a customer who approaches with an ABS complaint. The customer is a very good source of information on such problems, especially intermittent ones. Through the talks with the customer, find out what symptoms are present and under what conditions they occur.

Start your diagnosis by looking for “conventional” problems first.

This is one of the best ways to troubleshoot brake problems on an

ABS equipped vehicle. Also check related Service Bulletins for information.

[ABS]

PFP:00000

EFS002Z3

SEF233G

SEF234G

BRC-12

WORK FLOW


[ABS]

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BRC

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A

B

LFIA0197E

BRC-13


CLARIFY CONCERN

●

●

A customer's description of a vehicle concern may vary depending on the individual. It is important to clarify the customer's concern.

Ask the customer about what symptoms are present under what conditions. Use this information to reproduce the symptom while driving.

● It is also important to use the diagnosis sheet to understand what type of trouble the customer is having.

EXAMPLE OF DIAGNOSIS SHEET

[ABS]

SBR339B

BRC-14

WFIA0097E


Component Parts and Harness Connector Location

[ABS]

EFS002Z4

A

B

BRC

G

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D

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WFIA0099E

BRC-15

Schematic


[ABS]

EFS002Z5

BRC-16

WFWA0016E

Wiring Diagram — ABS —


[ABS]

EFS002Z6

A

B

BRC

G

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WFWA0017E

BRC-17


[ABS]

BRC-18

WFWA0018E


[ABS]

K

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BRC

G

H

C

D

E

A

B

WFWA0019E

BRC-19


[ABS]

BRC-20

WFWA0020E


[ABS]

Basic Inspection

BRAKE FLUID LEVEL, FLUID LEAK, AND BRAKE PAD INSPECTION

1.

Check fluid level in the brake fluid reservoir. If fluid level is low, add fluid.

EFS002Z7

2.

Check the brake piping and around the ABS actuator and electric unit (control unit) for leaks. If there is leaking or seeping fluid, check the following items.

● If ABS actuator and electric unit (control unit) connection is loose, tighten the piping to the specified torque and recheck for leaks.

●

●

If there is damage to the connection flare nut or ABS actuator and electric unit (control unit) screw, replace the damaged part and recheck for leaks.

When there is fluid leaking or seeping from a fluid connection, use a clean cloth to wipe off the fluid and recheck for leaks. If fluid is still seeping out, replace the damaged part. If the fluid is leaking at the ABS actuator and electric unit (control unit), replace the ABS actuator and electric unit (control unit) assembly.

CAUTION:

The ABS actuator and electric unit (control unit) cannot be disassembled and must be replaced as an assembly.

3.

Check the brake pads for excessive wear.

A

B

C

D

E

BRC

POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTION

Make sure the battery positive cable, negative cable and ground connection are not loose. In addition, make sure the battery is sufficiently charged.

ABS WARNING LAMP INSPECTION

1.

Make sure ABS warning lamp turns on for approximately 1 second when the ignition switch is turned ON.

Check CAN communications. If there are no errors with CAN communication system, check combination meter. Refer to DI-5, "COMBINATION METERS" .

2.

Make sure the lamp turns off approximately 1 second after the ignition switch is turned ON. If the lamp does not turn off, conduct self-diagnosis.

3.

Make sure ABS warning lamp turns off approximately 2 seconds after the engine is started. If ABS warning lamp has not turned off 10 seconds after the engine has been started, conduct self-diagnosis of the

ABS actuator and electric unit (control unit).

4.

After conducting the self-diagnosis, be sure to erase the error memory. Refer to

BRC-24, "CONSULT-II

Function" .

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Warning Lamp and Indicator Timing

EFS002Z8

×

: ON – : Lamp OFF

K

Condition

ABS warning lamp

–

Remarks

–

L

When the ignition switch is OFF

After the ignition switch is turned ON

For approx. 0.5 seconds

Ignition switch ON

Approx. 0.5 seconds later

×

–

–

Lamp goes off approx. 2 seconds after the engine start.

M

×

ABS malfunction

×

–

When the ABS control unit is malfunctioning (power supply or ground malfunction).

BRC-21


[ABS]

Control Unit Input/Output Signal Standard

REFERENCE VALUE FROM CONSULT-II

EFS002Z9

CAUTION:

The display shows the control unit calculation data, so a normal value might be displayed even in the event the output circuit (harness) is open or short circuited.

Monitor item

SLCT LVR POSI

GEAR

FR RH SENSOR

FR LH SENSOR

RR RH SENSOR

RR LH SENSOR

ACCEL POS SIG

ENGINE SPEED·

BATTERY VOLT

STOP LAMP SW

ABS WARN LAMP

MOTOR RELAY

ACTUATOR RLY

FR LH IN SOL

FR LH OUT SOL

FR RH IN SOL

FR RH OUT SOL

RR RH IN SOL

RR RH OUT SOL

RR LH IN SOL

RR LH OUT SOL

Data monitor

Display content

PNP switch signal ON/

OFF condition

A/T gear position

Wheel speed

Condition

A/T shift position = N or P position

A/T shift position = other than

N and P positions

1:1st gear

2:2nd gear

3:3rd gear

4:4th gear

Vehicle stopped

Vehicle running (Note 1)

ON

OFF

0 [km/h (MPH)]

Almost in accordance with speedometer display

(within

±

10%)

Open/close condition of throttle valve (linked with accelerator pedal).

Accelerator pedal not depressed (ignition switch is

ON)

Depress accelerator pedal

(ignition switch is ON)

With engine stopped

Reference value in normal operation

0%

0 to 100%

With engine running

Engine running

0 rpm

Almost in accordance with tachometer display

Battery voltage supplied to ABS actuator and electric unit (control unit)

Ignition switch ON 10 to 16V

Brake pedal depressed ON

Brake pedal operation

Brake pedal not depressed OFF

ABS warning lamp ON condition (Note 2)

ABS warning lamp ON

ABS warning lamp OFF

ON

OFF

Note: Error inspection checklist

BRC-36, "CAN Communication System Inspection"


BRC-31, "Wheel Sensor

System Inspection"


BRC-32, "Engine System

Inspection"

BRC-35, "ABS Control

Unit Power and Ground

Systems Inspection"

BRC-34, "Stop Lamp

Switch System Inspection"

BRC-40, "ABS Warning

Lamp Does Not Come

On When Ignition Switch

Is Turned On"

Operation status of motor and motor relay

Actuator relay operation status

Solenoid valve operation

Ignition switch ON or engine running (ABS not operated)

Ignition switch ON or engine running (ABS operated)

Vehicle stopped (Ignition switch ON)

Vehicle stopped (Engine running)

Actuator (solenoid) is active

(“ACTIVE TEST” with CON-

SULT-II) or actuator relay is inactive (in fail-safe mode).

OFF

ON

OFF

ON

ON

BRC-33, "Actuator Motor,

Motor Relay, and Circuit

Inspection"



Inspection"

—

When actuator (solenoid) is not active and actuator relay is active (ignition switch ON).

OFF

BRC-22


[ABS]

Data monitor

Monitor item Display content

Condition


FLUID LEV SW

ON/OFF status of brake fluid level switch

When brake fluid level switch

ON


OFF

ON

OFF

ABS FAIL SIG

EBD FAIL SIG

Fail signal status

ABS fail

EBD fail

OFF

Note 1: Confirm tire pressure is normal.

Note 2: ON/OFF timing of ABS warning lamp

ON: For approximately 1.8 seconds after ignition switch is turned ON, or when a malfunction is detected.


DI-45, "WARNING

LAMPS"

ABS system

EBD system

A

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BRC

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BRC-23


[ABS]

CONSULT-II Function

EFS002ZA

CAUTION:

●

When the self-diagnosis, data monitor, or active test functions are being executed, EBD and ABS control is disabled.

●

●

●

When using CONSULT-II to conduct ABS control unit self-diagnosis, active test, work support, etc., first stop engine, connect the CONSULT-II, and select “ABS”.

CONSULT-II self-diagnosis results are displayed without regard to occurrence timing. In some cases later ones (timing value is small) appear on the next screen.

When an error is shown by the CONSULT-II SELF-DIAG RESULTS and CONSULT-II is used to conduct an active test, an engine system malfunction may be shown, but restarting the engine will return the status to normal.

CONSULT-II FUNCTION APPLICATION

Wheel sensors

Stop lamp switch

Solenoid valves

Actuator relay

Motor relay

Item

ABS warning lamp

Battery voltage

ABS actuator and electric unit (control unit)

ABS actuator motor

CAN communication

Engine speed signal

Throttle angle

Gear

Selector lever position

EBD/ABS signals

Brake fluid level switch

×

: Applicable

–: Not applicable

Self-diagnosis

×

×

×

×

×

–

×

×

–

–

×

×

×

×

×

–

Data monitor

×

×

×

×

×

×

×

–

×

–

×

×

×

×

×

×

–

–

–

–

–

–

×

–

Active test

–

–

–

–

×

×

×

–

CONSULT-II BASIC OPERATION PROCEDURE

1.

Turn ignition switch OFF.

2.

Connect CONSULT-II and CONSULT-II CONVERTER to the data link connector.

CAUTION:

If CONSULT-II is used with no connection of CONSULT-II

CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication.

3.

Turn ignition switch ON.

BBIA0002E

BRC-24


4.

Touch “START (NISSAN BASED VHCL)”.

5.

Touch “ABS” in the “Diagnosis System Selection” screen.

If “ABS” is not indicated, go to GI-36, "CONSULT-II Data Link

Connector (DLC) Circuit" .

G

PKIA2102E

6.

Select the required diagnostic location from the “Diagnosis Mode Selection” screen.

For further information, see the CONSULT-II Operation Manual.

SELF-DIAGNOSIS

Description

If an error is detected in the system, the ABS warning lamp will turn on. In this case, perform self-diagnosis as follows:

Operation Procedure

1.


2.


CAUTION:


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3.


4.

Start engine and drive at approximately 30 km/h (19 MPH) for approximately 1 minute.

5.

After stopping the vehicle, with the engine running, touch “START (NISSAN BASED VHCL)”, “ABS”,

“SELF-DIAG RESULTS” in order on the CONSULT-II screen.

CAUTION:

If “START (NISSAN BASED VHCL)” is touched immediately after starting the engine or turning on the ignition switch, “ABS” might not be displayed in the System Selection screen. In this case, repeat the operation from step 1.

6.

The self-diagnostic results are displayed. (If necessary, the self-diagnostic results can be printed out by touching “COPY”.)

●

When “NO FAILURE” is displayed, check the ABS warning lamp.

7.

Conduct the appropriate inspection from the display item list, and repair or replace the malfunctioning component.

8.


CAUTION:

●

When a wheel sensor “short-circuit” is detected, if the vehicle is not driven at 30 km/h (19 MPH) for at least 1 minute, the ABS warning lamp will not turn off even if the malfunction is repaired.

9.

Turn ignition switch OFF to prepare for erasing the memory.

M

BRC-25

[ABS]

C

SKIA3098E

D

E

A

B

BRC


[ABS]

10. Start the engine and touch “START (NISSAN BASED VHCL)”, “ABS”, “SELF-DIAG RESULTS”, “ERASE

MEMORY” in order on the CONSULT-II screen to erase the error memory.

If “ABS” is not indicated, go to GI-36, "CONSULT-II Data Link Connector (DLC) Circuit" .

CAUTION:

If the error memory is not erased, re-conduct the operation from step 5.

11. For the final inspection, drive at approximately 30 km/h (19 MPH) for approximately 1 minute and confirm that the ABS warning lamp are off.

Display Item List

Self-diagnostic item

FR LH SENSOR 1

[C1104]

RR RH SENSOR 1

[C1101

FR RH SENSOR 1

[C1103]

RR LH SENSOR 1

[C1102]

Malfunction detecting condition

Circuit of front LH wheel sensor is open

Circuit of rear RH wheel sensor is open

Circuit of front RH wheel sensor is open

Circuit of rear LH wheel sensor is open

Check system

FR LH SENSOR 2

[C1108]

RR RH SENSOR 2

[C1105]

FR RH SENSOR 2

[C1107]

RR LH SENSOR 2

[C1106]

Circuit of front LH wheel sensor is shorted, or sensor power voltage is unusual. ABS actuator and electric unit (control unit) cannot identify sensor pulses, because of large gap between wheel sensor and sensor rotor.

Circuit of rear RH wheel sensor is shorted, or sensor power voltage is unusual. ABS actuator and electric unit (control unit) cannot identify sensor pulses, because of large gap between wheel sensor and sensor rotor.

Circuit of front RH wheel sensor is shorted, or sensor power voltage is unusual. ABS actuator and electric unit (control unit) cannot identify sensor pulses, because of large gap between wheel sensor and sensor rotor.

Circuit of rear LH wheel sensor is shorted, or sensor power voltage is unusual. ABS actuator and electric unit (control unit) cannot identify sensor pulses, because of large gap between wheel sensor and sensor rotor.


System Inspection"

(Note 1)

STOP LAMP SW 1

[C1116]

Stop lamp switch or circuit malfunction.

BRC-34, "Stop Lamp


FR LH IN ABS SOL

[C1120]

FR LH OUT ABS SOL

[C1121]

RR RH IN ABS SOL

[C1126]

RR RH OUT ABS SOL

[C1127]

FR RH IN ABS SOL

[C1122]

FR RH OUT ABS SOL

[C1123]

RR LH IN ABS SOL

[C1124]

RR LH OUT ABS SOL

[C1125]

Circuit of front LH IN ABS solenoid is open or shorted, or control line is open or shorted to power supply or ground.

Circuit of front LH OUT ABS solenoid is open or shorted, or control line is open or shorted to power supply or ground.

Circuit of rear RH IN ABS solenoid is open or shorted, or control line is open or shorted to power supply or ground.

Circuit of rear RH OUT ABS solenoid is open or shorted, or control line is open or shorted to power supply or ground.

Circuit of front RH IN ABS solenoid is open or shorted, or control line is open or shorted to power supply or ground.

Circuit of front RH OUT ABS solenoid is open or shorted, or control line is open or shorted to power supply or ground.

Circuit of rear LH IN ABS solenoid is open or shorted, or control line is open or shorted to power supply or ground.

Circuit of rear LH OUT ABS solenoid is open or shorted, or control line is open or shorted to power supply or ground.

—

BRC-26


[ABS]


PUMP MOTOR (Note 3)

[C1111]

BATTERY VOLTAGE

[ABNORMAL]

[C1109]

CONTROLLER FAILURE

[C1110]

CAN COMM CIRCUIT

[U1000]

BR FLUID LEVEL LOW

[C1155]

ENGINE SPEED SIG

ENGINE SIGNAL 1

[C1130]


During actuator motor operation with ON, when actuator motor turns OFF or when control line for actuator motor relay is open.

During actuator motor operation with OFF, when actuator motor turns ON or when control line for relay is shorted to ground.

ECM judges the communication between ABS control unit and

ECM is abnormal.

Check system

BRC-33, "Actuator

Motor, Motor Relay, and

Circuit Inspection"

ABS actuator and electric unit (control unit) power voltage is too low.

Internal malfunction of ABS actuator and electric unit (control unit)

● CAN communication line is open or shorted.

● ABS actuator and electric unit (control unit) internal malfunction

● Battery voltage for ECM is suddenly interrupted for approximately 0.5 seconds or more.

Brake fluid level drops or circuit between ABS actuator and electric unit (control unit) and brake fluid level switch is open or shorted.


Unit Power and Ground

Systems Inspection"


Unit Inspection"

BRC-36, "CAN Communication System Inspection" (Note 2)

DI-45, "WARNING

LAMPS"

Engine speed signal from ECM is abnormal.

ASCD brake switch or circuit malfunction.

BRC-32, "Engine System Inspection"


EC-665, "ASCD BRAKE

SWITCH"

STOP LAMP SW 2

[C1176]

Note 1. If wheel sensor 2 for each wheel is indicated, check ABS actuator and electric unit (control unit) power supply voltage in addition to wheel sensor circuit check.

Note 2. If multiple malfunctions are detected including CAN communication line [U1000], perform diagnosis for

CAN communication line first.

Note 3: "ACTUATOR RLY" on the CONSULT-II self-diagnosis results indicates the malfunction of the actuator motor relay or circuit.

DATA MONITOR


1.

After turning OFF the ignition switch, connect CONSULT-II and the CONVERTER to the data link connector.

CAUTION:


2.

Touch “START (NISSAN BASED VHCL)”, “ABS”, “DATA MONITOR” in order on the CONSULT-II screen.


CAUTION:

When “START (NISSAN BASED VHCL)” is touched immediately after starting the engine or turning on the ignition switch, “ABS” might not be displayed in the system selection screen. In this case, repeat the operation from step 2.

3.

Return to the Monitor Item Selection screen, and touch “C/U INPUT ITEM”, “MAIN ITEM” or “ITEM MENU

SELECTION”. Refer to the following information.

4.

When “START” is touched, the data monitor screen is displayed.

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BRC

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BRC-27


Item

(Unit)

GEAR

FR RH SENSOR

(km/h, MPH)

FR LH SENSOR

(km/h, MPH)

RR RH SENSOR

(km/h, MPH)

RR LH SENSOR

(km/h, MPH)

BATTERY VOLT

(V)

SLCT LVR POSI

ACCEL POS SIG

(%)

ENGINE SPEED

(rpm)

STOP LAMP SW

(ON/OFF)

ABS WARN LAMP

(ON/OFF)

FR LH IN SOL

(ON/OFF)

FR LH OUT SOL

(ON/OFF)

RR RH IN SOL

(ON/OFF)

RR RH OUT SOL

(ON/OFF)

FR RH IN SOL

(ON/OFF)

FR RH OUT SOL

(ON/OFF)

RR LH IN SOL

(ON/OFF)

RR LH OUT SOL

(ON/OFF)

MOTOR RELAY

(ON/OFF)

ACTUATOR RLY

(ON/OFF)


[ABS]

ECU INPUT

SIGNALS

×

Data monitor item selection

MAIN

SIGNALS

SELECTION

FROM

MENU

× ×

×

×

×

×

×

×

×

×

×

–

–

–

–

–

–

–

–

–

–

–

×

×

×

×

×

×

–

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

CAN DIAG

SUPPORT

MNTR

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Remarks

Gear position judged by PNP switch signal is displayed.

Wheel speed calculated by front RH wheel sensor signal is displayed.

Wheel speed calculated by front LH wheel sensor signal is displayed.

Wheel speed calculated by rear RH wheel sensor signal is displayed.

Wheel speed calculated by rear LH wheel sensor signal is displayed.

Voltage supplied to ABS actuator and electric unit (control unit) is displayed.

Shift position judged by PNP switch signal.

Throttle valve open/close status judged by LAN communication signal is displayed.

Engine speed judged by LAN communication signal is displayed.

Stop lamp switch (ON/OFF) status is displayed.

ABS warning lamp (ON/OFF) status is displayed.

Front LH IN ABS solenoid

(ON/OFF) status is displayed.

Front LH OUT ABS solenoid


Rear RH IN ABS solenoid


Rear RH OUT ABS solenoid


Front RH IN ABS solenoid


Front RH OUT ABS solenoid


Rear LH IN ABS solenoid


Rear LH OUT ABS solenoid


ABS motor relay signal (ON/

OFF) status is displayed.

ABS actuator relay signal


BRC-28


[ABS]

Item

(Unit)

ECU INPUT

SIGNALS


MAIN

SIGNALS

SELECTION

FROM

MENU

CAN DIAG

SUPPORT

MNTR

Remarks

ABS FAIL SIG

(ON/OFF)

EBD FAIL SIG

(ON/OFF)

FLUID LEV SW

(ON/OFF)

EBD SIGNAL

(ON/OFF)

ABS SIGNAL

(ON/OFF)

CAN COMM

(OK/NG)

CAN CIRC 1

(OK/UNKWN)

CAN CIRC 2

(OK/UNKWN)

CAN CIRC 3

(OK/UNKWN)

CAN CIRC 4

(OK/UNKWN)

CAN CIRC 5

(OK/UNKWN)

CAN CIRC 6

(OK/UNKWN)

CAN CIRC 7

(OK/UNKWN)

CAN CIRC CLC

(OK/UNKWN)

–

–

×

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

×

×

×

×

×

–

–

–

–

–

–

–

–

–

–

–

–

–

–

×

×

×

×

×

×

×

×

×

ABS fail signal (ON/OFF) status is displayed.

EBD fail signal (ON/OFF) status is displayed.

Brake fluid level switch (ON/


EBD operation (ON/OFF) status is displayed.

ABS operation (ON/OFF) status is displayed.

CAN communication signal

(OK/NG) status is displayed.


(OK/UNKWN) status is displayed.

TRQ MAP S/C

TRQ MAP N/A

×

: Applicable

–: Not applicable

–

–

–

–

×

×

–

–

S/C is selected for engine torque map

N/A is selected for engine

ACTIVE TEST

CAUTION:

● Do not perform active test while driving.

●

Make sure to completely bleed air from the brake system.

●

The ABS and brake (EBD) warning lamps turn on during the active test.


1.

Connect the CONSULT-II and CONVERTER to the data link connector and start the engine.

CAUTION:


2.

Touch “START (NISSAN BASED VHCL) ” on the display screen.

3.

Touch “ABS”.


4.

Touch “ACTIVE TEST”.

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BRC-29


5.

The test item selection screen is displayed.

6.

Touch necessary test item.

[ABS]

LBR379

7.

With the “MAIN ITEM” display shown in reverse, touch “START”.

8.

The Active Test screen will be displayed, so conduct the following test.

Solenoid Valve Operation Chart

ABS solenoid valve

Operation

FR RH SOL

FR RH ABS SOLE-

NOID (ACT)

FR LH SOL

FR LH ABS SOLE-

NOID (ACT)

RR RH SOL

RR RH ABS SOLE-

NOID (ACT)

RR LH SOL

RR LH ABS SOLE-

NOID (ACT)

FR RH IN SOL

FR RH OUT SOL

FR LH IN SOL

FR LH OUT SOL

RR RH IN SOL

RR RH OUT SOL

RR LH IN SOL

RR LH OUT SOL

RR RH IN SOL

RR RH OUT SOL

REAR SOL

RR LH IN SOL

RR LH OUT SOL

*: ON for 1 to 2 seconds after the touch, and then OFF

UP

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

KEEP

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

DOWN

ON

ON*

ON

ON*

ON

ON*

ON

ON*

ON

ON*

ON

ON*

UP

ABS solenoid valve (ACT)

OFF

ACTUA-

TOR UP

OFF

ACTUA-

TOR KEEP

OFF

OFF OFF OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

NOTE:

●

If active test is performed with brake pedal depressed, pedal stroke may change. This is normal.

●

●

“TEST IS STOPPED” is displayed approximately 10 seconds after operation starts.

After “TEST IS STOPPED” is displayed, to perform test again, repeat Step 6.

ABS Motor

Touch “ON” and “OFF” on the screen. Check that ABS motor relay operates as shown in table below.

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

Operation

ABS actuator relay

ABS motor relay

ON

ON

ON

OFF

ON

OFF

NOTE:

●


● “TEST IS STOPPED” is displayed approximately 10 seconds after operation starts.

SFIA0593E

BRC-30

TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS

[ABS]


Wheel Sensor System Inspection

INSPECTION PROCEDURE

1.

CONNECTOR INSPECTION

PFP:00000

EFS00309

A

B

Disconnect the ABS actuator and electric unit connector E125 and wheel sensor of malfunctioning code.

Check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

NG

>> GO TO 2.

>> Repair or replace as necessary.

2.

CHECK WHEEL SENSOR OUTPUT SIGNAL

C

D

1.

Disconnect connectors from wheel sensor of malfunction code No.

2.

Connect ABS active wheel sensor tester (J-45741) to wheel sensor using appropriate adapter.

3.

Turn on the ABS active wheel sensor tester power switch.

NOTE:

The green POWER indicator should illuminate. If the POWER indicator does not illuminate, replace the battery in the ABS active wheel sensor tester before proceeding.

4.

Spin the wheel of the vehicle by hand and observe the red SENSOR indicator on the ABS active wheel sensor tester. The red SENSOR indicator should flash on and off to indicate an output signal.

NOTE:

If the red SENSOR indicator illuminates but does not flash, reverse the polarity of the tester leads and retest.

Does the ABS active wheel sensor tester detect a signal?

Yes >> GO TO 3.

No >> GO TO 6.

E

BRC

G

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3.

CHECK TIRES

J

Check for inflation pressure, wear and size of each tire.

Are tire pressure and size correct and is tire wear within specifications?

Yes >> GO TO 4.

No >> Adjust tire pressure or replace tire(s).

4.

CHECK WHEEL BEARINGS

K

L

Check wheel bearing axial end play. Refer to FAX-5, "FRONT WHEEL BEARING" or RAX-5, "REAR WHEEL

BEARING" .

OK or NG

OK

NG

>> GO TO 5.

>> Repair as necessary. Refer to FAX-5, "FRONT WHEEL BEARING" or RAX-5, "REAR WHEEL

BEARING" .

5.

CHECK SENSOR ROTORS

Check sensor rotors for teeth damage.

OK or NG

OK

NG

>> GO TO 6.

>> Replace sensor rotor. Refer to

BRC-140, "Removal and Installation"

.

M

BRC-31


[ABS]

6.

CHECK WIRING HARNESS FOR SHORT CIRCUIT

1.

Disconnect ABS actuator and electric unit (control unit) connector and wheel sensor connector of malfunction code No.

2.

Check resistance between harness connector terminal and ground.

Continuity should not exist.

OK or NG

OK

NG

>> GO TO 7.

>> Repair the circuit.

WFIA0105E

7.

CHECK WIRING HARNESS FOR OPEN CIRCUIT

1.


2.

Check continuity between both wiring harness ends.

Front LH

Front RH

Rear LH

Rear RH

Sensor


Connector - terminal

E125 - 22 G

Wire color

E125 - 7

E125 - 24

R

B

E125 - 9

E125 - 11

E125 - 26

E125 - 13

E125 - 28

W

P

L

V

LG

Wheel sensor


E18 - 1

E18 - 2

E117 - 1

E117 - 2

B123 - 1

B123 - 2

B122 - 1

B122 - 2

L

V

W

P

R

B

G

Wire color

LG

Continuity

Yes

Continuity should exist.

OK or NG

OK

NG

>> Replace the ABS actuator and electric unit (control unit). Refer to BRC-86, "Removal and Installation" .


Engine System Inspection


1.

SELF-DIAGNOSIS RESULT CHECK

EFS0030A

Check self-diagnosis results.

Self-diagnosis results

ENGINE SIGNAL 1

ENGINE SIGNAL 2

ENGINE SIGNAL 3

ENGINE SIGNAL 4

ENGINE SIGNAL 6

Is the above displayed in the self-diagnosis display items?

Yes >> GO TO 2.

No >> INSPECTION END.

BRC-32


2.

ENGINE SYSTEM INSPECTION

1.

Perform ECM self-diagnosis and repair as necessary.

2.

Perform ABS actuator and electric unit (control unit) self-diagnosis again.

OK or NG

OK

NG

>> INSPECTION END.

>> Repair as necessary.

ABS Control Unit Inspection


1.




CONTROLLER FAILURE


Yes

>> Replace ABS actuator and electric unit. Refer to BRC-86, "Removal and Installation" .


Actuator Motor, Motor Relay, and Circuit Inspection


1.

CHECKING SELF-DIAGNOSIS RESULTS



CONSULT-II display items

PUMP MOTOR

Does “PUMP MOTOR” appear in self-diagnosis results display?

Yes >> GO TO 2.


2.


Disconnect the ABS actuator and electric unit connector E125.


OK or NG

OK

NG

>> GO TO 3.


[ABS]

A

B

EFS0030B

C

D

E

BRC

EFS0030C

G

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BRC-33


3.

CHECKING ABS MOTOR AND MOTOR RELAY POWER SYSTEM

1.

Disconnect ABS actuator and electric unit (control unit) connector.

2.

Check voltage between ABS actuator and electric unit (control unit) connector E125 and body ground.

ABS actuator and electric unit (control unit) connector E125

1 (R/B)

Body ground

—

Measured value

(Approx.)

12V

[ABS]

WFIA0106E

3.

Check resistance between ABS actuator and electric unit (control unit) connector E125 and ground.


30 (B)

Body ground

—

Measured value

(Approx.)

0

Ω

OK or NG

OK

NG

>> Perform self-diagnosis again. If the same result appears, replace ABS actuator and electric unit (control

unit). Refer to BRC-86, "Removal and Installation" .


Stop Lamp Switch System Inspection


1.



WFIA0107E

EFS0030E


STOP LAMP SW


Yes >> GO TO 2.


2.


1.

Turn off the ignition switch and disconnect the ABS actuator and electric unit connector E125 and stop lamp switch connector E38.

2.


OK or NG

OK

NG

>> GO TO 3.


BRC-34


[ABS]

3.

STOP LAMP SWITCH INSPECTION

Turn the ignition switch on and check the voltage between the ABS actuator and electric unit connector E125 terminal 17 (R/G) and ground.

17 (R/G) - Ground

Brake pedal depressed : Battery voltage

(approx. 12V)

Brake pedal not depressed : Approx. 0V

OK or NG

OK

NG

>> Connect the connectors and conduct ABS actuator and electric unit self-diagnosis.


ABS Control Unit Power and Ground Systems Inspection


1.



Signal name

Power supply

Ground

Ground

—

Measured value

Battery voltage (Approx. 12V)


WFIA0108E

EFS0030F


BATTERY VOLTAGE

Is the above displayed in the self-diagnosis item?

Yes >> GO TO 2.


2.


1.

Turn the ignition switch off and disconnect the ABS actuator and electric unit connector E125.

2.


OK or NG

OK

NG

>> GO TO 3.


3.

ABS CONTROL UNIT POWER AND GROUND CIRCUIT INSPECTION

1.

Disconnect ABS actuator and electric unit connector E125.

2.

Turn the ignition switch on.

3.

Measure the voltage and continuity between the ABS actuator and electric unit connector E125 and the ground.

ABS actuator and electric unit

(control unit) connector E125

29 (GR)

16 (B)

30 (B)

A

B

C

D

E

BRC

G

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M

OK or NG

OK

NG

>> Check the battery for loose terminals, low voltage, etc. Repair as necessary.


BRC-35


CAN Communication System Inspection


1.

PERFORM SELF-DIAGNOSIS

Perform ABS actuator and electric unit (control unit) self-diagnosis.

Is “CAN COMM CIRCUIT” displayed in the self-diagnosis display items?

Yes >> Print out the self-diagnosis results and go to 2.

No >> INSPECTION END.

2.


1.

Disconnect ABS actuator and electric unit connector E125.

2.


OK or NG

OK

NG

>> GO TO 3.


3.

CAN COMMUNICATION SYSTEM CHECK

Check the data monitor item “CAN Diagnosis Support Monitor”.

Normal

CAN COMM: OK

CAN CIRC 1: OK

CAN CIRC 2: OK

CAN CIRC 3: OK

CAN CIRC 4: UNKWN

CAN CIRC 5: OK


Error (example)

CAN COMM: OK







[ABS]

EFS0030G

>> After printing out the monitor items, go to CAN system. Refer to LAN-8, "CAN COMMUNICA-

TION" .

BRC-36

TROUBLE DIAGNOSES FOR SYMPTOMS


ABS Works Frequently

[ABS]

PFP:99999

EFS002ZO

A

1.

CHECK WARNING LAMP ACTIVATION

Make sure warning lamp remains off while driving.

OK or NG

OK

NG

>> GO TO 2.

>> Carry out self-diagnosis. Refer to

BRC-25, "SELF-DIAGNOSIS" .

2.

CHECK WHEEL SENSORS

B

C

D

Check the following.

●

Wheel sensor mounting for looseness

●

Wheel sensors for physical damage

● Wheel sensor connectors for terminal damage or loose connections

OK or NG

OK

NG

>> GO TO 3.


3.

CHECK FRONT AXLE

Check front and rear axles for excessive looseness. Refer to FAX-5, "FRONT WHEEL BEARING" or RAX-5,

"REAR WHEEL BEARING" .

OK or NG

OK

NG

>> GO TO 4.


4.

CHECK BRAKE FLUID PRESSURE

Check brake fluid pressure distribution.

Refer to BR-36, "Inspection" .

Is brake fluid pressure distribution normal?

Yes >> INSPECTION END.

No >> Perform Basic Inspection. Refer to

BRC-21, "Basic Inspection"

.

E

BRC

G

H

I

J

K

L

M

BRC-37


Unexpected Pedal Action

1.



OK or NG

OK

NG

>> GO TO 2.



2.

CHECK BRAKE PEDAL STROKE

Check brake pedal stroke.

Is pedal stroke excessive?

Yes >> Perform Basic Inspection. Refer to

BRC-21, "Basic

Inspection"

.

No >> GO TO 3.

[ABS]

EFS002ZP

SBR540A

3.

CHECK CONNECTOR AND BRAKING PERFORMANCE

1.


2.

Check brake effectiveness.

OK or NG

OK

NG

>> GO TO 4.

>> Perform Basic Inspection. Refer to BRC-21, "Basic Inspection" .

4.



● Wheel sensor mounting for looseness

●

●


Wheel sensor connectors for terminal damage or loose connections

OK or NG

OK

NG

>> Check ABS actuator and electric unit (control unit) pin terminals for damage and the connection of harness connector. Reconnect ABS actuator and electric unit (control unit) harness connector.

Then retest.


BRC-38


Long Stopping Distance

[ABS]

EFS002ZQ

A

1.

CHECK BASE BRAKING SYSTEM PERFORMANCE

1.

Disable ABS by disconnecting ABS actuator and electric unit (control unit) connector.

2.

Drive vehicle and check to see if stopping distance is still long.

OK or NG

OK

NG

>> Go to

BRC-37, "ABS Works Frequently" .

>> Perform Basic Inspection. Refer to


.

NOTE:

Stopping distance may be longer than vehicles without ABS when road condition is slippery.

ABS Does Not Work

CAUTION:

The ABS does not operate when the vehicle speed is 10 km/h (6 MPH) or less.

EFS002ZR

B

C

D

E

1.


Turn ignition switch ON and check for warning lamp activation.

● Warning lamp should activate for approximately 1 second after turning the ignition switch ON.

OK or NG

OK

NG



>> Go to

BRC-40, "ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On" .

Pedal Vibration or ABS Operation Noise

EFS002ZS

NOTE:

During ABS activation, pedal vibration may be felt and a noise may be heard. This is normal and does not indicate a malfunction.

BRC

G

H

I

J

1.

CHECK SYMPTOM

1.

Apply brake.

2.

Start engine.

Does the symptom occur only when engine is started?

Yes >> Carry out self-diagnosis. Refer to


No >> GO TO 2.

2.

RECHECK SYMPTOM

Does the symptom occur only when electrical equipment switches (such as headlamp) are turned on?

K

L

M

Yes >> Check for radio, antenna or related wiring that is routed too close to the ABS actuator and electric unit (control unit) and reroute as necessary.

No >> Go to


BRC-39


[ABS]

ABS Warning Lamp Does Not Come On When Ignition Switch Is Turned On

EFS002ZT

1.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) FUSES

Check 30A fusible link g and 30A fusible link h for ABS actuator and electric unit (control unit). For fusible link layout, refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" .

OK or NG

OK

NG

>> GO TO 2.

>> If fusible link is blown, be sure to eliminate cause of problem before replacing.

2.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUITS

1.


2.

Check voltage between ABS actuator connector terminal 1 and ground and terminal 15 and ground.

Does battery voltage exist?

Yes >> GO TO 3.

No >> Repair harness or connectors between fusible link and


3.

CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

Check continuity between ABS actuator connector terminal 16 and ground and terminal 30 and ground.

Does continuity exist?

Yes >> Replace ABS actuator and electric unit (control unit).

No >> Repair harness or connectors between ABS actuator and electric unit (control unit) and ground.

WFIA0115E

WFIA0098E

EFS002ZU

ABS Warning Lamp Stays On When Ignition Switch Is Turned On

1.

CARRY OUT SELF-DIAGNOSIS

Carry out self-diagnosis. Refer to


Are malfunctions detected in self-diagnosis?

Yes >> Refer to

BRC-26, "Display Item List"

.

No >> Refer to DI-45, "WARNING LAMPS" .

BRC-40

WHEEL SENSORS

WHEEL SENSORS

Removal and Installation

[ABS]

PFP:47910

EFS002QP

A

B

WFIA0102E

CAUTION:

Be careful not to damage sensor edge and sensor rotor teeth.

When removing the front or rear wheel hub assembly, first remove the ABS wheel sensor from the assembly.

Failure to do so may result in damage to the sensor wires making the sensor inoperative.

CAUTION:

Pull out the sensor being careful to turn it as little as possible. Do not pull on the sensor harness.

Installation should be performed while paying attention to the following, and then tighten fasteners to the specified torque.

●

Before installing wheel sensor, make sure no foreign materials (such as iron fragments) are adhered to the pick-up part of the sensor, to the inside of the sensor mounting hole or on the rotor mounting surface.

G

H

I

J

K

L

M

C

D

E

BRC

BRC-41

SENSOR ROTOR

[ABS]

SENSOR ROTOR


PFP:47970

EFS002QQ

NOTE:

The rear wheel sensor rotor is built into the rear wheel hub. For removal and installation procedure, refer to

RAX-6, "Removal and Installation" .

REMOVAL

1.

Remove the front wheel hub. Refer to FAX-6, "Removal and Installation" .

2.

Remove the sensor rotor using suitable puller.

LFIA0079E

INSTALLATION

Install the sensor rotor using a hammer and a wooden block.

● Always replace sensor rotor with new one.

LFIA0083E

BRC-42

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)



I

J

WFIA0104E

REMOVAL

1.

Disconnect battery cable.

2.

Remove windshield wiper and linkage assembly. Refer to WW-29, "REMOVAL" .

3.

Drain brake fluid. Refer to BR-8, "Changing Brake Fluid" .

4.

Discharge the A/C refrigerant. Refer to ATC-116, "HFC-134a (R-134a) Service Procedure" .

5.

Disconnect and remove high-pressure and low-pressure A/C pipes to allow access to ABS actuator and electric unit (control unit). Refer to ATC-118, "Components" .

6.

Disconnect harness connectors from ABS actuator and electric unit (control unit).

7.

Disconnect brake pipes.

8.

Remove fasteners for ABS actuator and electric unit (control unit) and remove from vehicle.

INSTALLATION

CAUTION:

After installation of ABS actuator and electric unit (control unit), refill brake fluid. Then bleed air from system. Refer to BR-8, "Bleeding Brake System" .

1.

Position ABS actuator and electric unit (control unit) in vehicle.

2.

Connect brake pipes and fasteners temporarily.

3.

Tighten fasteners and brake pipes.

4.

Connect ABS actuator and electric unit (control unit) harness connectors.

5.

Install and connect high-pressure and low-pressure A/C pipes. Refer to ATC-118, "Components" .

6.

Install windshield wiper and linkage assembly. Refer to WW-30, "INSTALLATION" .

K

L

M

BRC-43

[ABS]

PFP:47660

EFS002QR

A

B

BRC

G

H

C

D

E


[ABS]

7.

Reconnect battery cable.

8.

Evacuate and recharge the A/C system. Refer to ATC-116, "HFC-134a (R-134a) Service Procedure" .

BRC-44

PRECAUTIONS

[TCS/ABS]

PRECAUTIONS

PFP:00001



EFS002V9


WARNING:


●

●






EFS002VA

CAUTION:

●


●


●

●

●

●

●






●

●





Refer to BR-28, "Brake Burnishing" (front disc brakes) or BR-35, "Brake Burnishing" (rear disc brakes).

WARNING:


A

B

C

D

E

BRC

G

H

I

J

K

L

M


EFS0031P


CAUTION:



1.


●

●

If YES, GO TO 2.

If NO, GO TO 5.

BRC-45

PRECAUTIONS

[TCS/ABS]

2.


●

●

If YES, GO TO 3.

If NO, GO TO 4.

3.


4.


5.



●

●

●

●

●

●

●

EFS002VB









●

●

●

●






EFS002VC

PKIA0306E

●


PKIA0307E

BRC-46

PRECAUTIONS



●


● PG-3, "POWER SUPPLY ROUTING CIRCUIT"


●

●



[TCS/ABS]

EFS002VD

A

B

BRC

G

H

C

D

E

K

L

I

J

M

BRC-47

PREPARATION

[TCS/ABS]

PREPARATION



PFP:00002

EFS002VM

Tool number

(Kent-Moore No.)

Tool name

Description

(J-45741)



WFIA0101E


Tool name


a: 10mm (0.39 in)/12mm (0.47 in)

2. Torque wrench

Description


EFS002VN

S-NT360

BRC-48



System Diagram

[TCS/ABS]

PFP:00000

EFS002VO

A

B

C

D

E

BRC

WFIA0118E

●

●

ABS Function

●

●

●

●

EFS002VP







EBD Function

●

●

●

●

●

●

EFS002VQ







TCS Function

●

EFS002VR

Spinning of the drive wheels is detected by the ABS/TCS control unit using inputs from the wheel speed sensors. If wheel spin occurs, the drive wheel right and left brake fluid pressure control and engine fuel cut are conducted while the throttle value is restricted to reduce the engine torque and decrease the amount of wheel spin. In addition, the throttle opening is controlled to achieve the optimum engine torque.

G

H

I

J

K

L

M

BRC-49

●

●

●


[TCS/ABS]

Depending on road condition, the vehicle may have a sluggish feel. This is normal, because optimum traction has the highest priority during TCS operation.

TCS may be activated during sudden vehicle acceleration, wide open throttle acceleration, sudden transmission shifts or when the vehicle is driven on a road with a varying surface friction coefficient.

The SLIP indicator lamp flashes to inform the driver of TCS operation.

Wheel Sensors

EFS002VY

The front sensor units consist of a gear-shaped sensor rotor and a sensor element. the element contains a magnet around which a coil is wound. The front wheel sensors are installed on the front of the wheel knuckles. As the wheel rotates, the sensor generates a square-wave signal. The frequency increases as the wheel speed increases.

LBR333


WFIA0033E


CAUTION:

If the Fail-Safe function is activated, perform the Self Diagnosis for ABS/TCS system.

EFS002VT

ABS/EBD SYSTEM

In case of an electrical malfunction with the ABS, the ABS warning lamp and SLIP indicator lamp will turn on.

In case of an electrical malfunction with the EBD system, the BRAKE warning lamp, ABS warning lamp and

SLIP indicator lamp will turn on.


1.

For ABS malfunction, only the EBD is operative and the condition of the vehicle is the same condition of vehicles without ABS/TCS system.

2.

For EBD malfunction, the EBD and ABS become inoperative, and the condition of the vehicle is the same as the condition of vehicles without ABS/TCS or EBD system.

TCS SYSTEM

In case of TCS system malfunction, the SLIP indicator lamp is turned on and the condition of the vehicle is the same as the condition of vehicles without TCS system. In case of an electrical malfunction with the TCS system, the ABS control continues to operate normally without TCS control.

BRC-50



[TCS/ABS]

EFS002VU

A

B

PFIA0422E

BRC

G

H

C

D

E

K

L

I

J

M

BRC-51


[TCS/ABS]



PFP:23710

EFS00314




BRC-52




INTRODUCTION

The ABS/TCS system has an electronic control unit to control major functions. The control unit accepts input signals from sensors and controls actuator operation. It is also important to check for conventional problems such as air leaks in the booster or lines, lack of brake fluid, or other problems with the brake system.



Before undertaking actual checks, take just a few minutes to talk with a customer who approaches with an ABS/TCS complaint. The customer is a very good source of information on such problems, especially intermittent ones. Through the talks with the customer, find out what symptoms are present and under what conditions they occur.



ABS/TCS equipped vehicle. Also check related Service Bulletins for information.

[TCS/ABS]

PFP:00000

EFS002YA

A

B

SEF233G

C

D

E

BRC

G

H

SEF234G

I

J

K

L

M

BRC-53

WORK FLOW


[TCS/ABS]

BRC-54

WFIA0130E


CLARIFY CONCERN

●

●





[TCS/ABS]

C

SBR339B

D

E

A

B

K

L

I

J

M

BRC

G

H

WFIA0097E

BRC-55



[TCS/ABS]

EFS002YB

BRC-56

WFIA0117E

Schematic


[TCS/ABS]

EFS002YC

A

B

BRC

G

H

C

D

E

K

L

I

J

M

WFWA0022E

BRC-57

Wiring Diagram — TCS —


[TCS/ABS]

EFS002YD

BRC-58

WFWA0023E


[TCS/ABS]

K

L

I

J

M

BRC

G

H

C

D

E

A

B

WFWA0064E

BRC-59


[TCS/ABS]

BRC-60

WFWA0025E


[TCS/ABS]

K

L

I

J

M

BRC

G

H

C

D

E

A

B

WFWA0026E

BRC-61


[TCS/ABS]



1.


EFS002YE

2.



●

●



CAUTION:


3.




ABS WARNING LAMP AND SLIP INDICATOR LAMP INSPECTION

1.

Make sure ABS warning lamp and SLIP indicator lamp turn on for approximately 1 second when the ignition switch is turned ON. Check CAN communications. If there are no errors with the CAN communication system, check combination meter. Refer to DI-5, "COMBINATION METERS" .

2.

Make sure the lamps turn off approximately 1 second after the ignition switch is turned ON. If the lamp does not turn off, conduct self-diagnosis.

3.

Make sure ABS warning lamp and SLIP indicator lamp turn off approximately 2 seconds after the engine is started. If ABS warning lamp and SLIP indicator lamp have not turned off 10 seconds after the engine has been started, conduct self-diagnosis of the ABS actuator and electric unit (control unit).

4.


BRC-65, "CONSULT-II

Function" .


EFS002YF

×

: ON – : Lamp OFF

Condition

ABS warning lamp

–

TCS OFF indicator lamp

–

SLIP indicator lamp

–

Remarks

– When the ignition switch is OFF

After the ignition switch is turned

ON


Ignition switch ON


When the TCS OFF switch turns

ON (TCS function OFF).

×

–

–

×

–

×

×

–

–

–


–

× × ×

TCS/ABS malfunction

When the TCS is malfunctioning.

×

–

×

×

–

×

–

When the TCS/ABS control unit is malfunctioning (power supply or ground malfunction).

–

BRC-62


[TCS/ABS]



EFS002YG

CAUTION:


Monitor item

SLCT LVR POSI

GEAR

FR RH SENSOR

FR LH SENSOR

RR RH SENSOR

RR LH SENSOR

ACCEL POS SIG

ENGINE SPEED·

PRESS SENSOR

BATTERY VOLT

STOP LAMP SW

ABS WARN LAMP

MOTOR RELAY

ACTUATOR RLY

Display content


OFF condition

A/T gear position

Wheel speed


With engine running

Brake fluid pressure detected by pressure sensor

Data monitor

Condition




N and P positions

1:1st gear

2:2nd gear

3:3rd gear

4:4th gear

Vehicle stopped

ON

OFF


0 [km/h (MPH)]


(within

±

10%)


ON)



With engine stopped

0%

0 to 100%

Engine running

0 rpm


With ignition switch turned ON and brake pedal released

With ignition switch turned ON and brake pedal depressed

Approx. 0 bar

–0 to 350 bar





System Inspection"


BRC-74, "Engine System

Inspection"

—




Ignition switch ON

Brake pedal depressed

Brake pedal not depressed

ABS warning lamp ON


10 to 16V

ON

OFF

ON

OFF

BRC-77, "ABS/TCS Control Unit Power and

Ground Systems Inspection"

BRC-76, "Stop Lamp



Lamp Does Not Come


Is Turned On"







OFF

ON

OFF

ON



Inspection"



Inspection"

A

B

C

D

E

BRC

G

H

I

J

K

L

M

BRC-63


[TCS/ABS]

Data monitor


Condition



SLIP LAMP

FR LH IN SOL

FR LH OUT SOL

FR RH IN SOL

FR RH OUT SOL

RR RH IN SOL

RR RH OUT SOL

RR LH IN SOL

RR LH OUT SOL

SLIP indicator lamp status (Note 4)


When SLIP indicator lamp is

ON


OFF





ON

OFF

ON

OFF

DI-9, "Combination

Meter"

—

FLUID LEV SW



ON


OFF

ON

OFF

DI-45, "WARNING

LAMPS"

TCS FAIL SIG

ABS FAIL SIG

EBD FAIL SIG

Fail signal status

TCS fail

ABS fail

EBD fail

OFF

TCS system

ABS system

EBD system




OFF: Approximately 1.8 seconds after ignition switch is turned ON (when system is in normal operation) and TCS function is not activated.

Note 4: SLIP indicator lamp ON/OFF timing

ON: For approximately 1.8 seconds after ignition switch is turned ON, or when a malfunction is detected and TCS function is activated while driving.

OFF: Approximately 1.8 seconds after ignition switch is turned ON (when system is in normal operation) and TCS function is not activated.

Flashing: TCS function is active during driving

BRC-64


[TCS/ABS]


EFS002YH

CAUTION:

●

When the self-diagnosis, data monitor, or active test functions are being executed, EBD, ABS and

TCS control is disabled.

●

●

●

When using CONSULT-II to conduct ABS/TCS control unit self-diagnosis, active test, work support, etc., first stop engine, connect the CONSULT-II, and select “ABS”.




Wheel sensors

Stop lamp switch

Solenoid valves

Pressure sensor

Actuator relay

Item

Motor relay

ABS warning lamp

Battery voltage


ABS/TCS actuator motor

CAN communication

Engine speed signal

SLIP indicator lamp

Throttle angle

Gear


EBD/ABS/TCS signals


×

: Applicable

–: Not applicable

Self-diagnosis

×

×

×

×

×

×

–

×

×

–

–

×

×

×

–

–

×

×

Data monitor

×

×

×

×

×

×

×

×

–

×

–

×

×

×

×

×

×

×

Active test

–

–

×

×

–

×

–

–

–

–

–

–

–

–

–

×

–

–

A

B

C

D

E

BRC

G

H

I

J

K

L

M


1.


2.


CAUTION:



3.


BBIA0002E

BRC-65


4.


[TCS/ABS]

SKIA3098E

5.




PKIA2102E

6.



SELF-DIAGNOSIS

Description



1.


2.


CAUTION:


3.


4.


5.



CAUTION:


6.


●

When “NO FAILURE” is displayed, check the ABS warning lamp and SLIP indicator lamp.

7.


8.


CAUTION:

●


9.


BRC-66


[TCS/ABS]




CAUTION:


11. For the final inspection, drive at approximately 30 km/h (19 MPH) for approximately 1 minute and confirm that the ABS warning lamp and SLIP indicator lamp are off.



FR LH SENSOR 1

[C1104]

RR RH SENSOR 1

[C1101

FR RH SENSOR 1

[C1103]

RR LH SENSOR 1

[C1102]






Check system

FR LH SENSOR 2

[C1108]

RR RH SENSOR 2

[C1105]

FR RH SENSOR 2

[C1107]

RR LH SENSOR 2

[C1106]






System Inspection"

(Note 1)

STOP LAMP SW 1

[C1116]


BRC-76, "Stop Lamp


FR LH IN ABS SOL

[C1120]

FR LH OUT ABS SOL

[C1121]

RR RH IN ABS SOL

[C1126]

RR RH OUT ABS SOL

[C1127]

FR RH IN ABS SOL

[C1122]

FR RH OUT ABS SOL

[C1123]

RR LH IN ABS SOL

[C1124]

RR LH OUT ABS SOL

[C1125]









—

A

B

C

D

E

BRC

G

H

I

J

K

L

M

BRC-67


[TCS/ABS]


PUMP MOTOR (Note 3)

[C1111]

BATTERY VOLTAGE

[ABNORMAL]

[C1109]

CONTROLLER FAILURE

[C1110]

CAN COMM CIRCUIT

[U1000]

BR FLUID LEVEL LOW

[C1155]

ENGINE SPEED SIG

ENGINE SIGNAL 1

[C1130]




Check system

BRC-75, "Actuator


Circuit Inspection"







BRC-77, "ABS/TCS

Control Unit Power and

Ground Systems Inspection"

BRC-75, "ABS/TCS

Control Unit Inspection"


(Note 2)

DI-45, "WARNING

LAMPS"


ECM judges the communication between ABS/TCS control unit and ECM is abnormal.




EC-567, "DTC P1572

ASCD BRAKE SWITCH"

STOP LAMP SW 2

[C1176]





DATA MONITOR


1.


CAUTION:


2.



CAUTION:


3.



4.


BRC-68


Item

(Unit)

GEAR

FR RH SENSOR

(km/h, MPH)

FR LH SENSOR

(km/h, MPH)

RR RH SENSOR

(km/h, MPH)

RR LH SENSOR

(km/h, MPH)

BATTERY VOLT

(V)

SLCT LVR POSI

ACCEL POS SIG

(%)

ENGINE SPEED

(rpm)

PRESS SENSOR

(bar)

STOP LAMP SW

(ON/OFF)

ABS WARN LAMP

(ON/OFF)

SLIP LAMP

(ON/OFF)

FR LH IN SOL

(ON/OFF)

FR LH OUT SOL

(ON/OFF)

RR RH IN SOL

(ON/OFF)

RR RH OUT SOL

(ON/OFF)

FR RH IN SOL

(ON/OFF)

FR RH OUT SOL

(ON/OFF)

RR LH IN SOL

(ON/OFF)

RR LH OUT SOL

(ON/OFF)


[TCS/ABS]

ECU INPUT

SIGNALS

×


MAIN

SIGNALS

SELECTION

FROM

MENU

× ×

×

×

×

×

×

×

×

×

×

×

–

–

–

–

–

–

–

–

–

–

×

×

×

×

×

×

–

×

–

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

CAN DIAG

SUPPORT

MNTR

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Remarks










Brake fluid pressure detected by pressure sensor is displayed.



SLIP indicator lamp (ON/


















A

B

C

D

E

BRC

G

H

I

J

K

L

M

BRC-69


[TCS/ABS]

Item

(Unit)

ECU INPUT

SIGNALS


MAIN

SIGNALS

SELECTION

FROM

MENU

CAN DIAG

SUPPORT

MNTR

Remarks

OFF LAMP

(ON/OFF)

MOTOR RELAY

(ON/OFF)

ACTUATOR RLY

(ON/OFF)

TCS FAIL SIG

(ON/OFF)

ABS FAIL SIG

(ON/OFF)

EBD FAIL SIG

(ON/OFF)

FLUID LEV SW

(ON/OFF)

EBD SIGNAL

(ON/OFF)

ABS SIGNAL

(ON/OFF)

TCS SIGNAL

(ON/OFF)

CAN COMM

(OK/NG)

CAN CIRC 1

(OK/UNKWN)

CAN CIRC 2

(OK/UNKWN)

CAN CIRC 3

(OK/UNKWN)

CAN CIRC 4

(OK/UNKWN)

CAN CIRC 5

(OK/UNKWN)

CAN CIRC 6

(OK/UNKWN)

CAN CIRC 7

(OK/UNKWN)

CAN CIRC CLC

(OK/UNKWN)

–

–

–

–

–

–

×

–

–

–

–

–

–

–

–

–

–

–

–

×

×

×

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

×

×

×

×

×

×

×

×

×

×

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

×

×

×

×

×

×

×

×

×

OFF Lamp (ON/OFF) status is displayed.





TCS fail signal (ON/OFF) status is displayed.







TCS operation (ON/OFF) status is displayed.





TRQ MAP S/C – –

×

–

TRQ MAP N/A

×

: Applicable

–: Not applicable

– –

×

–

ACTIVE TEST

CAUTION:

●

Do not perform active test while driving.

●

●





BRC-70


[TCS/ABS]


1.


CAUTION:


2.


3.

Touch “ABS”.


4.


5.


6.


A

B

C

D

E

BRC

LBR379

7.


8.



ABS solenoid valve

Operation

FR RH SOL

FR RH ABS SOLE-

NOID (ACT)

FR LH SOL

FR LH ABS SOLE-

NOID (ACT)

RR RH SOL

RR RH ABS SOLE-

NOID (ACT)

FR RH IN SOL

FR RH OUT SOL

FR LH IN SOL

FR LH OUT SOL

RR RH IN SOL

RR RH OUT SOL

RR LH SOL

RR LH ABS SOLE-

NOID (ACT)

RR LH IN SOL

RR LH OUT SOL

RR RH IN SOL

RR RH OUT SOL

REAR SOL

RR LH IN SOL

RR LH OUT SOL


UP

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

KEEP

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

DOWN

ON

ON*

ON

ON*

ON

ON*

ON

ON*

ON

ON*

ON

ON*

UP


ACTUA-

TOR UP

ACTUA-

TOR KEEP

OFF OFF OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

NOTE:

●


●

●



OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

G

H

I

J

K

L

M

BRC-71


ABS Motor


Operation

ABS actuator relay

ABS motor relay

ON

ON

ON

OFF

ON

OFF

NOTE:

● If active test is performed with brake pedal depressed, pedal stroke may change. This is normal.

●


[TCS/ABS]

SFIA0593E

BRC-72


[TCS/ABS]




1.


PFP:00000

EFS002ZW

A

B



OK or NG

OK

NG

>> GO TO 2.


2.


C

D

1.


2.


3.


NOTE:


4.


NOTE:



Yes >> GO TO 3.

No >> GO TO 6.

E

BRC

G

H

I

3.

CHECK TIRES

J



Yes >> GO TO 4.


4.


K

L


BEARING" .

OK or NG

OK

NG

>> GO TO 5.


BEARING" .

5.



OK or NG

OK

NG

>> GO TO 6.



.

M

BRC-73


[TCS/ABS]

6.


1.


2.



OK or NG

OK

NG

>> GO TO 7.


WFIA0105E

7.


1.


2.


Front LH

Front RH

Rear LH

Rear RH

Sensor



E125 - 22 G

Wire color

E125 - 7

E125 - 24

R

B

E125 - 9

E125 - 11

E125 - 26

E125 - 13

E125 - 28

W

P

L

V

LG

Wheel sensor


E18 - 1

E18 - 2

E117 - 1

E117 - 2

B123 - 1

B123 - 2

B122 - 1

B122 - 2

L

V

W

P

R

B

G

Wire color

LG

Continuity

Yes


OK or NG

OK

NG





1.


EFS002ZX



ENGINE SIGNAL 1

ENGINE SIGNAL 2

ENGINE SIGNAL 3

ENGINE SIGNAL 4

ENGINE SIGNAL 6


Yes >> GO TO 2.


BRC-74


[TCS/ABS]

2.


1.


2.


OK or NG

OK

NG



ABS/TCS Control Unit Inspection


1.




CONTROLLER FAILURE


Yes





1.





PUMP MOTOR


Yes >> GO TO 2.


2.




OK or NG

OK

NG

>> GO TO 3.


EFS002ZY

EFS00302

A

B

C

D

E

BRC

G

H

I

J

K

L

M

BRC-75


[TCS/ABS]

3.


1.


2.



1 (R/B)

Body ground

—

Measured value

(Approx.)

12V

WFIA0106E

3.



30 (B)

Body ground

—

Measured value

(Approx.)

0

Ω

OK or NG

OK

NG






1.



WFIA0107E


STOP LAMP SW


Yes >> GO TO 2.


2.


1.

Disconnect the ABS actuator and electric unit connector E125 and stop lamp switch connector E38.

2.


OK or NG

OK

NG

>> GO TO 3.


EFS00304

BRC-76


[TCS/ABS]

3.


Turn the ignition switch on and check the voltage between the ABS actuator and electric unit connector E125 terminal 17 (R/G) and ground.

17 (R/G) - Ground


(approx. 12V)


OK or NG

OK

NG



ABS/TCS Control Unit Power and Ground Systems Inspection


1.



WFIA0108E

EFS00305


BATTERY VOLTAGE


Yes >> GO TO 2.


2.


1.


2.


OK or NG

OK

NG

>> GO TO 3.


3.

ABS/TCS CONTROL UNIT POWER AND GROUND CIRCUIT INSPECTION


A

B

C

D

E

BRC

G

H

I

J

K

L

M

Signal name

Power supply

Ground



29 (GR)

16 (B)

30 (B)

Ground

—

Measured value



OK or NG

OK

NG



BRC-77


[TCS/ABS]



1.






2.


1.


2.


OK or NG

OK

NG

>> GO TO 3.


3.



Normal

CAN COMM: OK

CAN CIRC 1: OK

CAN CIRC 2: OK

CAN CIRC 3: OK


CAN CIRC 5: OK


Error (example)

CAN COMM: OK







EFS00307


TION" .

BRC-78




[TCS/ABS]

PFP:99999

EFS002YV

A

1.



OK or NG

OK

NG

>> GO TO 2.



2.


B

C

D


●


●



OK or NG

OK

NG

>> GO TO 3.


3.




OK or NG

OK

NG

>> GO TO 4.


4.






No >> Perform Basic Inspection. Refer to


.

E

BRC

G

H

I

J

K

L

M

BRC-79



1.



OK or NG

OK

NG

>> GO TO 2.



2.




Yes >> Perform Basic Inspection. Refer to

BRC-62, "Basic

Inspection"

.

No >> GO TO 3.

[TCS/ABS]

EFS002YW

SBR540A

3.


1.


2.


OK or NG

OK

NG

>> GO TO 4.


4.




●

●



OK or NG

OK

NG


Then retest.


BRC-80



[TCS/ABS]

EFS002YX

A

1.


1.


2.


OK or NG

OK

NG

>> Go to




.

NOTE:



CAUTION:


EFS002YY

B

C

D

E

1.




OK or NG

OK

NG



>> Go to



EFS002YZ

NOTE:


BRC

G

H

I

J

1.

CHECK SYMPTOM

1.

Apply brake.

2.

Start engine.




No >> GO TO 2.

2.

RECHECK SYMPTOM


K

L

M


No >> Go to


BRC-81


[TCS/ABS]


EFS002Z0

1.


Check 30A fusible link g and 30A fusible link h for ABS actuator and electric unit (control unit). For fusible link layout, refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" .

OK or NG

OK

NG

>> GO TO 2.


2.


1.


2.



Yes >> GO TO 3.



3.






WFIA0115E

WFIA0098E

EFS002Z1


1.


Carry out self-diagnosis. Refer to



Yes >> Refer to

BRC-69, "Display Item List"

.


BRC-82


[TCS/ABS]

Vehicle Jerks During TCS Activation

EFS002Z2

A

1.

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS


Are self-diagnosis result items displayed?

Yes >> After checking and repairing the applicable item, perform the ABS actuator and electric unit (control unit) self-diagnosis again.

No >> GO TO 2.

2.

ENGINE SPEED SIGNAL INSPECTION

Perform data monitor with CONSULT-II for the ABS actuator and electric unit (control unit).

Is the engine speed at idle 400 rpm or higher?

Yes >> GO TO 4.

No >> GO TO 3.

3.

ECM SELF-DIAGNOSIS

B

C

D

E

BRC

Perform ECM self-diagnosis.


Yes >> After checking and repairing the applicable item, perform the ECM self-diagnosis again.

No >> GO TO 4.

4.

TCM SELF-DIAGNOSIS

Perform TCM self-diagnosis.



No >> GO TO 5.

5.


Disconnect the ABS actuator and electric unit (control unit) connector and the ECM connectors and check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

NG

>> GO TO 6.

>> Repair or replace the connector terminal.

6.

CAN COMMUNICATION INSPECTION

Check the CAN communication system. Refer to


.

OK or NG

OK

NG

>> INSPECTION END.

>> Reconnect the connectors, and perform ABS actuator and electric unit (control unit) self-diagnosis.

G

H

I

J

K

L

M

BRC-83

WHEEL SENSORS


WHEEL SENSORS

[TCS/ABS]

PFP:47910

EFS002W3

WFIA0102E

CAUTION:




CAUTION:



●


BRC-84

SENSOR ROTOR

[TCS/ABS]

SENSOR ROTOR


PFP:47970

EFS002W4

NOTE:



REMOVAL

1.


2.


A

B

C

D

E

INSTALLATION



LFIA0079E

BRC

G

H

LFIA0083E

K

L

I

J

M

BRC-85




[TCS/ABS]

PFP:47660

EFS002W9

WFIA0104E

REMOVAL

1.


2.


3.


4.


5.


6.


7.


8.


INSTALLATION

CAUTION:


1.


2.


3.


4.


5.


6.


BRC-86


[TCS/ABS]

7.


8.


A

B

BRC

G

H

C

D

E

K

L

I

J

M

BRC-87

PRECAUTIONS

[VDC/TCS/ABS]

PRECAUTIONS

PFP:00001



EFS002V3


WARNING:


●

●






EFS002V4

CAUTION:

●


●


●

●

●

●

●






●

●





Refer to BR-28, "Brake Burnishing" (front disc brake) or BR-35, "Brake Burnishing" (rear disc brake).

WARNING:



EFS0031Q


CAUTION:



1.


●

●

If YES, GO TO 2.

If NO, GO TO 5.

BRC-88

PRECAUTIONS

[VDC/TCS/ABS]

2.


●

●

If YES, GO TO 3.

If NO, GO TO 4.

3.


4.


5.


A

B

C


●

●

●

●

●

●

●

●

●

●

●

●

EFS002V5








If the following components are replaced with non-genuine components or modified, the VDC OFF indicator lamp and SLIP indicator lamp may turn on or the VDC system may not operate properly. Components related to suspension (shock absorbers, struts, springs, bushings, etc.), tires, wheels (exclude specified size), components related to brake system (pads, rotors, calipers, etc.), components related to engine

(muffler, ECM, etc.), components related to body reinforcement (roll bar, tower bar, etc.).

Driving with broken or excessively worn suspension components, tires or brake system components may cause the VDC OFF indicator lamp and the SLIP indicator lamp to turn on, and the VDC system may not operate properly.

When the TCS or VDC is activated by sudden acceleration or sudden turn, some noise may occur. The noise is a result of the normal operation of the TCS and VDC.

When driving on roads which have extreme slopes (such as mountainous roads) or high banks (such as sharp curves on a freeway), the VDC may not operate normally, or the VDC warning lamp and the SLIP indicator lamp may turn on. This is not a problem if normal operation can be resumed after restarting the engine.

Sudden turns (such as spin turns, acceleration turns), drifting, etc. with VDC turned off may cause the yaw rate/side G sensor to indicate a problem. This is not a problem if normal operation can be resumed after restarting the engine.


●

●

●




EFS002V6

D

E

BRC

G

H

I

J

K

L

M

BRC-89

PRECAUTIONS

●



[VDC/TCS/ABS]

PKIA0306E

●


PKIA0307E

EFS002V7



●


●

●

PG-3, "POWER SUPPLY ROUTING CIRCUIT"


●



BRC-90

PREPARATION

[VDC/TCS/ABS]

PREPARATION



PFP:00002

EFS002V8

Tool number

(Kent-Moore No.)

Tool name

Description

A

B

C

(J-45741)



D

WFIA0101E


Tool name Description

EFS002TE

E

BRC


a: 10mm (0.39 in)/12mm (0.47 in)

2. Torque wrench


G

H

S-NT360

I

J

K

L

M

BRC-91


System Components


[VDC/TCS/ABS]

PFP:00000

EFS002VE

PFIA0463E

ABS Function

●

●

●

●

●

●

EFS002TL







EBD Function

●

●

●

●

●

EFS002TM






BRC-92

●


[VDC/TCS/ABS]


A

TCS Function

●

●

●

●

EFS002TK

Spinning of the drive wheels is detected by the ABS/TCS/VDC control unit using inputs from the wheel speed sensors. If wheel spin occurs, the drive wheel right and left brake fluid pressure control and engine fuel cut are conducted while the throttle value is restricted to reduce the engine torque and decrease the amount of wheel spin. In addition, the throttle opening is controlled to achieve the optimum engine torque.

Depending on road condition, the vehicle may have a sluggish feel. This is normal, because optimum traction has the highest priority during TCS operation.

TCS may be activated during sudden vehicle acceleration, wide open throttle acceleration, sudden transmission shifts or when the vehicle is driven on a road with a varying surface friction coefficient.

The SLIP indicator lamp flashes to inform the driver of TCS operation.

VDC Function

●

●

●

●

EFS002TJ

In addition to the ABS/TCS function, the driver steering amount and brake operation amount are detected from the steering angle sensor and pressure sensor, and the vehicle's driving status (amount of under steering/over steering) is determined using inputs from the yaw rate sensor/side G sensor, wheel speed sensors, etc. and this information is used to improve vehicle stability by controlling the braking and engine torque application to the wheels.

The SLIP indicator lamp flashes to inform the driver of VDC operation.

During VDC operation, the vehicle body and brake pedal may vibrate lightly and a mechanical noise may be heard. This is normal.

The ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp may turn on when the vehicle is subject to strong shaking or large vibration, such as when the vehicle is on a turn table or a ship while the engine is running or steep slope. In this case, restart the engine on a normal road and if the ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp turn off, there is no problem.

B

C

D

E

BRC

G

H

I

J

K

L

M

BRC-93


Wheel Sensors

The front sensor units consist of a gear-shaped sensor rotor and a sensor element. The element contains a magnet around which a coil is wound. The front wheel sensors are installed on the front of the wheel knuckles. As the wheel rotates, the sensor generates a square-wave signal. The frequency increases as the wheel speed increases.

[VDC/TCS/ABS]

EFS002VZ

LBR333


WFIA0033E


ABS/EBD SYSTEM

EFS002TN

In case of an electrical malfunction with the ABS, the ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp will turn on. In case of an electrical malfunction with the EBD system, the BRAKE warning lamp, ABS warning lamp, VDC OFF indicator lamp and SLIP indicator lamp will turn on.


1.

For ABS malfunction, only the EBD is operative and the condition of the vehicle is the same condition of vehicles without ABS/TCS/VDC system.

2.

For EBD malfunction, the EBD and ABS become inoperative, and the condition of the vehicle is the same as the condition of vehicles without ABS/TCS/VDC or EBD system.

VDC/TCS SYSTEM

In case of TCS/VDC system malfunction, the VDC OFF indicator lamp and SLIP indicator lamp are turned on and the condition of the vehicle is the same as the condition of vehicles without TCS/VDC system. In case of an electrical malfunction with the TCS/VDC system, the ABS control continues to operate normally without

TCS/VDC control.

CAUTION:

If the Fail-Safe function is activated, perform the Self Diagnosis for ABS/TCS/VDC system.

BRC-94



[VDC/TCS/ABS]

EFS002TO

A

B

PFIA0452E

BRC

G

H

C

D

E

K

L

I

J

M

BRC-95


[VDC/TCS/ABS]



PFP:23710

EFS00315




BRC-96


[VDC/TCS/ABS]



INTRODUCTION

The ABS/TCS/VDC system has an electronic control unit to control major functions. The control unit accepts input signals from sensors and controls actuator operation. It is also important to check for conventional problems such as air leaks in the booster or lines, lack of brake fluid, or other problems with the brake system.



Before undertaking actual checks, take just a few minutes to talk with a customer who approaches with an ABS/TCS/VDC complaint. The customer is a very good source of information on such problems, especially intermittent ones. Through the talks with the customer, find out what symptoms are present and under what conditions they occur.



ABS/TCS/VDC equipped vehicle. Also check related Service Bulletins for information.

PFP:00000

EFS002XX

SEF233G

A

B

C

D

E

BRC

G

H

SEF234G

I

J

K

L

M

BRC-97

WORK FLOW


[VDC/TCS/ABS]

BRC-98

PFIA0464E


CLARIFY CONCERN

●

●





[VDC/TCS/ABS]

C

SBR339B

D

E

A

B

K

L

I

J

M

BRC

G

H

WFIA0097E

BRC-99



[VDC/TCS/ABS]

EFS002XY

BRC-100

WFIA0100E

Schematic


[VDC/TCS/ABS]

EFS002XZ

A

B

BRC

G

H

C

D

E

K

L

I

J

M

WFWA0027E

BRC-101

Wiring Diagram — VDC —


[VDC/TCS/ABS]

EFS002Y0

BRC-102

WFWA0028E


[VDC/TCS/ABS]

K

L

I

J

M

BRC

G

H

C

D

E

A

B

WFWA0029E

BRC-103


[VDC/TCS/ABS]

BRC-104

WFWA0030E


[VDC/TCS/ABS]

K

L

I

J

M

BRC

G

H

C

D

E

A

B

WFWA0031E

BRC-105


[VDC/TCS/ABS]

BRC-106

WFWA0032E


[VDC/TCS/ABS]

K

L

I

J

M

BRC

G

H

C

D

E

A

B

WFWA0033E

BRC-107


[VDC/TCS/ABS]



1.


EFS002Y1

2.



●

●



CAUTION:


3.




ABS WARNING LAMP, SLIP INDICATOR LAMP AND VDC OFF INDICATOR LAMP INSPECTION

1.

Make sure ABS warning lamp, SLIP indicator lamp and VDC OFF indicator lamp (when VDC OFF switch is off), turn on for approximately 1 second when the ignition switch is turned ON. If they do not, check the

VDC OFF indicator lamp and then VDC OFF switch. Refer to

BRC-131, "VDC OFF SWITCH"

. Check

CAN communications. If there are no errors with VDC OFF switch and CAN communication system, check combination meter. Refer to DI-5, "COMBINATION METERS" .

2.

Make sure the lamps turn off approximately 1 second after the ignition switch is turned ON. If the lamp does not turn off, conduct self-diagnosis.

3.

With the engine running, make sure VDC OFF indicator lamp turns on and off when VDC OFF switch is turned on and off. If the indicator lamp status does not correspond to switch operation, check the VDC

OFF switch system. Refer to

BRC-131, "VDC OFF SWITCH"

.

4.

Make sure ABS warning lamp, SLIP indicator lamp and VDC OFF indicator lamp turn off approximately 2 seconds after the engine is started. If ABS warning lamp, SLIP indicator lamp or VDC OFF indicator lamp have not turned off 10 seconds after the engine has been started, conduct self-diagnosis of the ABS actuator and electric unit (control unit).

5.


BRC-112, "CONSULT-II

Function" .


EFS002Y7

×

: ON – : Lamp OFF

Condition

ABS warning lamp

–

VDC OFF indicator lamp

–

SLIP indicator lamp

–

Remarks

– When the ignition switch is OFF

After the ignition switch is turned

ON


Ignition switch ON


When the VDC OFF switch turns

ON (VDC function OFF).

×

–

–

×

–

×

×

–

–

–


–

BRC-108


[VDC/TCS/ABS]

Condition

ABS warning lamp

×


×

SLIP indicator lamp

×

Remarks

ABS/TCS/VDC malfunction

× ×

–

–

When the ABS/TCS/VDC control unit is malfunctioning (power supply or ground malfunction).

– When the VDC is malfunctioning.

–

× ×



EFS002Y2

CAUTION:


Monitor item

SLCT LVR POSI

GEAR

FR RH SENSOR

FR LH SENSOR

RR RH SENSOR

RR LH SENSOR

ACCEL POS SIG

ENGINE SPEED·

STR ANGLE SIG

YAW RATE SEN

SIDE G SENSOR

PRESS SENSOR

BATTERY VOLT

Data monitor

Display content


OFF condition

A/T gear position

Wheel speed

Condition



N and P positions

1:1st gear

2:2nd gear

3:3rd gear

4:4th gear

Vehicle stopped


ON

OFF

0 [km/h (MPH)]


(within

±

10%)



ON)



With engine stopped


0%

0 to 100%

With engine running

Engine running

Straight-ahead

0 rpm


Approx. 0 deg Steering angle detected by steering angle sensor

Steering wheel turned –756 to 756 deg

Vehicle stopped Approx. 0 d/s

Yaw rate detected by yaw rate sensor

Vehicle running –100 to 100 d/s



—

BRC-121, "Wheel Sensor System Inspection"



BRC-123, "Steering

Angle Sensor System

Inspection"

BRC-124, "Yaw Rate/

Side/Decel G Sensor

System Inspection"

BRC-124, "Yaw Rate/

Side/Decel G Sensor

System Inspection"

Transverse G detected by side G-sensor

Brake fluid pressure detected by pressure sensor

Vehicle stopped

Vehicle running

Approx. 0 m/s

2

–16.7 to 16.7 m/s

2

With ignition switch turned ON and brake pedal released

With ignition switch turned ON and brake pedal depressed

Approx. 0 bar

–0 to 350 bar


Ignition switch ON 10 to 16V

BRC-129, "ABS/TCS/

VDC Control Unit Power and Ground Systems

Inspection"

—

A

B

C

D

E

BRC

G

H

I

J

K

L

M

BRC-109

FR LH IN SOL

FR LH OUT SOL

FR RH IN SOL

FR RH OUT SOL

RR RH IN SOL

RR RH OUT SOL

RR LH IN SOL

RR LH OUT SOL

CV1

CV2

SV1

SV2

Monitor item

STOP LAMP SW

OFF SW

ABS WARN LAMP

MOTOR RELAY

ACTUATOR RLY

OFF LAMP

SLIP LAMP

DECEL G-SEN


[VDC/TCS/ABS]

Display content


Condition

Data monitor

Brake pedal depressed

Brake pedal not depressed


ON

OFF


BRC-128, "Stop Lamp


VDC OFF switch

ON/OFF status

VDC OFF switch ON

(When VDC OFF indicator lamp is ON)

VDC OFF switch OFF

(When VDC OFF indicator lamp is OFF)

ABS warning lamp ON



ON

OFF

ON

OFF

BRC-131, "VDC OFF

SWITCH"


Lamp Does Not Come


Is Turned On"



VDC OFF indicator lamp status (Note 3)

SLIP indicator lamp status (Note 4)






When VDC OFF indicator lamp is ON

When VDC OFF indicator lamp is OFF


ON


OFF




OFF

ON

OFF

ON

ON

OFF

ON

OFF

ON

BRC-127, "Actuator


Circuit Inspection"

BRC-127, "Actuator


Circuit Inspection"




OFF

BRC-126, "Solenoid and

VDC Change-Over Valve

System Inspection"

VDC switch-over valve status

When actuator (switch-over valve) is active (“ACTIVE

TEST” with CONSULT-II) or actuator relay is inactive (when in fail-safe mode).

When actuator (switch-over valve) is not active and actuator relay is active (ignition switch ON).

Vehicle stopped

ON

OFF

ON Longitudinal acceleration detected by Decel

G-Sensor

Vehicle running OFF

BRC-124, "Yaw Rate/

Side/Decel G Sensor

System Inspection"

BRC-110


[VDC/TCS/ABS]

Data monitor


Condition



FLUID LEV SW



ON


OFF

ON

OFF

DI-45, "WARNING

LAMPS"

VDC FAIL SIG

TCS FAIL SIG

ABS FAIL SIG

EBD FAIL SIG

Fail signal status

VDC fail

TCS fail

ABS fail

EBD fail

OFF

VDC system

TCS system

ABS system

EBD system




OFF: Approximately 1.8 seconds after ignition switch is turned ON (when system is in normal operation) and TCS/VDC function is not activated.

Note 3: ON/OFF timing of VDC OFF indicator lamp

ON: For approximately 1.8 seconds after ignition switch is turned ON, or when a malfunction is detected and VDC OFF switch is ON.

OFF: Approximately 1.8 seconds after ignition switch is turned ON (when system is in normal operation.) And when VDC OFF switch is

OFF.

Note 4: SLIP indicator lamp ON/OFF timing

ON: For approximately 1.8 seconds after ignition switch is turned ON, or when a malfunction is detected and TCS/VDC function is activated while driving.

OFF: Approximately 1.8 seconds after ignition switch is turned ON (when system is in normal operation) and TCS/VDC function is not activated.

Flashing: TCS/VDC function is active during driving

A

B

C

D

E

BRC

G

H

I

J

K

L

M

BRC-111


[VDC/TCS/ABS]


EFS002Y4

CAUTION:

●

When the self-diagnosis, data monitor, or active test functions are being executed, EBD, ABS,

TCS, and VDC control is disabled.

●

●

●

When using CONSULT-II to conduct ABS/TCS/VDC control unit self-diagnosis, active test, work support, etc., first stop engine, connect the CONSULT-II, and select “ABS”.




Item

Wheel sensors

Stop lamp switch

Solenoid valves

Switch-over solenoid valves

Yaw rate/side G sensor

Pressure sensor

Steering angle sensor

Actuator relay

Motor relay

ABS warning lamp

Battery voltage


ABS/TCS/VDC actuator motor

CAN communication

Engine speed signal

VDC OFF switch


SLIP indicator lamp

Throttle angle

Gear


EBD/ABS/TCS/VDC signals


×

: Applicable

–: Not applicable

Self-diagnosis

×

×

×

×

×

×

×

×

×

–

×

×

–

–

–

×

×

–

–

×

×

×

–

Data monitor

×

×

×

×

×

×

×

×

×

×

×

–

×

×

×

×

×

–

×

×

×

×

×

Active test

–

–

–

–

×

–

–

×

×

–

–

–

–

–

–

–

–

–

–

–

–

×

–

BRC-112



1.


2.


CAUTION:



3.


4.


5.




[VDC/TCS/ABS]

BBIA0002E

C

D

E

A

B

BRC

G

SKIA3098E

H

I

J

K

PKIA2102E

6.



SELF-DIAGNOSIS

Description



1.


2.


CAUTION:


3.


4.


5.



L

M

BRC-113


[VDC/TCS/ABS]

CAUTION:


6.


●

When “NO FAILURE” is displayed, check the ABS warning lamp, SLIP indicator lamp and VDC OFF indicator lamp.

7.


8.


CAUTION:

●


9.





CAUTION:


11. For the final inspection, drive at approximately 30 km/h (19 MPH) for approximately 1 minute and confirm that the ABS warning lamp, SLIP indicator lamp, and VDC OFF indicator lamp are off.



FR LH SENSOR 1

[C1104]

RR RH SENSOR 1

[C1101

FR RH SENSOR 1

[C1103]

RR LH SENSOR 1

[C1102]






Check system

FR LH SENSOR 2

[C1108]

RR RH SENSOR 2

[C1105]

FR RH SENSOR 2

[C1107]

RR LH SENSOR 2

[C1106]





BRC-121, "Wheel Sensor System Inspection"

(Note 1)

STOP LAMP SW 1

[C1116]

ST ANGLE SEN CIRCUIT

[C1143, C1163]


Neutral position of steering angle sensor is dislocated, or steering angle sensor is malfunctioning.

BRC-128, "Stop Lamp


BRC-123, "Steering

Angle Sensor System

Inspection"

BRC-114


YAW RATE SENSOR

[C1145]

FR LH IN ABS SOL

[C1120]

FR LH OUT ABS SOL

[C1121]

RR RH IN ABS SOL

[C1126]

RR RH OUT ABS SOL

[C1127]

FR RH IN ABS SOL

[C1122]

FR RH OUT ABS SOL

[C1123]

RR LH IN ABS SOL

[C1124]

RR LH OUT ABS SOL

[C1125]

CV1

[C1164]

CV2

[C1165]

SV1

[C1166]

SV2

[C1167]

PUMP MOTOR (Note 3)

[C1111]

BATTERY VOLTAGE

[ABNORMAL]

[C1109]

ST ANGLE SEN SIGNAL

[C1144]

ST ANG SEN COM CIR

[C1156]

LONGITUDINAL G-SENSOR

[C1113]

CONTROLLER FAILURE

[C1110]

CAN COMM CIRCUIT

[U1000]


[VDC/TCS/ABS]


Yaw rate sensor has generated an error, or yaw rate sensor signal line is open or shorted.

Check system

BRC-124, "Yaw Rate/

Side/Decel G Sensor

System Inspection"









Front side VDC switch-over solenoid valve (cut valve) is open or shorted, or control line is open or shorted to power supply or ground.

Rear side VDC switch-over solenoid valve (cut valve) is open or shorted, or control line is open or shorted to power supply or ground.

Front side VDC switch-over solenoid valve (suction valve) is open or shorted, or control line is open or shorted to power supply or ground.

Rear side VDC switch-over solenoid valve (suction valve) is open or shorted, or control line is open or shorted to power supply or ground.

BRC-126, "Solenoid and

VDC Change-Over Valve

System Inspection"



BRC-127, "Actuator


Circuit Inspection"


BRC-129, "ABS/TCS/

VDC Control Unit Power and Ground Systems

Inspection"

Neutral position correction of steering angle sensor is not finished.

CAN communication line or steering angle sensor has generated an error.

BRC-123, "Steering

Angle Sensor System

Inspection"

Longitudinal G-sensor is malfunctioning, or signal line of longitudinal G-sensor is open or shorted.


BRC-124, "Yaw Rate/

Side/Decel G Sensor

System Inspection"

BRC-123, "ABS/TCS/

VDC Control Unit

Inspection"




BRC-130, "CAN Communication System

Inspection" (Note 2)

A

B

C

D

E

BRC

G

H

I

J

K

L

M

BRC-115


[VDC/TCS/ABS]


LATERAL G-SENSOR

[C1146]

BR FLUID LEVEL LOW

[C1155]

ENGINE SPEED SIG

ENGINE SIGNAL 1

[C1130]

STOP LAMP SW 2

[C1176]


Lateral G-sensor is malfunctioning, or signal line of lateral G-sensor is open or shorted.

Check system

BRC-124, "Yaw Rate/

Side/Decel G Sensor

System Inspection"


DI-45, "WARNING

LAMPS"


ECM judges the communication between ABS/TCS/VDC control unit and ECM is abnormal.



BRC-130, "CAN Communication System

Inspection"

EC-695, "AUTOMATIC

SPEED CONTROL

DEVICE (ASCD)"





DATA MONITOR


1.


CAUTION:


2.



CAUTION:


3.



4.



Item

(Unit)

ECU INPUT

SIGNALS


MAIN

SIGNALS

SELECTION

FROM

MENU

CAN DIAG

SUPPORT

MNTR

Remarks

GEAR

FR RH SENSOR

(km/h, MPH)

FR LH SENSOR

(km/h, MPH)

RR RH SENSOR

(km/h, MPH)

×

×

×

×

×

×

×

×

×

×

×

×

–

–

–

–





BRC-116

Item

(Unit)

RR LH SENSOR

(km/h, MPH)

BATTERY VOLT

(V)

SLCT LVR POSI

ACCEL POS SIG

(%)

ENGINE SPEED

(rpm)

STR ANGLE SIG

(deg)

YAW RATE SEN

(d/s)

DECEL G SEN

(d/s)

SIDE G-SENSOR

(m/s

2

)

PRESS SENSOR

(bar)

STOP LAMP SW

(ON/OFF)

OFF SW

(ON/OFF)

ABS WARN LAMP

(ON/OFF)

SLIP LAMP

(ON/OFF)

FR LH IN SOL

(ON/OFF)

FR LH OUT SOL

(ON/OFF)

RR RH IN SOL

(ON/OFF)

RR RH OUT SOL

(ON/OFF)

FR RH IN SOL

(ON/OFF)

FR RH OUT SOL

(ON/OFF)

RR LH IN SOL

(ON/OFF)

RR LH OUT SOL

(ON/OFF)


[VDC/TCS/ABS]

ECU INPUT

SIGNALS


MAIN

SIGNALS

SELECTION

FROM

MENU

× × ×

CAN DIAG

SUPPORT

MNTR

–

×

×

×

×

×

×

×

×

×

×

×

–

–

–

–

–

–

–

–

–

–

×

×

–

×

–

×

×

–

–

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

Remarks






Steering angle detected by steering angle sensor is displayed.

Yaw rate detected by yaw rate sensor is displayed.

Longitudinal acceleration detected by Decel G-sensor is displayed.

Transverse acceleration detected by side G-sensor is displayed.

Brake fluid pressure detected by pressure sensor is displayed.


VDC OFF switch (ON/OFF) status is displayed.


SLIP indicator lamp (ON/


















BRC-117

A

B

C

D

E

BRC

G

H

I

J

K

L

M

Item

(Unit)

OFF LAMP

(ON/OFF)

MOTOR RELAY

(ON/OFF)

ACTUATOR RLY

(ON/OFF)

CV1

(ON/OFF)

CV2

(ON/OFF)

SV1

(ON/OFF)

SV2

(ON/OFF)

VDC FAIL SIG

(ON/OFF)

TCS FAIL SIG

(ON/OFF)

ABS FAIL SIG

(ON/OFF)

EBD FAIL SIG

(ON/OFF)

FLUID LEV SW

(ON/OFF)

EBD SIGNAL

(ON/OFF)

ABS SIGNAL

(ON/OFF)

TCS SIGNAL

(ON/OFF)

VDC SIGNAL

(ON/OFF)

CAN COMM

(OK/NG)


[VDC/TCS/ABS]

ECU INPUT

SIGNALS

–


MAIN

SIGNALS

SELECTION

FROM

MENU

× ×

–

–

–

–

–

–

–

–

–

–

×

–

–

–

–

–

×

×

–

–

–

–

–

–

–

–

–

–

–

–

–

–

×

×

×

×

×

×

×

×

×

×

×

×

×

×

×

–

CAN DIAG

SUPPORT

MNTR

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

×

Remarks

OFF Lamp (ON/OFF) status is displayed.





Front side switch-over solenoid valve (cut valve) (ON/


Rear side switch-over solenoid valve (cut-valve) (ON/


Front side switch-over solenoid valve (suction valve)


Rear side switch-over solenoid valve (suction valve)


VDC fail signal (ON/OFF) status is displayed.

TCS fail signal (ON/OFF) status is displayed.







TCS operation (ON/OFF) status is displayed.

VDC operation (ON/OFF) status is displayed.



BRC-118


[VDC/TCS/ABS]

Item

(Unit)

ECU INPUT

SIGNALS


MAIN

SIGNALS

SELECTION

FROM

MENU

CAN DIAG

SUPPORT

MNTR

Remarks

CAN CIRC 1

(OK/UNKWN)

CAN CIRC 2

(OK/UNKWN)

CAN CIRC 3

(OK/UNKWN)

CAN CIRC 4

(OK/UNKWN)

CAN CIRC 5

(OK/UNKWN)

CAN CIRC 6

(OK/UNKWN)

CAN CIRC 7

(OK/UNKWN)

CAN CIRC CLC

(OK/UNKWN)

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

×

×

×

×

×

×

×

×



TRQ MAP S/C

TRQ MAP N/A

×

: Applicable

–: Not applicable

–

–

–

–

×

×

–

–



ACTIVE TEST

CAUTION:

● Do not perform active test while driving.

●

●




1.


CAUTION:


2.


3.

Touch “ABS”.


4.


5.


6.


A

B

C

D

E

BRC

G

H

I

J

K

L

M

LBR379

7.


8.


BRC-119


[VDC/TCS/ABS]


Operation

FR RH SOL

FR RH ABS SOLE-

NOID (ACT)

FR LH SOL

FR LH ABS SOLE-

NOID (ACT)

FR RH IN SOL

FR RH OUT SOL

FR LH IN SOL

FR LH OUT SOL

RR RH SOL

RR RH ABS SOLE-

NOID (ACT)

RR LH SOL

RR LH ABS SOLE-

NOID (ACT)

RR RH IN SOL

RR RH OUT SOL

RR LH IN SOL

RR LH OUT SOL

RR RH IN SOL

RR RH OUT SOL

REAR SOL

RR LH IN SOL

RR LH OUT SOL


UP

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

ABS solenoid valve

KEEP

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

DOWN

ON

ON*

ON

ON*

ON

ON*

ON

ON*

ON

ON*

ON

ON*

UP


OFF

ACTUA-

TOR UP

OFF

ACTUA-

TOR KEEP

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

NOTE:

●


●

●



ABS Motor


OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

OFF

Operation

ABS actuator relay

ABS motor relay

ON

ON

ON

OFF

ON

OFF

NOTE:

●


●


SFIA0593E

BRC-120


[VDC/TCS/ABS]




1.


PFP:00000

EFS002XB

A

B



OK or NG

OK

NG

>> GO TO 2.


2.


C

D

1.


2.


3.


NOTE:


4.


NOTE:



Yes >> GO TO 3.

No >> GO TO 6.

E

BRC

G

H

I

3.

CHECK TIRES

J



Yes >> GO TO 4.


4.


K

L


BEARING" .

OK or NG

OK

NG

>> GO TO 5.


BEARING" .

5.



OK or NG

OK

NG

>> GO TO 6.



.

M

BRC-121


[VDC/TCS/ABS]

6.


1.


2.



OK or NG

OK

NG

>> GO TO 7.


WFIA0105E

7.


1.


2.


Front LH

Front RH

Rear LH

Rear RH

Sensor



E125 - 14 G

Wire color

E125 - 13

E125 - 26

R

B

E125 - 27

E125 - 29

E125 - 28

E125 - 11

E125 - 12

W

P

L

V

LG

Wheel sensor


E18 - 1

E18 - 2

E117 - 1

E117 - 2

B123 - 1

B123 - 2

B122 - 1

B122 - 2

L

V

W

P

R

B

G

Wire color

LG

Continuity

Yes


OK or NG

OK

NG





1.


EFS002XC



ENGINE SIGNAL 1

ENGINE SIGNAL 2

ENGINE SIGNAL 3

ENGINE SIGNAL 4

ENGINE SIGNAL 6


Yes >> GO TO 2.


BRC-122


[VDC/TCS/ABS]

2.


1.


2.


OK or NG

OK

NG



ABS/TCS/VDC Control Unit Inspection


1.


EFS002XD



CONTROLLER FAILURE


Yes



Steering Angle Sensor System Inspection


1.



EFS002XF

A

B

C

D

E

BRC

G

H

I


ST ANGLE SEN CIRCUIT

ST ANGLE SEN SIGNAL


Yes >> GO TO 3.

No >> GO TO 2.

2.

DATA MONITOR CHECK

Conduct “Data Monitor” of the “STEERING ANGLE SIGNAL” to check if the status is normal.

Steering condition

Straight-ahead

Turn wheel 90

°

to the right.

Turn wheel 90

°

to the left.

OK or NG

OK

NG


>> GO TO 3.

Data monitor

-5deg - +5deg

Approx. +90

°

Approx. -90

°

3.


1.

Disconnect the ABS actuator and electric unit connector E125 and steering angle sensor M47.

2.


OK or NG

OK

NG

>> GO TO 4.


J

K

L

M

BRC-123


[VDC/TCS/ABS]

4.

CHECKING STEERING ANGLE SENSOR POWER AND GROUND

1.

Turn the ignition switch on.

2.

Check voltage between steering angle sensor connector M47 and ground.

Steering angle sensor connector E125

1 (Y/R)

3 (G)

Body ground

—

Measured value

(Approx.)

12V

WFIA0109E

3.

Check resistance between steering angle sensor connector M47 and ground.

Steering angle sensor connector E125

2 (B)

Body ground

—

Measured value

(Approx.)

0

Ω

OK or NG

OK

NG

>> Check the CAN communication system. Refer to

BRC-

130, "CAN Communication System Inspection" . If the

CAN communication system is OK, replace spiral cable

(steering angle sensor) and adjust neutral position of steering angle sensor. Refer to

BRC-137, "Adjustment of Steering Angle Sensor Neutral Position" .


WFIA0110E

Yaw Rate/Side/Decel G Sensor System Inspection

EFS002XG

CAUTION:

Sudden turns (such as spin turns, acceleration turns), drifting, etc. When VDC function is OFF (VDC

SW ON) may cause the yaw rate/side/decel G sensor system to indicate a problem. However this is not a problem if normal operation can be resumed after restarting the engine.


1.




YAW RATE SENSOR

SIDE G-SEN CIRCUIT

CAUTION:

When on a turntable, such as at a parking structure entrance, or when on a moving object with the engine running, the VDC OFF indicator lamp might turn on and the self-diagnosis using the CONSULT-

II the yaw rate sensor system might be displayed, but in this case there is no problem with the yaw rate sensor system. As soon as the vehicle leaves the turntable or moving object, restart the engine to return the system to normal.


Yes >> GO TO 2.


BRC-124


[VDC/TCS/ABS]

2.


Disconnect the ABS actuator and electric unit connector E125 and yaw rate/side/decel G sensor connector

M46.


OK or NG

OK

NG

>> GO TO 3.


3.

YAW RATE SENSOR/SIDE/DECEL G SENSOR HARNESS INSPECTION

1.

Turn off the ignition switch and disconnect yaw rate sensor/side/decel G sensor connector M46 and ABS actuator and electric unit connector E125.

2.

Check the continuity between the ABS actuator and electric unit vehicle side connector and the yaw rate/ side/decel G sensor connector M46.

A

B

C

D

E



19 (O)

36 (Y)

35 (G)

34 (B)

4 (R)

6 (W)

Yaw rate/side/decel G sensor connector M46

1 (O)

2 (Y)

3 (G)

4 (B)

5 (R)

6 (W)

OK or NG

OK

NG

>> GO TO 4.


4.

YAW RATE SENSOR/SIDE/DECEL G SENSOR INSPECTION

Continuity


1.

Connect the yaw rate sensor/side/decel G sensor M46 and ABS actuator and electric unit connector

E125.

2.

Use “Data Monitor” to check if the yaw rate sensor/side/decel G sensor are normal.

Vehicle status

When stopped

Right hand turn

Left turn

Yaw rate sensor

(Data monitor standard)

-4 to +4 deg/s

Negative value

Positive value

Side G sensor

(Data monitor standard)

-1.1 to +1.1 m/s

2

Negative value

Positive value

OK or NG

OK

NG


>> Replace the yaw rate sensor/side/decel G sensor. Refer to BRC-144, "Removal and Installation"

.

BRC

G

H

I

J

K

L

M

BRC-125


[VDC/TCS/ABS]

Solenoid and VDC Change-Over Valve System Inspection


1.


EFS002XH



FR LH IN ABS SOL

FR LH OUT ABS SOL

RR RH IN ABS SOL

RR RH OUT ABS SOL

FR RH IN ABS SOL

FR RH OUT ABS SOL

RR LH IN ABS SOL

RR LH OUT ABS SOL

CV 1

CV 2

SV 1

SV 2


Yes >> GO TO 2.


2.


1.

Disconnect ABS actuator and electric unit (control unit) connector E125.

2.


OK or NG

OK

NG

>> GO TO 3.


BRC-126


[VDC/TCS/ABS]

3.

CHECKING SOLENOID POWER AND GROUND

1.

Disconnect ABS actuator and electric unit (control unit) connector E125.

2.

Check voltage between ABS actuator and electric unit (control unit) connector E125 and ground.


16 (G/R)

Body ground

—

Measured value

(Approx.)

12V

A

B

C

D

WFIA0111E

E

3.

Check resistance between ABS actuator and electric unit (control unit) connector E125 and body ground.


31 (B)

46 (B)

Body ground

—

Measured value

Ω

(Approx.)

0

Ω

OK or NG

OK

NG

>> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control

unit). Refer to BRC-123, "ABS/TCS/VDC Control Unit Inspection"

.




1.





PUMP MOTOR


Yes >> GO TO 2.


2.




OK or NG

OK

NG

>> GO TO 3.


BRC

G

H

WFIA0112E

I

EFS002XI

J

K

L

M

BRC-127


[VDC/TCS/ABS]

3.


1.


2.



1 (R/B)

Body ground

—

Measured value

(Approx.)

12V

WFIA0106E

3.



46 (B)

Body ground

—

Measured value

(Approx.)

0

Ω

OK or NG

OK

NG






1.



WFIA0113E

EFS002XK


STOP LAMP SW


Yes >> GO TO 2.


2.


1.

Turn the ignition switch off and disconnect the ABS actuator and electric unit connector E125 and stop lamp switch connector E38.

2.


OK or NG

OK

NG

>> GO TO 3.


BRC-128


[VDC/TCS/ABS]

3.


Check the voltage between the ABS actuator and electric unit connector E125 terminal 23 (R/G) and ground.

23 (R/G) - Ground


(approx. 12V)


OK or NG

OK

NG



ABS/TCS/VDC Control Unit Power and Ground Systems Inspection


1.



WFIA0114E

EFS002XL

A

B

C

D

E

BRC


BATTERY VOLTAGE


Yes >> GO TO 2.


2.


1.


2.


OK or NG

OK

NG

>> GO TO 3.


3.

ABS/TCS/VDC CONTROL UNIT POWER AND GROUND CIRCUIT INSPECTION


Signal name



Ground Measured value

Power supply 45 (GR)

31 (B) —


Ground Continuity should exist.

46 (B)

OK or NG

OK

NG



G

H

I

J

K

L

M

BRC-129


[VDC/TCS/ABS]

Brake Fluid Level Sensor System Inspection


1.


EFS002XM

1.

Check the brake reservoir tank fluid level. If the level is low, add brake fluid.

2.

Erase the self-diagnosis results and check the self-diagnosis results.


BR FLUID LEVEL LOW


Yes >> GO TO 2.


2.


1.

Turn the ignition switch off and disconnect the ABS actuator and electric unit connector E125 and brake fluid level sensor connector E21.

2.


OK or NG

OK

NG

>> GO TO 3.


3.

CHECK THE HARNESS BETWEEN THE BRAKE FLUID LEVEL SENSOR AND THE ABS ACTUATOR

AND ELECTRIC UNIT (CONTROL UNIT)

Check the continuity between the brake fluid level sensor connector E21 and the ABS actuator and electric unit (control unit) connector E125.

ABS actuator and electric unit connector E125

Brake fluid level sensor connector E21

Continuity

38 (SB)

38 (SB)

Ground

+ (SB)

Ground

- (B)




OK or NG

OK

NG

>> Connect the connectors and conduct a ABS actuator and electric unit self-diagnosis.




1.






EFS002XN

BRC-130


[VDC/TCS/ABS]

2.




OK or NG

OK

NG

>> GO TO 3.


3.



Normal

CAN COMM: OK

CAN CIRC 1: OK

CAN CIRC 2: OK

CAN CIRC 3: OK


CAN CIRC 5: OK


Error (example)

CAN COMM: OK







A

B

C

D

E

BRC

G


TION" .

Component Inspection

VDC OFF SWITCH

● Check the continuity between terminals 1 and 2.

EFS002XO

1 -2 : Continuity should exist when pushing the switch.

Continuity should not exist when releasing the switch.

H

I

J

K

L

PFIA0307E

M

BRC-131




[VDC/TCS/ABS]

PFP:99999

EFS002XP

1.



OK or NG

OK

NG

>> GO TO 2.



2.



●


●



OK or NG

OK

NG

>> GO TO 3.


3.




OK or NG

OK

NG

>> GO TO 4.


4.






No


BRC-132



1.



OK or NG

OK

NG

>> GO TO 2.


BRC-113, "SELF-DIAGNOSIS"

.

2.




Yes

>> Perform Basic Inspection. Refer to BRC-108, "Basic

Inspection" .

No >> GO TO 3.

[VDC/TCS/ABS]

EFS002XQ

A

B

C

D

E

BRC

G

SBR540A

3.


1.


2.


OK or NG

OK

NG

>> GO TO 4.


BRC-108, "Basic Inspection" .

4.




●

●



OK or NG

OK

NG


Then retest.


H

M

I

J

K

L

BRC-133



1.


1.


2.


OK or NG

OK

NG

>> Go to



NOTE:



CAUTION:


[VDC/TCS/ABS]

EFS002XR

EFS002XS

1.




OK or NG

OK

NG



>> Go to



EFS002XT

NOTE:


1.

CHECK SYMPTOM

1.

Apply brake.

2.

Start engine.




No >> GO TO 2.

2.

RECHECK SYMPTOM



No >> Go to


BRC-134


[VDC/TCS/ABS]


EFS002XU

A

1.


Check 40A fusible link i and 50A fusible link j for ABS actuator and electric unit (control unit). For fusible link layout, refer to PG-3, "POWER SUPPLY ROUTING CIRCUIT" .

OK or NG

OK

NG

>> GO TO 2.


2.


1.


2.



Yes >> GO TO 3.



B

C

D

E

BRC

G

WFIA0116E

H

3.






I

J

K

WFIA0112E

EFS002XV

L

M


1.


Carry out self-diagnosis. Refer to BRC-113, "SELF-DIAGNOSIS" .


Yes

>> Refer to BRC-116, "Display Item List" .


BRC-135


Vehicle Jerks During TCS/VDC Activation

[VDC/TCS/ABS]

EFS002XW

1.

ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) SELF-DIAGNOSIS



Yes >> After checking and repairing the applicable item, perform the ABS actuator and electric unit (control unit) self-diagnosis again.

No >> GO TO 2.

2.

ENGINE SPEED SIGNAL INSPECTION

Perform data monitor with CONSULT-II for the ABS actuator and electric unit (control unit).

Is the engine speed at idle 400 rpm or higher?

Yes >> GO TO 4.

No >> GO TO 3.

3.

ECM SELF-DIAGNOSIS

Perform ECM self-diagnosis.



No >> GO TO 4.

4.

TCM SELF-DIAGNOSIS

Perform TCM self-diagnosis.



No >> GO TO 5.

5.


Disconnect the ABS actuator and electric unit (control unit) connector and the ECM connectors and check the terminals for deformation, disconnection, looseness or damage.

OK or NG

OK

NG

>> GO TO 6.

>> Repair or replace the connector terminal.

6.

CAN COMMUNICATION INSPECTION

Check the CAN communication system. Refer to BRC-130, "CAN Communication System Inspection" .

OK or NG

OK

NG

>> INSPECTION END.

>> Reconnect the connectors, and perform ABS actuator and electric unit (control unit) self-diagnosis.

BRC-136

ON-VEHICLE SERVICE

[VDC/TCS/ABS]


Adjustment of Steering Angle Sensor Neutral Position

PFP:00000

EFS002TF

After removing/installing or replacing ABS actuator and electric unit (control unit), steering angle sensor, steering components, suspension components, tires, or after adjusting wheel alignment, be sure to adjust neutral position of steering angle sensor before running vehicle.

NOTE:

Adjustment of steering angle sensor neutral position requires CONSULT-II.

1.

Stop vehicle with front wheels in straight-ahead position.

2.

Connect CONSULT-II to data link connector on vehicle, and turn ignition switch ON (do not start engine).

3.

Touch “ABS”, “WORK SUPPORT” and “ST ANGLE SENSOR

ADJUSTMENT” on CONSULT-II screen in this order.

A

B

C

D

E

BRC

BBIA0002E

4.

Touch “START”.

CAUTION:

Do not touch steering wheel while adjusting steering angle sensor.

5.

After approximately 10 seconds, touch “END”. (After approximately 60 seconds, it ends automatically.)

6.

Turn ignition switch OFF, then turn it ON again.

7.

Run vehicle with front wheels in straight-ahead position, then stop.

8.

Select “DATA MONITOR”, “SELECTION FROM MENU”, and

“STR ANGLE SIG” on CONSULT-II screen. Then check that

“STR ANGLE SIG” is within 0

±

2.5 deg. If value is more than specification, repeat steps 1 to 5.

9.

Erase memory of ABS actuator and electric unit (control unit) and ECM.

10. Turn ignition switch to OFF.

SFIA0371E

Calibration of Yaw Rate/Side/Decel G Sensor

EFS002TG

After removing/installing or replacing yaw rate/side/decel G sensor, ABS actuator and electric unit (control unit), steering components, suspension components, tires or after adjusting wheel alignment, be sure to adjust neutral position of steering angle sensor before running vehicle.

NOTE:

Calibration of yaw rate/side/decel G sensor requires CONSULT-II.

1.

Stop vehicle with front wheels in straight-ahead position.

2.

Connect CONSULT-II to data link connector on vehicle, and turn ignition switch ON (do not start engine).

3.

Touch "ABS", "WORK SUPPORT" and "DECEL G SEN CALI-

BRATION" on CONSULT-II screen in this order.

G

H

I

J

K

L

M

BBIA0002E

BRC-137


4.

Touch "START".

5.

After approximately 10 seconds, touch "END". (After approximately 60 seconds, it ends automatically.)

6.

Turn ignition switch OFF, then turn it ON again.

7.

Run vehicle with front wheels in straight-ahead position, then stop.

8.

Select "DATA MONITOR", "SELECTION FROM MENU", and

"DECEL G SEN" on CONSULT-II screen. Then check that

"DECEL G SEN" is within

±

0.08G. If value is more than specification, repeat steps 1 to 5.

9.

Erase memory of ABS actuator and electric unit (control unit) and ECM.

10. Turn ignition switch to OFF.

[VDC/TCS/ABS]

LFIA0171E

BRC-138

WHEEL SENSORS

WHEEL SENSORS


[VDC/TCS/ABS]

PFP:47910

EFS002W6

A

B

WFIA0102E

CAUTION:




CAUTION:



●


G

H

I

J

K

L

M

C

D

E

BRC

BRC-139

SENSOR ROTOR

[VDC/TCS/ABS]

SENSOR ROTOR


PFP:47970

EFS002W7

NOTE:



REMOVAL

1.


2.


LFIA0079E

INSTALLATION



LFIA0083E

BRC-140




[VDC/TCS/ABS]

PFP:47660

EFS002WA

A

B

I

J

WFIA0104E

REMOVAL

1.


2.


3.


4.


5.


6.


7.


8.


INSTALLATION

CAUTION:


1.


2.


3.


4.


5.


6.


K

L

M

BRC-141

BRC

G

H

C

D

E


[VDC/TCS/ABS]

7.


8.


9.

Adjust the steering angle sensor. Refer to

BRC-137, "Adjustment of Steering Angle Sensor Neutral Position" .

BRC-142

STEERING ANGLE SENSOR

STEERING ANGLE SENSOR


Refer to SRS-42, "Removal and Installation" .

[VDC/TCS/ABS]

PFP:25554

EFS0031B

A

B

BRC

G

H

C

D

E

K

L

I

J

M

BRC-143

G SENSOR

G SENSOR


REMOVAL

1.

Remove center console. Refer to IP-17, "Center Console" .

2.

Disconnect harness connector.

3.

Remove attaching nuts and remove yaw rate/side/decel G sensor.

CAUTION:

● Do not drop or strike the yaw rate/side/decel G sensor.

●

Do not use power tools to remove or install yaw rate/side/ decel G sensor.

INSTALLATION

To install, reverse the removal procedure.

CAUTION:

● Do not drop or strike the yaw rate/side/decel G sensor.

[VDC/TCS/ABS]

PFP:47930

EFS002UN

PFIA0450E

BRC-144

Nissan Maxima 2004 Workshop Manual

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