[54A] Chassis Electrical

[54A] Chassis Electrical
54A-1
GROUP 54A
CONTENTS
GENERAL INFORMATION . . . . . . . .
54A-2
COMBINATION METER . . . . . . . . . . . 54A-10
DIAGNOSTIC SYSTEM . . . . . . . . . . .
54A-2
MULTI CENTRE DISPLAY . . . . . . . . . 54A-12
BATTERY. . . . . . . . . . . . . . . . . . . . . .
54A-3
RADIO AND CD PLAYER, ANTENNA 54A-15
IMMOBILIZER SYSTEM . . . . . . . . . .
54A-4
ACCESSORY SOCKET . . . . . . . . . . . 54A-17
LIGHTING. . . . . . . . . . . . . . . . . . . . . .
54A-6
CHASSIS ELECTRICAL
54A-2
GENERAL INFORMATION
GENERAL INFORMATION
M2540000100261
The adoption of new accessories and functions has
enhanced a lineup of equipment.
FEATURES
ENHANCED VISIBILITY AND SAFETY
ENHANCED EASE-OF-USE AND CONVENIENCE
• The engine immobilizer system with the improved
security system has been applied, and the immobilizer-ECU is integrated with ETACS-ECU.
• The large four headlamps with the lightweight
resin lenses have been adopted.
• The day time running light (DRL) is installed as
an option for several models.
• The high-mounted stop lamp has been installed
on the tailgate for all models.
• Reliable information transmission can be
achieved by connecting the combination meters,
and centre display and each ECU via CAN communication.
• The combination meters are provided integrated
with a perfect round-shaped speedometer where
the needles operate at the wider angle.
IMPROVEMENTS IN SERVICEABILITY
• Installation of two diagnosis connectors for
MUT-III inspection.
• Integration of diagnosis and service data in the
combination meter and the centre display, enabling communication with MUT-III.
IMPROVEMENTS IN COMMERCIAL
VALUE
• A new communication protocol, LIN (Local Interconnect Network), is applied as the inter-vehicle
communication for the lamp control with the lighting switch.
• The centre display is installed to display with
characters outside air temperature, vehicle information (average speed, instant fuel consumption,
remaining distance), clock, and audio information.
• Accessory sockets are added.
• In dash 6 disc CD changer is installed as an
option.
• The remote controlled radio switch is installed to
the steering wheel as an option.
DIAGNOSTIC SYSTEM
M2540001000234
Service quality has been improved by fitting diagnosis connectors for the MUT-III inspection near the left
knee area of the driver's seat on the instrument
panel.
Diagnostic Function
MPI
Automated
ABS
Manual
Transmission
Active
Stability
Control
SRS
Diagnosis code set
×
×
×
×
×
Output of service data
×
×
×
×
×
Actuator test
×
×
×
×
−
Diagnosis record stored
×
×
×
×
×
Erasure of diagnosis code ×
by the MUT-III
×
×
×
×
Status indication by
diagnosis code*
−
−
×
×
−
Estimated vehicle speed
sent
−
−
−
−
−
ECU information display
−
−
×
×
−
CHASSIS ELECTRICAL
54A-3
BATTERY
Diagnostic Function
Electric
Power
Steering
Immobilizer Combinati
on meter
Multi
centre
display
ETACS
A/C
Diagnosis code set
×
×
×
×
×
×
Output of service data
×
×
×
−
−
×
Actuator test
×
−
×
−
−
×
Diagnosis record stored
×
×
×
×
×
×
Erasure of diagnosis code ×
by the MUT-III
×
×
×
×
×
Status indication by
diagnosis code*
−
−
×
−
−
×
Estimated vehicle speed
sent
−
−
× (via CAN) × (via CAN) × (via CAN) −
ECU information display
−
−
×
NOTE: *If a diagnosis code is sent for this function,
the display informs users whether a mechanical
problem currently exists or whether it existed before
but normal operation has been restored. The message for the former state identifies it as a current
trouble and the message for the latter identifies it as
a past trouble.
DIAGNOSIS CONNECTORS
−
−
×
Diagnosis connector
1
−
2
−
3
−
4
Earth
5
Earth
6
CAN communication line (CAN_H)
7
MPI, Automated Manual Transmission
8
−
9
−
10
−
11
ECU optimisation control
12
−
13
−
14
CAN communication line (CAN_L)
15
−
16
Battery power supply
1 2 3 4 5 6 7 8
9 10 11 1213 1415 16
16-pin connector (black)
AC311953 AB
BATTERY
M2540002000237
Light and compact batteries have been adopted.
CHASSIS ELECTRICAL
54A-4
IMMOBILIZER SYSTEM
SPECIFICATION
Item
54203
56103
Voltage V
12
12
Capacity (20-hour rate) Ah
42
61
Electrolytic fluid specific gravity (fully charged state 1.280
at 20°C)
1.280
IMMOBILIZER SYSTEM
M2540003000188
The engine immobilizer system prevents the engine
from starting and immobilizes the vehicle if a key
other than the key registered for that vehicle is used
in an attempt to start the engine after forced entry.
The engine immobilizer system consists of the ignition key, key ring antenna, immobilizer-ECU, and
engine-ECU <M/T> or engine automated manual
transmission electronic control unit
(engine-A-M/T-ECU) <automated manual transmission>. It works in the following way and has these
functions.
1. With the ignition key turned ON, the transponder
(a small transmitter) integrated in the ignition key
transmits its own ID code to the key ring antenna
via radio wave.
2. According to the sent ID code, the ETACS-ECU
controls the engine-ECU <M/T> or
engine-A-M/T-ECU <automated manual transmission> only when the sent ID code agrees with
the pre-registered one.
3. The system is designed to be maintenance-free
because the power source for the transponder is
supplied by the key ring antenna. Three ignition
keys are provided, and up to eight keys can be
registered to one vehicle as needed. More than
one trillion of ID code combinations can be registered, and parts of them are irregularly changed
whenever the ignition key is turned ON. This feature prevents code copying, resulting in higher
security of the system.
NOTE: In case of replacement of the ETACS-ECU,
or loss or addition of the ignition key, all key ID
codes should be registered again using MUT-III
as follows.
.
• In case of loss of the ignition key, all keys
except the lost one should be registered
again for eliminating the registration of the
lost key.
• For addition of a key, all the keys to be used
afterwards including the added key should be
registered again.
DIAGNOSIS CODE TABLE
Diagnosis code No.
Diagnosis item
B1721
Base station failure
B1722
Antenna failure
B1723
Transponder communication failure
B1725
Wrong data/random number in CAN message
B1726
Too much challenges received
B1730
Key out of sync
B1731
Immobilizer communication failure
CHASSIS ELECTRICAL
54A-5
IMMOBILIZER SYSTEM
CONSTRUCTION DIAGRAM
Ignition key
Key ring antenna
Engine-ECU <M/T> or
Engine-A-M/T-ECU
<Automated manual transmission>
ETACS-ECU
(immobilizer-ECU)
Power
AMP
ID code
SCI
Clock
Data
RF circuit
SCI
CANBus
Ignition
CPU
CPU
Transponder
Steering lock
CANI/F
CAN-I/F
Injection
AC312166AB
MAIN COMPONENTS
Component name
Outline of function
Transponder
Is power-supplied by the key ring antenna. When the transponder receives
random number data, it processes it and the encrypted code. Then it transmits
the process result to the ETACS-ECU.
Key ring antenna (included The ETACS-ECU supplies power via an antenna on a steering lock by
an amplifier)
transmission of electromagnetic waves to a transponder built into a key, using
magnetic coupling
ETACS-ECU
(immobilizer-ECU
integration)
• Supplies electrical power to the transponder integrated in the ignition key,
and transmits random number data.
• Verifies the encrypted code which is sent from the transponder. If the code
is correct, it sends an engine mobilization signal to the engine-ECU <M/T>
or engine-transmission-ECU <Automated manual transmission>.
Engine-ECU <M/T> or
engine-transmission-ECU
<Automated manual
transmission>
Starts the engine, and then continues the engine running if an engine
mobilization signal is confirmed. If an engine immobilization signal is
confirmed, the ECU cancels the engine control and stops the engine.
Encrypted code registration criteria table
The ignition key contains a transponder (small transmitter), which retains an unique encrypted code.
Under any of the conditions below, the encrypted
code should be registered in the ETACS-ECU again.
The ETACS-ECU can retain maximum eight different
encrypted codes. This means that maximum eight
ignition keys can be registered.
Component to be replaced
Engine-ECU <M/T>
or engine-A/T-ECU
<A/T>
Engine-ECU <M/T> or
engine-A/T-ECU <A/T> is
replaced
−
When engine-ECU <M/T> or
engine-A/T-ECU <A/T> is
overwritten
−
ETACS-ECU
Ignition key
Should not be
replaced
Should not be replaced
Should not be
replaced
Should not be replaced
Should be registered
again
Should be registered
again
CHASSIS ELECTRICAL
54A-6
LIGHTING
Should not be
replaced
−
When ignition key is added
Should not be
replaced
Should not be
replaced
• Additional ignition key
should be registered
• All ignition keys should
be registered again
When ignition key is lost
Should not be
replaced
Should not be
replaced
All the ignition keys other
than the lost one should
be registered again
When ETACS-ECU is replace
Should not be replaced
All ignition keys should be
registered again
NOTE: When ETACS-ECU or engine-ECU <M/T> or
engine-transmission-ECU <automated manual transmission> is replaced, reinput the vehicle information
with the variant coding, using the MUT-III.
LIGHTING
M2540004000341
EXTERIOR LAMPS
• The headlamp employs the large four-lamp integrated with the front turn signal lamp and position
lamp, creating the integrity appearance with the
hood. The internal lens design looks like a precision machine, achieving improved appearance.
• A headlamp levelling function is adopted.
• The high mounted stop lamp is standard
equipped in order to improve safety.
• The day time running lamp (DRL) is installed as
an option.<LH drive vehicles>
• The appearance of the rear combination lamp
has been improved by featuring a cut lens and
vacuum evaporating the aluminium on the inner
area of the lamp.
• The rear fog lamp is adopted.
• A high mount stop lamp has been installed to the
tailgate spoiler.
SPECIFICATION
Item
Headlamp assembly
Specification
Headlamp W x number
(Halogen bulb)
55 (H7) × 2
Position lamp W
5
Front turn signal lamp W
21
Front fog lamp W
55 (H11)
Side turn signal lamp W
5
Rear combination lamp
Tail lamp W
<Vehicles without rear fog lamp>
21
Tail / rear fog lamp W/W*
<Vehicles with rear fog lamp>
21/4*
Stop lamp W
21
Rear turn signal lamp W
21
Back-up lamp W
21
High-mounted stop lamp W × number
5x4
Licence plate lamp W × number
5×2
CHASSIS ELECTRICAL
54A-7
LIGHTING
NOTE: .
1. The brackets ( ) show the bulb type.
2. *: the rear fog lamp is installed in the driver's side
only.
CONSTRUCTION DIAGRAM
Side turn signal lamp
Headlamp <low beam>
Headlamp <high beam>
Headlamp
assembly
Front turn signal lamp
Front fog lamp
Position lamp
AC311896 AB
High-mounted stop lamp
Stop lamp
Rear turn
signal lamp
Rear
combination
lamp assembly
Back-up lamp
Licence plate lamp
Tail lamp or
Tail lamp/Rear fog lamp
AC311897AB
HEADLAMP LEVELING SYSTEM
Headlamp levelling switch
AC313091AB
The beam direction of the headlamps changes
according to the number of passengers and the
amount of load. The headlamp levelling function is a
system that allows the driver to change the direction
of headlamp beam so that the drivers of oncoming
cars are not dazzled by the headlamps. The headlamp levelling switch allows changing the direction in
five steps: 0 to 4.
CHASSIS ELECTRICAL
54A-8
LIGHTING
Relationship between the switch positions and the number of passengers/loads
Switch position
0
1
2
3
4
Passenger and
load
When a more
load than those
to the left is on
the vehicle
Driver only or
driver and
one passenger
AC301941AB
Driver and
four passenger,
and loads
AC301943AB
Driver and
four passenger
AC301942AB
Driver and
heavy loads
AC301944AB
OPERATION
1. The headlamp levelling switch increases the
resistance as it is turned from 0 to 4. Turning the
headlamp levelling switch changes the voltage at
point A. When the headlamp levelling switch is
turned from 0 to 4, the voltage at point A
decreases. Upon detection of this voltage change,
the headlamp levelling unit turns the motor to
lower the beam direction. At this time, the
resistance of the variable resistor in the headlamp
assembly changes, and the voltage at point B
decreases gradually. When the voltages at points
A and B become equal, the headlamp levelling
unit stops the motor.
2. Turning the headlamp levelling switch from 4 to 0
increases the voltage at point A, and then the
headlamp levelling unit turns the motor in the
direction opposite to that mentioned in Item 1,
increasing the voltage at point B. When the
voltages at points A and B become equal, the
headlamp levelling unit stops the motor.
3. The headlamp levelling unit detects voltage
changes caused by headlamp levelling switch
operation, and turns the motor to change the
directions of the headlamp deflectors for the
adjustment of the headlamp beam direction.
Fuse
Headlamp
assembly
(levelling : LH)
Headlamp
assembly
(levelling : RH)
Variable resister
Motor
drive
circuit
Headlamp
levelling unit
Headlamp aiming
adjustment
Fuse
B
Variable resister
Motor
drive
circuit
Voltage
comparison
circuit
A
Headlamp
levelling unit
B
Voltage
comparison
circuit
Headlamp
levelling
switch
1 2 3
0
ILL
4
A
Headlamp aiming
adjustment
AC300208AB
CHASSIS ELECTRICAL
54A-9
LIGHTING
INTERIOR LAMPS
• A room lamp serving also as map lamp which can
be used at both the driver's seat and passenger
seat is provided.
• A luggage compartment lamp to lamp the backseat and luggage compartment lamp to lamp the
luggage room are provided.
SPECIFICATIONS
Item
Specification
Room lamp W × number
5.0 × 2
Luggage compartment lamp W
10
CONSTRUCTION DIAGRAM
Room lamp
Luggage compartment lamp
AC311912 AB
CHASSIS ELECTRICAL
54A-10
COMBINATION METER
COMBINATION METER
M2540005000344
The combination meter features large, clearly visible
analogue indicators. Designed to be easy-to-distinguish by drivers, the gauges are arranged with the
speedometer in the middle, the fuel gauge at left,
and the tachometer at right. The combination meter
offers the following advantages.
• CAN communication is used for more reliable
transmission of all gauge data and indicator lamp
input signals, such as vehicle speed, engine
RPM, and coolant temperature. For further
details on CAN, refer to P.54C-2 GROUP 54C,
CAN. The signals that the combination meter
uses are described in the CAN communications
input signals table .
• Several diagnosis functions such as the diagnosis code memory and actuator tests are prepared
in order to improve serviceability.
• The large passenger air bag off indicator is
installed in the meter.
• The daytime dipper button is installed in the
meter.
• For a brighter display at night and for a longer
useful life, all indicator lamps, warning lamps, and
illumination bulbs use LEDs.
• The indicators for the speedometer, fuel gauge,
and other gauges are driven by a stepping motor.
For further details, consult the stepping motor
section P.54A-10.
• The electric speedometer is adopted so that it is
operated by vehicle speed signals sent from
engine-ECU or engine-A-M/T ECU via CAN communication.
• A large and clear LCD type odo-tripmeter is provided. The odometer continuously displays values while the tripmeter adopts a twin-trip (trip A,
trip B) function which is switched by a reset button. Also the shift indicator features a clearly visible LCD display.
• Comes with a front and rear fog lamp indication
lamps to let the driver know that the fog lamp is
on.
• A seat belt warning lamp is installed to encourage
the driver to fasten the seat belt.
• The speedometer is an electronic type speedometer which operates by the pulse signal generated by the vehicle speed sensor.
• The fuel gauge is provided with a triangular mark
indicating the location of the fuel filler door to
clearly that the fuel filler door is on the left side of
the car.
CONSTRUCTION DIAGRAM
Speedometer
Rear fog lamp
indicator lamp
Fuel gauge
Tachometer
AC312517AB
Seat belt warning lamp
Front passenger's air bag off
indicator lamp
Odometer/Trip meter
Allshift indicator display and
immobilizer indicator display
Daytime dipper button
CHASSIS ELECTRICAL
54A-11
COMBINATION METER
STEPPING MOTOR
When ignition switch is turned to ON position or
LOCK (OFF) position
15
Deviation of needle
No deviation of needle
AB
AC313113
1
When the battery line is connected or
a voltage drops from cranking or the like
AC311629 AB
These gauges use a stepping motor as the drive
mechanism for the indicators (called the "movement"). Compared with conventional movements, the
torque for driving the indicators is much greater for
superior indicator accuracy and more stable
response. The indicator position displayed is determined as the microcontroller circuit in the gauge controls the stepping motor. In conventional gauges, the
indicator revolves 360° in response to 360° driving
controls. However, a stepping motor is designed so
that the indicator revolves only 45°, even in response
to a drive control of 360°. The 45° drive control must
be repeated to make the indicator rotate 360°. Thus,
at a position 45° away from the indicator display
position, there will be an identical control.
As a result, in the case of a great impact such as
from an accident when the indicator becomes misaligned, if the ignition is switched on to start driving
while the indicator is misaligned, the indicator will
function while misaligned. Thus, to return the indicator to the normal position in case this happens, when
the ignition is switched on, the indicator positions are
reset to their respective positions after the battery
line is connected after it is cut. After the battery line is
cut and reconnected, the indicators simply return to
the zero position. The same operation is performed
after voltage is restored if gauge functions are lost
because of a voltage drop from cranking or the like.
Furthermore, the indicator only returns 45° after the
ignition is switched on or the lock is turned off. The
indicator is not moved if it is not misaligned.
CAN COMMUNICATION INPUT SIGNALS TABLE
Signal
Transmitter ECU
Ambience temperature signal
ESP
Vehicle speed signal
Engine-ECU or
engine-A-M/T-ECU
Tank filling level signal
Engine speed signal
Odometer signal
Charge warning lamp illumination request signal
Check engine warning lamp illumination request signal
CHASSIS ELECTRICAL
54A-12
MULTI CENTRE DISPLAY
Signal
Transmitter ECU
Ambience temperature
ETACS-ECU
Illumination signal
Seat belt reminder/warning lamp illumination request signal
Oil pressure warning lamp illumination request signal
Brake warning lamp illumination request signal
Fuel warning lamp illumination request signal
High-beam indicator request signal
Door "Open" signal
Front or rear fog lamp indicator illumination request signal
Odometer backup signal
Turn-signal indicator lamp illumination request signal
ABS warning lamp request signal
ABS-ECU
Electric power steering warning lamp
Electric power steering-ECU
Communication standby signal
ETACS-ECU
Ignition switch (ACC) signal
Ignition switch (IG1) signal
DIAGNOSIS CODE TABLE
Diagnosis code No. Diagnostic item
U1073
Bus off error
U1100
Engine-ECU CAN communication time-out
U1101
U1102
ABS-ECU CAN communication time-out
U1106
Electric power steering-ECU CAN communication time-out
U1109
ETACS-ECU CAN communication time-out
U1120
Engine-related CAN communication failure information
U1206
Abnormal communication standby indication flag
MULTI CENTRE DISPLAY
M2540000700047
Multi centre display is installed to display the vehicle
information with characters. The multi centre display
has the following features.
• Clock display
• Outside temperature display
• Vehicle information display* (average speed,
instant fuel consumption, remaining distance)
• Audio information display
NOTE: .
• The clock is displayed in the screens for all information.
• *This signal transmission and reception are performed via CAN communication. For CAN details,
refer to GROUP 54C P.54C-6.
CHASSIS ELECTRICAL
MULTI CENTRE DISPLAY
54A-13
Display item
Function
Informat Clock display
ion item
The vehicle with the genuine radio set can
adjust its time automatically using the radio
control switch.
Outside temperature display
• The display available range is -40° to
50°.
• When the temperature is 3° or less, the
temperature display flashes with an
alarm for 10 seconds to encourage the
freezing prevention.
Vehicle
information
display
(only for the
vehicle with
the genuine
radio set)
Average speed
Auto reset mode or Manual reset mode can
be set optionally for measurement.
Instant fuel consumption
Auto reset mode or Manual reset mode can
be set optionally for measurement.
Remaining distance (with caution of
remaining distance)
When the possible cruising distance
reaches approximately 50 km/h (approx. 30
miles), the indicator is displayed with an
alarm to encourage refueling.
Audio
information
display
(only for the
vehicle with
the genuine
radio set)
CD and CD changer mode
Indication of setting status
Radio mode
Indication of setting status
RDS (Radio data system)
Program identification search function,
Alternative frequencies function, etc
Volume, tone and valance
BASS, TRE, FAD, and BAL are adjustable.
CONSTRUCTION DIAGRAM
Multi-centre display
AC311613 AB
OUTSIDE TEMPERATURE DISPLAY
(with caution of road freezing)
CLOCK DISPLAY
AC311604 AB
CHASSIS ELECTRICAL
54A-14
MULTI CENTRE DISPLAY
VEHICLE INFORMATION DISPLAY
Average speed
Instant fuel consumption
AC311605 AB
Remaining distance
(with caution of remaining distance)
AC311606 AB
AUDIO INFORMATION DISPLAY
CD and CD changer mode
Radio mode
AC311607 AB
RDS (Radio Data System) display
AC311608 AB
CAN COMMUNICATION INPUT SIGNALS TABLE
Signal
Transmitter ECU
Buzzer sounding request signal
ETACS-ECU
Ignition switch (ACC) signal
Communication standby signal
DIAGNOSIS CODE TABLE
Diagnosis code No.
Diagnostic item
U1073
Buss-off
U1100
Loss of "Engine" ECU Message (Timeout) or not equipped
U1102
Loss of "Active Stability Control System/TL/ABS" ECU Message (Timeout)
or not equipped
U1108
Loss of "Combination Instrument" Module Message (Timeout) or not
equipped
U1109
Loss of "ETACS" ECU Message (Timeout) or not equipped
U1120
Fail Information from Engine Module
U1122
Fail Information from Active Stability Control System/TCL/ABS ECU
U1128
Fail Information from Electric power steering-ECU
CHASSIS ELECTRICAL
RADIO AND CD PLAYER, ANTENNA
Diagnosis code No.
Diagnostic item
U1600
MBUSY open
U1601
MBUSY short
U1602
MDATA open
U1603
MDATA short
U1604
MSCK open
U1605
MSCK short
54A-15
RADIO AND CD PLAYER, ANTENNA
M2540006000325
RADIO AND CD PLAYER
The following functions are installed an options. The
CD player can play both CD-R and CD-RW.
SPECIFICATION
Item
TYPE 1
TYPE 2
AM/FM electronic tuning <option> AM/FM electronic tuning radio
with CD player <option>
Power amplifier with radio
General 140 W
General 140 W
RDS (radio data system)
function
Available
Available
CD changer (6 disc CD)
<option>
Setting is available
Setting is available
CONSTRUCTION DIAGRAM
<TYPE 1>
<TYPE 2>
AM/FM electronic tuning radio
AM/FM electronic tuning radio with CD player
<CD auto changer>
AC311918AB
SPEAKER
The speaker can be selected between 4-speaker
and 6-speaker as an option.
CHASSIS ELECTRICAL
54A-16
RADIO AND CD PLAYER, ANTENNA
SPECIFICATION
Location
Four speakers <option>
Six speakers< option>
Front door
-
Equipped (tweeter − 3.5 cm)
Equipped (dual cone full range − 16
cm)
Equipped (dual cone full range − 16
cm)
Equipped (dual cone full range − 13
cm)
Equipped (dual cone full range − 13
cm)
Rear door
ANTENNA
Featuring a roof antenna.
CONSTRUCTION DIAGRAM
Feeder cable
Roof antenna
Tweeter
Front speaker
Rear speaker
AC311927AC
NOTE: The * indicates equipped on the left and right sides.
REMOTE CONTROLLED RADIO SWITCH
Audio control switch
A
B
C
AC311941 AB
The remote controlled radio switch is installed on the
back of steering wheel so that the driver can control
the audio while holding the steering wheel during
driving.
Position
LH hand
Function
Radio
RH hand
CD
Radio
CD
CHASSIS ELECTRICAL
ACCESSORY SOCKET
Position
LH hand
A
Seek up
Track up
Volume up
B
Memory
channel
selection
Disk up
change
Mode change
Seek
down
Track
down
C
54A-17
RH hand
Volume down
ACCESSORY SOCKET
M2540008000149
Accessory socket
AC311922AB
AC311922
Power sockets for electrical accessories are located
on left corner of the luggage compartment. When
using one accessory socket alone, the maximum
load is up to 120W.
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