A340E (2JZ-GTE) Automatic Transmission User manual

AT2–1
A340E (2JZ–GTE)
AUTOMATIC TRANSMISSION
AT2–2
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
OPERATION
FUNCTION OF COMPONENTS
*Down–shift only–no up–shift
–
OPERATION
AT2–3
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
Component
–
OPERATION
Function
O/D Direct Clutch (Co)
Connect overdrive sun gear and overdrive carrier
O/D Brake (Bo)
Prevents overdrive sun gear from turning either clockwise or counterclockwise
O/D One–Way Clutch (Fo)
When transmission is being driven by engine, connects overdrive sun gear
and overdrive carrier
Forward Clutch (C1)
Connects input shaft and front planetary ring gear
Direct Clutch (C2)
Connects input shaft and front & rear planetary sun gear
2nd Coast Brake (B1)
Prevents front & rear planetary sun gear from turning either clockwise or counterclockwise
2nd Brake (B2)
1st & Reverse Brake (B3)
No.1 One–Way clutch (F1)
No.2 One–Way Clutch (F2)
Prevents outer race of F1 from turning either clockwise or counterclockwise,
thus preventing front & rear planetary sun gear from turning counterclockwise
Prevents rear planetary carrier from turning either clockwise or counterclockwise
When B2 is operating, prevents front & rear planetary sun gear from turning
counterclockwise
Prevents rear planetary carrier from turning counterclockwise
AT2–4
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
OPERATION
AT2–5
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
OPERATION
AT2–6
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
OPERATION
HYDRAULIC CONTROL SYSTEM
The hydraulic control system is composed of an oil pump, valve body, solenoid valves, accumulators,
clutches and brakes, as well as the fluid passages which connect all of these components. Based on the
hydraulic pressure created by the oil pump, the hydraulic control system governs the hydraulic pressure
acting on the torque converter clutch, clutches and brakes in accordance with the vehicle driving conditions.
There are five solenoid valves on the valve body.
The No.1 and No.2 solenoid valves are turned on and off by signals from the ECM to control the shift valves,
and change the gear shift position.
The No.3 solenoid valve is operated by signals from the ECM to engage or disengage the lock–up clutch
of the torque converter clutch.
The No.4 solenoid valve is operated by signals from the ECM to control the engagement speed and reduce
gear shift shock.
The No.5 solenoid valve is operated by signals from the ECM to regulate the line pressure to throttle pressure.
HYDRAULIC CONTROL SYSTEM
VALVE BODY
OIL PUMP
Hydr. pressure control
Fluid passage switching
CLUTCHES & BRAKES
Planetary gear sets
Torque Converter Clutch
ECM
SOLENOID VALVES
AT2–7
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
OPERATION
ELECTRONIC CONTROL SYSTEM
The electronic control system for the A340E automatic transmission provides extremely precise control of
the gear shift timing and lock–up timing in response to driving conditions as sensed by various sensors
located throughout the vehicle and in response to the engine’s running condition.
At the same time, the ECM control reduces vehicle squat when the vehicle starts out and gear shift shock.
The electronic control system is also equipped with a self diagnosis system which diagnoses malfunctions
for the vehicle to continue functioning when a malfunction occurs.
CONSTRUCTION
The electronic control system can be broadly divided onto three groups; the sensors, ECM and actuators.
SENSORS
ECM
ACTUATORS
No. 1 Vehicle Speed Sensor
No.1 Solenoid Valve
No. 2 Vehicle Speed Sensor
No.2 Solenoid Valve
O/D Direct Clutch Speed Sensor
No.3 Solenoid Valve
Crankshaft Position Sensor
No.4 Solenoid Valve
Camshaft Position Sensor No.1, No.2
Park/Neutral Position Switch
No.5 Solenoid Valve
Neutral Start Signal
Shift lever Position Signal
Main (Sub) — throttle Position Sensor
Idling Signal
Throttle Position Signal
Engine Coolant temp. Sensor
Engine Torque Control (ESA)
Igniters
Ignition Coils
A/T Fluid Temp. Sensor
Distributors
O/D Main Switch
Spark Plugs
Cruise Control ECU
Kick–Down Switch
O/D OFF Indicator Light
(Diagnostic Trouble Code
Display)
Stop Light Switch
Pattern Select Switch
TRAC ECU
AT2–8
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
SYSTEM DIAGRAM
–
OPERATION
AT2–9
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
OPERATION
AT2–10
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
OPERATION
ARRANGEMENT OF COMPONENTS
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Components
Pattern Select Switch
Crankshaft Position Sensor and Camshaft Position
Sensor
Park/Neutral Position Switch
Stop Light Switch
Throttle Position Sensor
O/D Main Switch
Cruise Control ECU
No.1 and No.2 Vehicle Speed Sensor.
Function
Selects the Power mode or the Normal mode for shift and
lock–up timing.
Detects the engine speed.
Detects the shift lever position.
Detects if the brake pedal is depressed.
Detects the throttle valve opening angle.
Prevents up–shift to the O/D gear if the O/D switch is off.
This ECU prevents the transmission from shifting into O/D
and prohibits lock–up control when the vehicle’s speed
drops below the cruise control set speed parameter.
Detects the vehicle speed. Ordinarily, transmission control
uses signals from the No.2 vehicle speed sensor, and the
No.1 vehicle speed sensor is used as a back–up.
AT2–11
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
OPERATION
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O/D Direct Clutch Speed Sensor
Detects the input shaft speed from 1st gear to 3rd gear
Engine Coolant Temp. Sensor
Detects the engine coolant temp.
ECM
Controls the engine and transmission actuators based on signals from
each sensor.
No.1 and No.2 Solenoid Valves
Control the hydraulic pressure applied to each shift valve, and control the
gear position and timing.
No.4 Solenoid Valve
(For accumulator back pressure modulation)
Controls the hydraulic pressure applied to the back chamber of the accumulator and smoothes the engagement of clutches and brakes during
shifting.
No.3 Solenoid Valve
(For lock–up control pressure modulation)
Controls the hydraulic pressure applied to the lock–up clutch and controls
lock–up timing.
No.5 Solenoid Valve
(For line pressure modulation)
Controls the line pressure.
O/D OFF Indicator Light
Blinks and warns the driver, while the O/D main switch is pushed in,
when the electronic control circuit is malfunctioning.
A/T Fluid Temp. Sensor
Detects A/T fluid temp.
AT2–12
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
PRECAUTION
PRECAUTION
PRECAUTIONS
When working with FIPG material, you must observe the following.
• Using a razor blade and gasket scraper, remove all the old packing (FIPG) material from the gasket
surfaces.
• Thoroughly clean all components to remove all the loose material.
• Clean both sealing surfaces with a non–residue solvent.
• Apply the FIPG in an approx. 1 mm (0.04 in.) wide bead along the sealing surface.
• Parts must be assembled within 10 minutes of application. Otherwise, the FIPG material must be
removed and reapplied.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section.
PREPARATION
SST (SPECIAL SERVICE TOOLS)
09032–00100
Oil Pan Seal Cutter
09308–00010
Oil Seal Puller
09309–37010
Transmission Bearing Replacer
09350–30020
TOYOTA Automatic Transmission
Tool Set
(09351–32010)
One–way Clutch Test Tool
(09351–32020)
Stator Stopper
09517–36010
Rear Axle Shaft Oil Seal
Replacer
09843–18020
Diagnosis Check Wire
09990–01000
Engine Control Computer Check
Harness “A”
AT2–13
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
09992–00094
–
PREPARATION
Automatic Transmission Oil
Pressure Gauge Set
RECOMMENDED TOOLS
09082–00050
TOYOTA Electrical Toaster Set
EQUIPMENT
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LUBRICANT
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Straight edge
Check torque converter clutch
installation.
Vernier calipers
cali ers
Check torque converter clutch
installation.
Dial indicator or dial indicator with magnetic base
Measure drive plate runout
Torque wrench
Item
Capacity
Automatic transmission fluid
Dry fill
Drain and refill
8.2
8
2 liters (8.7
(8 7 US qts,
qts 7.2
7 2 lmp.
lmp qts)
1.9 liters (2.0 US qts, 1.6 lmp. qts)
Classification
ATF TYPE T–II
T II or Equivalent
SSM (Special Service Materials)
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08826–00090
Seal Packing 128
THREE BOND 1281 or equivalent
(FIPG)
Oil pan
AT2–14
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ON–VEHICLE REPAIR
ON–VEHICLE REPAIR
EXTENSION HOUSING REAR OIL SEAL
REPLACEMENT
1.
2.
DRAIN A/T FLUID
REMOVE FRONT EXHAUST PIPE AND HEAT INSULATOR
(See page AT2–22)
3. REMOVE PROPELLER SHAFT (See page PR–7)
4. REMOVE TRANSMISSION OUTPUT FLANGE
(a) Using a hammer and chisel, loosen the staked part of the nut.
HINT: Shift the shift lever to the P position.
(b) Remove the nut.
(c) Tap the output flange with a plastic hammer to remove it and
2 washers.
(d) Using a screwdriver, remove the oil seal from the output
flange.
5.
REMOVE EXTENSION HOUSING REAR OIL SEAL
Using SST, remove the oil seal.
SST 09308–00010
6. INSTALL EXTENSION HOUSING REAR OIL SEAL
(a) Coat the lip of a new oil seal with MP grease.
(b) Using SST and a hammer, drive in the oil seal with the lip
facing downward.
SST 09309–37010
Oil seal depth from flat end:
0–0.3 mm (0–0.012 in.)
7. INSTALL TRANSMISSION OUTPUT FLANGE
(a) Using SST and a hammer, drive in a new oil seal.
SST 09517–36010
AT2–15
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ON–VEHICLE REPAIR
(b) Install the output flange and 2 washers.
(c)
Install and torque a new nut.
Torque: 123 N⋅m (1.250 kgf⋅cm, 90 ft⋅lbf)
HINT: Shift the shift lever to the P position
(d) Using a hammer and chisel, stake the nut.
8. INSTALL PROPELLER SHAFT
(See page PR–13)
9. INSTALL FRONT EXHAUST PIPE AND HEAT INSULATOR
(See page AT2–22)
10. FILL AND CHECK A/T FLUID (See page AT2–42)
A/T FLUID TEMP. SENSOR
REPLACEMENT
1.
DISCONNECT A/T FLUID TEMP. SENSOR CONNECTOR
2.
REMOVE A/T FLUID TEMP. SENSOR
(a) Remove the A/T fluid temp. sensor.
(b) Remove the O–ring from it.
3.
INSTALL A/T FLUID TEMP. SENSOR
(a) Coat a new O–ring with A/T fluid and install it to the A/T fluid
temp. sensor
(b) Install the A/T fluid temp. sensor.
Torque: 15 N⋅m (150 kgf⋅cm, 11 ft⋅lbf)
4.
CONNECT A/T FLUID TEMP. SENSOR CONNECTOR
AT2–16
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ON–VEHICLE REPAIR
NO.1 VEHICLE SPEED SENSOR ASSEMBLY
REPLACEMENT
1.
2.
(a)
(b)
(c)
3.
(a)
(b)
(c)
DISCONNECT NO.1 VEHICLE SPEED SENSOR
CONNECTOR
REMOVE NO.1 VEHICLE SPEED SENSOR ASSEMBLY
Remove the bolt and No.1 vehicle speed sensor assembly.
Remove the speedometer driven gear from the No.1 speed
sensor.
Remove the O–ring from the No.1 vehicle speed sensor.
INSTALL NO.1 VEHICLE SPEED SENSOR ASSEMBLY
Coat a new O–ring with A/T fluid and install it to the No.1
vehicle speed sensor.
Install the speedometer driven gear to the No.1 vehicle
speed sensor.
Install the No.1 vehicle speed sensor to the extension
housing and torque the bolt.
Torque: 16 N⋅m (160 kgf⋅cm, 12 ft⋅lbf)
4.
CONNECT NO.1
CONNECTOR
VEHICLE
SPEED
SENSOR
NO.2 VEHICLE SPEED SENSOR
REPLACEMENT
1.
2.
(a)
(b)
3.
(a)
(b)
DISCONNECT NO.2 VEHICLE SPEED SENSOR
CONNECTOR
REMOVE NO.2 VEHICLE SPEED SENSOR
Remove the bolt and No.2 vehicle speed sensor.
Remove the O–ring.
INSTALL NO.2 VEHICLE SPEED SENSOR
Coat a new O–ring with A/T fluid and install it to the No.2
vehicle speed sensor.
Install the No.2 vehicle speed sensor to the extension
housing and torque the bolt.
Torque: 5.4 N⋅m (55 kgf⋅cm, 48 in.⋅lbf)
4.
CONNECT NO.2
CONNECTOR
VEHICLE
SPEED
SENSOR
AT2–17
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ON–VEHICLE REPAIR
O/D DIRECT CLUTCH SPEED SENSOR
REPLACEMENT
1.
2.
(a)
(b)
3.
(a)
(b)
DISCONNECT O/D DIRECT CLUTCH SPEED SENSOR
CONNECTOR
REMOVE O/D DIRECT CLUTCH SPEED SENSOR
Remove the bolt and O/D direct clutch speed sensor.
Remove the O–ring.
INSTALL O/D DIRECT CLUTCH SPEED SENSOR
Coat a new O–ring with A/T fluid and install it to the O/D direct
clutch speed sensor.
Install the O/D direct clutch speed sensor to the transmission
case and torque the bolt.
Torque: 5.4 N⋅m (55 kgf⋅cm, 48 in.⋅lbf)
4.
CONNECT O/D DIRECT CLUTCH SPEED SENSOR
CONNECTOR
PARK/NEUTRAL POSITION SWITCH
REPLACEMENT
1.
REMOVE FRONT EXHAUST PIPE
(See page AT2–22)
2. DISCONNECT PARK/NEUTRAL POSITION SWITCH
CONNECTOR
3. REMOVE PARK/NEUTRAL POSITION SWITCH
(a) Remove the control shaft lever.
(b) Pry off the lock washer and remove the nut.
(c) Remove the bolt and pull out the park/neutral position switch.
4. INSTALL AND ADJUST PARK/NEUTRAL POSITION
SWITCH
5. CONNECT PARK/NEUTRAL POSITION SWITCH
CONNECTOR
6. INSTALL FRONT EXHAUST PIPE
(See page AT2–22)
KICK–DOWN SWITCH REPLACEMENT
1.
(a)
(b)
2.
(a)
(b)
REMOVE KICK–DOWN SWITCH
Remove the 3 bolts and kick–down switch.
Disconnect the kick–down switch connector.
INSTALL KICK–DOWN SWITCH
Connect the kick–down switch connector.
Install the kick–down switch and 3 bolts.
AT2–18
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ON–VEHICLE REPAIR
VALVE BODY REMOVAL
1.
2.
Installation is in the reverse order of removal.
INSTALLATION HINT: After installation, fill A/T fluid and
check fluid level. (See page AT2–42)
DRAIN A/T FLUID
REMOVE EXHAUST PIPE
(See page AT2–22)
3. REMOVE OIL PAN
(a) Remove the 19 bolts.
Torque: 7.4 N⋅m (75 kgf⋅cm, 85 in.⋅lbf)
(b) Install the blade of SST between the transmission case and
oil pan, cut off applied sealer.
SST 09032–00100
REMOVAL NOTICE: Be careful not to damage the oil pan
flange.
4.
EXAMINE PARTICLES IN PAN
Remove the magnets and use them to collect steel particles.
Carefully look at the foreign matter and particles in the pan
and on the magnets to anticipate the type of wear you will find
in the transmission:
Steel (magnetic)
bearing, gear and clutch plate wear
Brass (non–magnetic)
bushing wear
INSTALLATION HINT:
•
Install the 3 magnets in the indentations of the oil pan,
as shown in the illustration.
•
•
Remove any packing material and be careful not to drop
oil on the contacting surfaces of the transmission case
and oil pan.
Apply FIPG to the oil pan, as shown in the illustration.
FIPG
Part No.08826–00090, THREE BOND 1281 or equivalent
AT2–19
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
5.
–
ON–VEHICLE REPAIR
REMOVAL OIL STRAINER
Remove the 3 bolts holding the oil strainer to the valve body.
Torque: 10 N⋅m (100 kgf⋅cm, 7 ft⋅lbf)
6. REMOVE SOLENOID WIRING
(a) Remove the 2 bolts and clamp.
(b) Disconnect the 5 connectors from the solenoid valves.
7. REMOVE VALVE BODY
(a) Remove the 20 bolts.
Torque: 10 N⋅m (100 kgf⋅cm, 7 ft⋅lbf)
INSTALLATION HINT: Each bolt length is indicated in the illustration.
(b) Remove the valve body.
INSTALLATION HINT: Align the groove of the manual valve
to the pin of the lever.
AT2–20
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ON–VEHICLE REPAIR
REMOVAL NOTICE: Do not drop the check ball body and
spring.
8. REMOVE 5 SOLENOID VALVES
(a) Remove the No.1, No.2 solenoid valves.
(b) Remove the O–ring from the No.1 and No.2 solenoid valves.
INSTALLATION HINT: Replace the O–rings with new ones.
(c) Remove the lock plate, No.3 and No.4 solenoid valves.
(d) Remove the No.5 solenoid valve.
9. INSPECT VALVE BODY
Refer to A 340 E Automatic Transmission Repair Manual.
AT2–21
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ASSEMBLY REMOVAL AND INSTALLATION
ASSEMBLY REMOVAL AND
INSTALLATION
COMPONENTS
AT2–22
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ASSEMBLY REMOVAL AND INSTALLATION
TRANSMISSION REMOVAL
1.
2.
3.
Installation is in the reverse order of removal.
INSTALLATION HINT: After installation, fill A/T fluid and
check fluid level. (See page AT2–42)
REMOVE LEVEL GAUGE
REMOVE FILLER PIPE
Remove the bolt and filler pipe.
REMOVE ENGINE UNDER COVER
4. DISCONNECT OXYGEN SENSOR
(a) Remove the 2 nuts.
(b) Remove the cover and the sensor.
5.
(a)
(b)
(c)
REMOVE EXHAUST PIPE
Remove the 2 nuts and 4 bolts.
Disconnect the rings from the exhaust pipe brackets.
Remove the exhaust pipe, gasket and bracket.
Torque:
Bracket X Transmission housing:
37 N⋅m (380 kgf⋅cm, 27 ft⋅lbf)
No.2 exhaust pipe X Center exhaust pipe:
58 N⋅m (590 kgf⋅cm, 43 ft⋅lbf)
6.
REMOVE HEAT INSULATOR
Torque: 5.4 N⋅m (55 kgf⋅cm, 48 in.⋅lbf)
AT2–23
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
7.
–
ASSEMBLY REMOVAL AND INSTALLATION
REMOVE REAR CENTER FLOOR CROSSMEMBER
BRACE
Torque: 13 N⋅m (130 kgf⋅cm, 9 ft⋅lbf)
8.
REMOVE PROPELLER SHAFT
(See page PR–7)
9.
DISCONNECT SHIFT CONTROL ROD FROM SHIFT
LEVER
Torque: 13 N⋅m (130 kgf⋅cm, 9 ft⋅lbf)
INSTALLATION HINT: Inspect and adjust the park/ neutral
position switch. (See page AT2–43)
10. REMOVE SHIFT CONTROL ROD FROM PARK/NEUTRAL
POSITION SWITCH
Torque: 16 N⋅m (160 kgf⋅cm, 12 ft⋅lbf)
11. DISCONNECT THESE CONNECTORS:
•
O/D direct clutch speed sensor
•
No.1 vehicle speed sensor
•
No.2 vehicle speed sensor
•
Solenoid wire
•
Park/neutral position switch
•
A/T fluid temp. sensor
12. DISCONNECT CONNECTORS AND CABLE FROM
STARTER
(a) Remove the nut and disconnect the wire harness.
(b) Disconnect the connectors.
AT2–24
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ASSEMBLY REMOVAL AND INSTALLATION
13. REMOVE OIL COOLER PIPES
(a) Loosen the 2 oil cooler union nuts.
INSTALLATION HINT:
•
Place the 2 oil cooler pipes at installation position.
•
Tighten the 2 oil cooler union nuts to the transmission.
Torque: 34 N⋅m (350 kgf⋅cm, 25 ft⋅lbf)
(b) Remove the center and rear oil cooler pipe brackets.
Torque: 10 N⋅m (100 kgf⋅cm, 7 ft⋅lbf)
(c)
Remove the front oil cooler pipe bracket.
Torque: 10 N⋅m (100 kgf⋅cm, 7 ft⋅lbf)
(d) Disconnect the 2 oil cooler pipes.
14.
(a)
(b)
(c)
REMOVE INTERCOOLER PIPE
Remove the 2 bolts.
Loosen the 2 clamps.
Remove the pipe.
15. REMOVE TORQUE CONVERTER CLUTCH MOUNTING
BOLTS
(a) Remove the converter plate.
AT2–25
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ASSEMBLY REMOVAL AND INSTALLATION
(b) Turn the crankshaft to gain access and remove the 6 bolts.
Torque: 33 N⋅m (340 kgf⋅cm, 25 ft⋅lbf)
16. SET TRANSMISSION JACK
17. SUPPORT ENGINE
NOTICE: Use a wooden block so not to damage the engine oil pan.
18. REMOVE TRANSMISSION REAR SUPPORT
Torque: 25 N⋅m (250 kgf⋅cm, 19 ft⋅lbf)
19. REMOVE 4 WIRE HARNESS CLAMPS
Lower the transmission and remove the 4 wire harness
clamps from the retainer.
20. REMOVE STARTER AND TRANSMISSION SET BOLTS
Torque:
17 mm head bolt:
72 N⋅m (730 kgf⋅cm, 53 ft⋅lbf)
14 mm head bolt:
37 N⋅m (380 kgf⋅cm, 27 ft⋅lbf)
AT2–26
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
ASSEMBLY REMOVAL AND INSTALLATION
21. REMOVE TRANSMISSION FROM ENGINE
INSTALLATION HINT:
•
Jack up and push the transmission fully into position.
•
Make sure the engine and transmission are aligned
precisely.
•
Adjust the angle of the engine and transmission so that
the engine installation surface and transmission
surfaces are parallel.
TORQUE CONVERTER CLUTCH
INSTALLATION
1.
2.
INSTALL TORQUE CONVERTER CLUTCH IN
TRANSMISSION
CHECK TORQUE CONVERTER CLUTCH INSTALLATION
Using calipers and a straight edge, measure between the
installed surface of the transmission and the straight edge.
Clearance:
Less than 0.1 mm (0.004 in.)
TORQUE CONVERTER CLUTCH AND
DRIVE PLATE INSPECTION
1. INSPECT ONE–WAY CLUTCH
(a) Install SST into the inner race of the one–way clutch.
SST 09350–30020 (09351–32010)
(b) Install SST so that is fits in the notch of the converter clutch
hub and outer race of the one–way clutch.
SST 09350–30020 (09351–32020)
(c)
With the torque converter clutch standing on its side, the
clutch locks when turned counterclockwise, and rotates
freely and smoothly clockwise.
If necessary, clean the converter clutch and retest the clutch.
Replace the converter clutch if the clutch still fails the test.
AT2–27
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
2.
–
ASSEMBLY REMOVAL AND INSTALLATION
MEASURE DRIVE PLATE RUNOUT AND INSPECT RING
GEAR
Set up a dial indicator and measure the drive plate runout.
Maximum runout:
0.20 mm (0.0079 in.)
If runout exceeds 0.20 mm (0.0079 in.) or if the ring gear is
damaged replace the drive plate. If installing a new drive
plate, note the orientation of spacers and tighten the bolts.
Torque: 64 N⋅m (650 kgf⋅cm, 47 ft⋅lbf)
3.
MEASURE TORQUE CONVERTER CLUTCH SLEEVE
RUNOUT
(a) Temporarily mount the torque converter clutch to the drive
plate. Set up a dial indicator.
Maximum runout:
0.30 mm (0.0118 in.)
If runout exceeds 0.30 mm (0.0118 in.), try to correct by reorienting the installation of the converter clutch.
If excessive runout cannot be corrected, replace the torque
converter clutch.
HINT: Mark the position of the converter clutch to ensure correct installation.
(b) Remove the torque converter clutch.
AT2–28
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
SHIFT LOCK SYSTEM
COMPONENT PARTS LOCATION
WIRING DIAGRAM
–
SHIFT LOCK SYSTEM
AT2–29
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
SHIFT LOCK SYSTEM
ELECTRIC CONTROL COMPONENTS
INSPECTION
1.
INSPECT SHIFT LOCK CONTROL ECU
Using a voltmeter, measure the voltage at each terminal.
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Connector
Terminal
Measuring condition
ACC – E
IG SW ACC
10 – 14
IG – E
IG SW ON
10 – 14
Depress brake pedal
10 – 14
STP – E
A
(1) IG SW ACC and P position
KLS – E
SLS(+)
– SLS(
SLS(–))
P1 – P
7.5 – 11
(3) R, N, D, 2, L position (after one second)
6 – 9.5
0
(2) Depress brake pedal
8 – 13.5
(3) Depress brake pedal (after 20 seconds)
6 – 8.5
(4) R,N,D,2,L position
0
(1) IG SW ON, P position
osition and de
depress
ress brake pedal
edal
0
(2) R,N,D,2,L position
9 – 13.5
(1) IG SW ACC and P position
osition
9 – 13.5
C
P2 – P
0
(2) R, N, D, 2, L position
(1) IG SW ON and P position
B
Voltage (v)
(2) R,N,D,2,L position
0
2. INSPECT SHIFT LOCK SOLENOID
(a) Disconnect the solenoid connector.
(b) Using an ohmmeter, measure the resistance between
terminals 1 and 2.
Standard resistance:
20–28 If resistance value is not as specified, replace the solenoid.
(c)
Apply the battery positive voltage between terminals 1 and
2. At this time, confirm that the solenoid operates.
If the solenoid does not operated, replace the solenoid.
AT2–30
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
SHIFT LOCK SYSTEM
3. INSPECT KEY INTERLOCK SOLENOID
(a) Disconnect the solenoid connector.
(b) Using an ohmmeter, measure the resistance between
terminals 1 and 2.
Standard resistance:
12–17 If resistance value is not as specified, replace the solenoid.
(c)
Touch the solenoid with your finger and check that solenoid
operation can be felt when battery positive voltage is applied
intermittently to the terminals 1 and 2.
If the solenoid does not operate, replace the solenoid.
4.
INSPECT SHIFT LOCK CONTROL SWITCH
Inspect that there is continuity between each terminal.
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Shift position
Tester condition to
terminal number
Specified value
P position (Release
button is not pushed)
P–P1
Continuity
R, N, D, 2, L position
P–P2
Continuity
AT2–31
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
TROUBLESHOOTING
AT2–32
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
HOW TO PROCEED WITH TROUBLESHOOTING
Items inside
are titles of pages in this manual,
with the page number indicated in the bottom portion.
Vehicle Brought to Workshop
See the indicated pages for detailed explanations.
Customer Problem Analysis
P. AT2–33
Step [2], [5], [12], [15]:
Diagnostic steps permitting the use of the TOYOTA hand–
held tester or TOYOTA brake–out box.
Check and Clear Diagnostic Trouble Codes (Precheck)
P. AT2–34 ∼ AT2–35
Symptom Simulation
P. IN–24
Problem Symptom Confirmation
P. AT2–37
Diagnostic Trouble Code Check
Preliminary Check
P. AT2–34 ∼ AT2–35
P. AT2–42
Diagnostic Trouble Code Check
Shift Position Signal Check
P. AT2–54
P. AT2–36
Mechanical System Tests
P. AT2–44
Manual Shifting Test
P. AT2–53
Matrix Chart of Problem Symptoms – P. AT2–62
Circuit
Inspection
Chapter 1
(Electronic)
Chapter 2
(On–Vehicle)
P. AT2–64
P. AT2–66
Main Throttle Signal Check
Stop Light Signal Check
Kick–Down Signal Check
Chapter 3
(OFF–Vehicle)
P. AT2–68
Parts Inspection
P. AT2–70 ∼ AT2–115
Identification of Problem
Repair
Confirmation Test
END
AT2–33
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
CUSTOMER PROBLEM ANALYSIS
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Electronically Controlled
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Transmission Check Sheet
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Inspector’s
Name:
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Registration No.
Registration Year
Customer’s Name
/
/
Frame No.
Date Vehicle
Brought In
/
/
Date Problem
Occurred
/
How often Does
Problem Occur?
Symptoms
Check Item
Diagnostic
Trouble Code
(O/D OFF Indicator LIght)
Continuous
km
Miles
Odometer Reading
/
Intermittent (
times a day)
Vehicle does not move. (
Any position No up–shift
( 1st → 2nd 2nd → 3rd 3rd → O/D)
No down–shift
( O/D → 3rd 3nd → 2rd 2rd → 1st)
Lock–up malfuction
Shift point too high or too low.
Harsh engagement ( N → D
Slip or shudder
No Kick–down
No pattern select
Others
(
Particular position)
Lock–up
Any drive position)
)
Malfunction
Indicator Lamp
Normal
Remains ON
1st Time
Normal Code
Malfunction Code (Code
)
2nd Time
Normal Code
Malfunction Code (Code
)
AT2–34
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DIAGNOSIS SYSTEM
The automatic transmission has built–in self–diagnostic
functions. If a malfunction occurs in the system, the ECM
stores the diagnostic trouble code in memory and the O/D
OFF (Overdrive OFF) indicator light blinks to inform the driver. The diagnostic trouble code stored in memory can be read
out by the following procedure.
O/D OFF INDICATOR LIGHT INSPECTION
1.
2.
Turn the ignition switch ON.
Check if the O/D OFF indicator light lights up when the O/D
main switch is pushed out to OFF and goes off when the O/D
main switch is pushed in to ON.
HINT: If the O/D OFF indicator light does not light up or stay
on all the time, carry out the check for ”O/D OFF Indicator
Light Circuit” on page AT2–108.
DIAGNOSTIC TROUBLE CODE CHECK
1.
2.
3.
4.
Turn the ignition switch ON, but do not start the engine.
Push in the O/D main switch to ON.
HINT: Warning and diagnostic trouble codes can be read only
when the O/D main switch is ON. If it is OFF, the O/D OFF indicator light up will light continuously and will not blink.
Using SST, connect terminals TE1 and E1 of the DLC 1 or
DLC2.
SST 09843–18020
Read the diagnostic trouble code indicated by the number of
times the O/D OFF indicator light blinks
(See next page).
HINT: If the system is operating normally, the light will blink
2 times per second.
AT2–35
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
The trouble code is indicated as shown in the illustration at
left (Diagnostic trouble code ”42” is shown as an example).
HINT: When 2 or more trouble codes are stored in memory,
the lower–numbered code is displayed first.
If no diagnostic trouble code is output, or if a diagnostic
trouble code is output even though no diagnostic trouble
code output operation is performed, check the TE1 terminal
circuit on page AT2–113
ECM DATA MONITOR USING TOYOTA
HAND–HELD TESTER
1.
2.
Hook up the TOYOTA hand–held tester to the DLC2.
Monitor the ECM data by following the prompts on the tester
screen.
HINT: TOYOTA hand–held tester has a ”Snapshot” function
which records the monitored data.
Please refer to the TOYOTA hand–held tester operator’s
manual.
CANCELING DIAGNOSTIC TROUBLE
CODE
After repair of the trouble area, the diagnostic trouble code
retained in the ECM memory must be canceled out by removing the EFI No.1 fuse for 10 seconds or more, with the ignition
switch OFF.
Check that the normal code is output after connecting the
fuse.
ECM TERMINALS STANDARD VALUE
1.
2.
ECM TERMINAL VALUES
MEASUREMENT BY USING TOYOTA BREAK–OUT –BOX
AND TOYOTA HAND–HELD TESTER
Hook up the TOYOTA break–out–box and TOYOTA
hand–held tester to the vehicle.
Read the ECM input/output values by following the prompts
on the tester screen.
HINT: TOYOTA hand–held tester has ”Snapshot” function.
This record the measured values and is effective in the diagnosis of intermittent problems.
Please refer to the TOYOTA hand–held tester/ TOYOTA
break–out–box operator’s manual for further details.
AT2–36
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
CHECK TERMINAL TT OUTPUT
VOLTAGE
When a voltmeter is connected to the DLC2, the following
items can be checked.
1. Throttle position sensor signal
2. Brake signal
3. Shift position signal
1. VOLTMETER CONNECTION
Connect the positive (+) probe of the voltmeter to terminal TT
and the negative (–) probe to terminal E1 of the DLC2.
HINT: If a voltmeter with small internal resistance is used, the
correct voltage will not be indicated, so use a voltmeter with
an internal resistance of at least 10 k/V.
2. TURN IGNITION SWITCH TO ON (DO NOT START THE
ENGINE)
3. CHECK THROTTLE POSITION SENSOR SIGNAL
Check if the voltage changes from approx. 0 V to approx. 8
V when the accelerator pedal is gradually depressed from the
fully closed position.
4. CHECK BRAKE SIGNAL (LOCK–UP CUT SIGNAL)
(a) Open the throttle valve fully to apply approx. 8 V to terminal
TT.
(b) In this condition, check terminal TT voltage when the brake
pedal is depressed and released.
TT terminal voltage:
0 V (When brake pedal is depressed)
8 V (When brake pedal is released)
5.
6.
START ENGINE
CHECK SHIFT POSITION SIGNAL
(VEHICLE SPEED ABOVE 10 km/h, 6 mph)
Check up–shifting together with terminal TT voltage.
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Gear Position
Terminal TT output voltage
1st Gear
0V
2nd Gear
2V
3rd Gear
4V
3rd Lock–up
5V
O/D
6V
O/D Lock–up
7V
HINT: Check for light shocks from up–shifting and for
changes in the tachometer.
If terminal TT Output voltage check cannot be done, do the
check of TT terminal circuit on page AT2–115.
AT2–37
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
PROBLEM SYMPTOM CONFIRMATION
Taking into consideration the results of the customer problem analysis, try to reproduce the symptoms of
the trouble. If the problem is that the transmission does not up–shift, does not down–shift, or the shift point
is too high or too low, conduct the following road test to confirm the automatic shift schedule and simulate
the problem symptoms.
ROAD TEST
NOTICE: Do the test at normal A/T fluid operating temp.
50–80°C (122–176°F).
1. D POSITION TEST (NORM PATTERN)
Shift into the D position and keep the accelerator pedal
constant at the full throttle valve opening position, and check
the following points:
(a) Check up–shift operation.
Check that 1–2, 2–3 and 3–O/D up–shift takes place, at the
shift point shown in the automatic shift schedule.
(See page AT2–116)
HINT:
(1) O/D Gear Up–shift Prohibition Control.
•
Coolant temp. is 60°C (140°F) or less.
•
If there is a 10 km/h (6 mph) difference between the set
cruise control speed and vehicle speed.
•
O/D main switch is pushed ON.
‘(During O/D OFF, indicator light lights up.)
(2) O/D Gear Lock–up Prohibition Control.
•
Brake pedal is depressed.
•
Coolant temp. is 60°C (140°F) or less.
(b) Check for shift shock and slip.
Check for shock and slip at the 1–2, 2–3, and 3–O/ D up–
shifts.
(c)
Check for abnormal noise and vibration.
Run at the D position lock–up or O/D gear and check for abnormal noise and vibration.
HINT: The check for the cause of abnormal noise and vibration must be performed very thoroughly as it could also be
due to loss of balance in the, torque converter clutch, etc.
AT2–38
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
(d) Check kick–down operation.
While running in the D position, 2nd, 3rd and O/D gears,
check to see that the possible kick–down vehicle speed limits
for 2 → 1, 3 → 2 and O/D → 3 kick–downs conform to those
indicated on the automatic shift schedule.
(See page AT2–116)
(e) Check for abnormal shock and slip at kick–down.
(f)
Check the lock–up mechanism.
(1) Drive in D position, O/D gear, at a steady speed (lock–up
ON) of about 59 km/h (37 mph).
(2) Lightly depress the accelerator pedal and check that the
RPM does not change abruptly.
If there is a big jump in RPM, there is no lock–up.
2.
D POSITION TEST (MANU PATTERN)
Shift into the D position and hold the accelerator pedal
constant at the full throttle valve opening position, and check
the following points:
(a) Check up–shift operation.
2–3 and 3–O/D up shifts should take place, and shift points
should conform to those shown in the automatic shift schedule.
(See page AT2–116)
HINT:
•
O/D up–shift or lock–up will not occur when the engine
coolant temp. is below 60°C (140°F) and speed is under
60 km/h (37 mph), or if there is a 10 km/h (6 mph)
difference between the set cruise control speed.
•
3rd up–shift or lock–up will not occur when engine
coolant temp. is 35°C (95°F) and speed is under 40 km/h
(25 mph).
(b) Check for shift shock and slip.
In the same manner, check the shock slip at the 2 → 3 and
3 → O/D up–shifts.
AT2–39
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
(c)
–
TROUBLESHOOTING
Check for abnormal noise and vibration.
Run at the D position lock–up or O/D gear and check for abnormal noise and vibration.
HINT: The check for the cause of abnormal noise and vibration must be made with extreme care as it could also be due
to loss of balance in the propeller shaft, differential, torque
converter clutch, etc.
(d) Check kick–down operation.
While running in the D position, 2nd, 3rd and O/D gears,
check to see that the possible kick–down vehicle speed limits
for 3 → 2 and O/D → 3 kick–downs conform to those indicated
on the automatic shift schedule.
(See page AT2–116)
(e) Check for abnormal shock slip at kick–down.
(f)
Check the lock–up mechanism.
(1) Drive in D position, O/D gear, at a steady speed (lock–up
ON) of about 195 km/h (121 mph).
(2) Lightly depress the accelerator pedal and check that the
engine RPM does not change abruptly.
If there is big jump in the engine RPM there is no lock –up.
3.
2 POSITION TEST (NORM PATTERN)
Shift into the 2 position and, while driving with the accelerator
pedal held constantly at the full throttle valve opening position, check on the following points:
(a) Check up–shift operation.
Check to see that the 1 → 2 up–shift takes place and that the
shift point conforms to the automatic shift schedule.
(See page AT2–116)
HINT: There is no O/D up–shift and lock–up in the 2 position.
(b) Check engine braking.
While running in the 2 position and 2nd gear, release the accelerator pedal and check the engine braking effect.
AT2–40
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
(c)
–
TROUBLESHOOTING
Check for abnormal noise at acceleration and deceleration,
and for shock at up–shift and down–shift.
4.
2 POSITION TEST (MANU PATTERN)
Shift into the 2 position and while driving with the accelerator
pedal held constantly at the full throttle valve opening position, push in one of the pattern selectors and check these
points:
(a) Check no up–shift.
While running in the 2 position, check to see that there is no
up–shift to 3rd gear.
(b) Check engine braking.
While running in the 2 position and 2nd gear, release the accelerator pedal and check the engine braking effect.
(c)
5.
Check for abnormal noise during acceleration and
deceleration.
L POSITION TEST
Shift into the L position and while driving with the accelerator
pedal held constantly at the full throttle valve opening position, check these points:
(a) Check no up–shift.
While running in the L position, check that there is no up–shift
to 2nd gear.
AT2–41
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
(b) Check engine braking
While running in the L position, release the accelerator pedal
and check the engine braking effect.
(c)
Check for abnormal noise during acceleration and
deceleration.
6.
R POSITION TEST
Shift into the R position and while starting at full throttle,
check for slipping.
CAUTION: Before conducting this test ensure that the
test area is free from personnel and obstruction.
7.
P POSITION TEST
Stop the vehicle on a gradient (more than 5°) and after shifting into the P position, release the parking brake.
Then check to see that the parking lock pawl holds the vehicle in place.
AT2–42
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
PRELIMINARY CHECK
1.
(a)
(b)
(c)
(d)
(e)
CHECK FLUID LEVEL
HINT:
•
Drive the vehicle so that the engine and transmission
are at normal operating temperature.
Fluid temp.: 70–80°C (158–176°F)
•
Only use the COOL position on the dipstick as a rough
reference when the fluid is replaced or the engine does
not run.
Park the vehicle on a level surface and set the parking brake.
With the engine idling and the brake pedal depressed, shift
the shift lever into all positions from P to L position and return
to P position.
Pull out the oil level gauge and wipe it clean.
Push it back fully into the pipe.
Pull it out and check that the fluid level is in the HOT position.
If the level is at the low side, add fluid.
Fluid type:
ATF TYPE T–II or Equivalent
NOTICE: Do not overfill
2. CHECK FLUID CONDITION
If the fluid smells burnt or is black, replace it.
3. REPLACE TRANSMISSION FLUID
(a) Remove the drain plug and drain the fluid.
(b) Reinstall the drain plug securely.
(c) With the engine OFF, add new fluid through the oil filler pipe.
Fluid type:
ATF TYPE T–II or Equivalent
Capacity:
Dry fill:
8.2 liters (8.7 US qts, 7.2 Imp. qts)
Drain and refill: 1.9 liters (2.0 US qts, 1.6 Imp. qts)
(d) Start the engine and shift the shift lever into all positions from
P to L position and then shift into P position.
(e) With the engine idling, check the fluid level. Add fluid up to the
COOL level on the dipstick.
(f) Check the fluid level at the normal operating temperature
70–80°C (158–176°F) and add as necessary.
NOTICE: Do not overfill.
4. CHECK FLUID LEAKS
Check for leaks in the transmission.
If there are leaks, it is necessary to repair or replace O –rings,
seal packings, oil seals, plugs or other parts.
AT2–43
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
5.
(a)
(b)
(c)
(d)
(e)
(f)
–
TROUBLESHOOTING
INSPECT AND ADJUST SHIFT LEVER POSITION
When shifting the shift lever from the N position to other positions, check that the lever can be shifted smoothly and accurately to each position and that the position indicator correctly
indicates the position.
If the indicator is not aligned with the correct position, carry
out the following adjustment procedures:
Loosen the nut on the control shaft lever.
Push the control shaft lever fully rearward.
Return the control shaft lever 2 notches to N position.
Set the shift lever to N position.
While holding the shift lever lightly toward the R position side,
tighten the shift lever nut.
Start the engine and make sure that the vehicle moves
forward when shifting the lever from the N to D position and
reverses when shifting it to the R position.
6.
INSPECT AND ADJUST PARK/NEUTRAL POSITION
SWITCH
Check that the engine can be started with the shift lever only
in the N or P position, but not in other positions.
If not as stated above, carry out these adjustment procedures:
(a) Loosen the park/neutral position switch bolt and set the shift
lever to the N position.
(b) Align the groove and neutral basic line.
(c) Hold in position and tighten the bolt.
Torque: 12 N⋅m (125 kgf⋅cm, 9 ft⋅lbf)
7.
For continuity inspection of the park/neutral position switch,
see page AT2–101.
INSPECT IDLE SPEED
Idle speed:
650±50 rpm
(In N position and air conditioner OFF)
AT2–44
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
MECHANICAL SYSTEM TESTS
STALL TEST
The object of this test is to check the overall performance of the transmission and engine by measuring
the stall speeds in the D and R positions.
NOTICE:
•
•
•
•
Do the test at normal operating fluid temp. 50–80°C (122–176°F).
Do not continuously run this test longer than 5 seconds.
To ensure safety, conduct this test in a wide, clear, level area which provides good traction.
The stall test should always be carried out in pairs. One technician should observe the conditions of
wheels or wheel stoppers outside the vehicle while the other is doing the test.
MEASURE STALL SPEED
(a) Chock the 4 wheels.
(b) Fully apply the parking brake.
(c) Connect a tachometer to the engine.
(d) Start the engine and check idle.
(e) Keep you foot pressed firmly on the brake pedal.
(f) Shift into the D position. Fully depress the accelerator pedal.
Quickly read the stall speed.
Stall speed:
2,600±150 rpm
(g) Do the same test in R position.
Quickly read the stall speed.
Stall speed:
2,600±150 rpm
AT2–45
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
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EVALUATION
Problem
Possible cause
(a) Stall speed low in D and R positions
positions.
Engine output may be insufficient.
Stator one–way clutch is operating properly
HINT:
If more than 600 rpm below the specified value, the
torque converter clutch could be faulty.
(b) Stall speed high in D position
Line pressure too low.
Forward clutch sli
slipping
ing
No.2 one–way clutch not operating properly
O/D one–way clutch not operating properly
(c) Stall speed high in R position
position.
Line pressure too low
ing
Direct clutch sli
slipping
First and reverse brake slipping
O/D clutch slipping
(d) Stall speed high in D and R positions
positions.
Line pressure too low
Improper fluid level
O/D one–way clutch not operating properly
AT2–46
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
TIME LAG TEST
When the shift lever is shifted while the engine is idling, there will be a certain time lapse or lag before the
shock can be felt. This is used for checking the condition of the O/D direct clutch, forward clutch, direct
clutch, and first and reverse brake.
NOTICE:
•
Do the test at normal operating fluid temp. 50–80°C (122–176°F).
•
Be sure to allow 1 minute interval between tests.
•
Take 3 measurements and take the average value.
MEASURE TIME LAG
(a) Fully apply the parking brake
(b) Start the engine and check idle speed.
Idle speed:
650±50 rpm (In N position and air conditioner OFF)
(c)
Shift the shift lever from N to D position. Using a stop watch, measure the time it takes from shifting the
lever until the shock is felt.
In same manner, measure the time lag for N → R.
Time lag:
N → D Less than 1.2 seconds
N → R Less than 1.5 seconds
AT2–47
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
EVALUATION
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If N → D or N → R time lag is longer than specified:
Problem
Possible cause
N→D time lag is longer
Line pressure too low
Forward clutch worn
O/D one–way clutch not operating properly
N→R time lag is longer
Line pressure too low
Direct clutch worn
First and reverse brake worn
O/D clutch worn
AT2–48
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
HYDRAULIC TEST
MEASURE LINE PRESSURE
NOTICE:
•
Do the test at normal operating fluid temp. 50–80°C (122–176°F)
•
The line pressure test should always be carried out in pairs. One technician should observe
the conditions of wheels or wheel stoppers outside the vehicle while the other is doing the test.
•
Be careful to prevent the oil pressure gauge hose from interfering with the exhaust pipe.
(a) Warm up the transmission fluid.
(b) Remove the test plug on the transmission case left side and connect the oil pressure gauge (SST).
SST 09992–00094 (Oil pressure gauge)
HINT: Connecting the oil pressure gauge will be made easier by moving LH side heat insulator side.
(c)
(d)
(e)
(f)
(g)
(h)
(i)
Chock the 4 wheels.
Fully apply the parking brake.
Start the engine and check idling speed.
Keep your left foot pressed firmly on the brake pedal and shift into D position.
Measure the line pressure when the engine is idling.
Fully depress the accelerator. Quickly read the highest line pressure when engine speed reaches stall
speed.
NOTICE: Release the accelerator pedal and stop test if the wheels begin to rotate before the engine
speed reaches specified stall speed.
In the same manner, do the test in R position.
AT2–49
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
SPECIFIED LINE PRESSURE
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Line pressure:
Condition
D position
kPa (kgf/cm2 psi)
R position
kPa (kgf/cm2, psi)
Idling
471–530 (4.8–5.4,
(4 8–5 4 68–77)
686–785 (7.0–8.0,
(7 0–8 0 100–114)
Stall
1 334–1 470 (13.6–15.0,
1,334–1,470
(13 6–15 0 193–213)
1 697–2 030 (17.3–20.7,
1,697–2,030
(17 3–20 7 246–294)
If the measured pressures are not up to specified values, check the No.5 solenoid valve and retest.
EVALUATION
Problem
Possible cause
If the measured values at all positions are higher
higher.
Throttle cable out of adjustment
Throttle valve defective
Regulator valve defective
If the measured values at all positions are lower
lower.
Throttle cable out of adjustment
Throttle valve defective
Regulator valve defective
Oil pump defective
O/D direct clutch defective
If pressure is low in the D position only
only.
D position circuit fluid leakage
g
Forward clutch defective
If pressure is low in the R position only
only.
R position circuit fluid leakage
Direct clutch defective
First and reverse brake defective
AT2–50
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
MEASURE ACCUMULATOR BACK PRESSURE
NOTICE:
•
Do the test at normal operating fluid temp. 50–80°C (122–176°F).
•
Be careful to prevent the oil pressure gauge hose from interfering with the exhaust pipe.
(a) Warm up the transmission fluid.
(b) Remove the test plug on the transmission case rear right side and connect the oil pressure gauge
(SST)
SST 09992–00094 (Oil pressure gauge)
HINT: Connecting the oil pressure gauge will be made easier by moving the RH side head insulator aside.
(c) Remove the passenger side floor carpet and ECM protector.
(d) Connect the SST (check harness A) between ECM and connector of vehicle wire harness.
SST: 09990–01000
(e) Install one test lead probe into the terminal SLN of the ECM wire harness side connector and take care
not to ground the other test lead probe.
HINT: Prepare test leads which are connected with an approximately 8 W light bulb.
AT2–51
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
(f)
(g)
(h)
(i)
(j)
–
TROUBLESHOOTING
Fully apply the parking brake and chock the 4 wheels.
Start the engine and check idling speed.
Keep your left foot pressed firmly on the brake pedal and shift into D position.
Measure the accumulator back pressure.
With the conditions the same as in (h), ground the other probe or the test lead which has one end inserted
into the terminal SLN of the ECM harness side connector, then measure the accumulator back pressure
again.
AT2–52
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
SPECIFIED ACCUMULATOR BACK PRESSURE (D position, Idling)
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EVALUATION
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Condition of ECM terminal SLN
Not ground
Ground
Accumulator back pressure
kPa (kgf/cm2, psi)
177–255
(1.8–2.6, 26–37)
0
Problem
Possible cause
The accumulator back pressure is not as specified
(high or low) when the terminal SLN is not ground.
Throttle cable out of adjustment
Throttle valve defective
Solenoid modulator valve defective
SLN solenoid valve defective
Accumulator control valve defective
The accumulator back pressure does not become
0 kgf/cm2 when the terminal SLN is grounded.
SLN solenoid valve defective
AT2–53
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
MANUAL SHIFTING TEST
1.
2.
HINT: With this test, it can be determined whether the trouble
is within the electrical circuit or is a mechanical problem in the
transmission.
DISCONNECT SOLENOID WIRE
INSPECT MANUAL DRIVING OPERATION
Check that the shift and gear positions correspond with the
table below.
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3.
4.
Shift Position
Gear Position
D
O/D
2
3rd
L
1st
R
Reverse
P
Pawl Lock
HINT: If the L, 2 and D position gear positions are difficult to
distinguish, do the following road test.
•
While driving, shift through the L, 2 and D positions.
Check that the gear change corresponds to the shift
position.
If any abnormality is found in the above test, the problem is
in the transmission itself.
CONNECT SOLENOID WIRE
CANCEL OUT DIAGNOSTIC TROUBLE CODE
(See page AT2–35)
AT2–54
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DIAGNOSTIC TROUBLE CODE CHART
If a diagnostic trouble code is displayed during the diagnostic trouble code check, check the circuit listed
for that code in the table below and proceed to the page given.
DTC.
No.
38
42
46
61
62
63
64
Blinking
Pattern
Circuit
Diagnostic Trouble Code Detection Condition
A/T fluid
temp.
sensor
Either (a) or (b) are detected for 0.5 sec. or more:
(a) Temp. sensor resistance less than 79 (b) After the engine has been operating for 15 minutes or
more, the resistance at the temp. sensor is more
than 156 k
No.1 vehicle
speed sensor
All conditions below are detected for 4 secs. or more:
(2 trip detection logic)*3
(a) No. No.1 vehicle speed sensor signal in 16 pulses of No.2
vehicle speed sensor signal
(b) Vehicle speed: 9 km/h (5.6 mph) or more for or more
(c) Park/neutral position switch: OFF (Other than P or N
position)
No.4 solenoid
valve
All conditions below are detected for 1 sec. or more:
(2 trip detection logic)*3
(a) ECM output duty signal to No.4 solenoid in 90% or higher
duty ratio
(b) Current to No.4 solenoid: 330±100 mA or less
No.2 vehicle
speed sensor
All conditions below are detected:
(2 trip detection logic)*3
(a) No. No.2 vehicle speed sensor signal in 4 pulses of No.1
vehicle speed sensor signal
(b) Vehicle speed: 9 km/h (5.6 mph) or more for 4 secs. or
more
(c) Park/neutral position switch: OFF (Other than P or N
position)
No.1 solenoid
valve
(1) Solenoid resistance of 8 or less is detected (*) times or
more when NO.1 solenoid is energized.
(2) Solenoid resistance of 100 k or more is detected (*) 8 times
or more when No.1 solenoid is not energized.
(*) If the above failure are detected less than 8 times, the ECM
memorizes the malfunction code but the O/D OFF indicator
light does not blink.
No.2 solenoid
valve
(1) Solenoid resistance of 8 or less is detected (*) times or
more when NO.2 solenoid is energized.
(2) Solenoid resistance of 100 k or more is detected (*) 8 times
or more when No.2 solenoid is not energized.
(*) If the above failure are detected less than 8 times, the ECM
memorizes the malfunction code but the O/D OFF indicator
light does not blink.
No.3 solenoid
circuit
All conditions below are detected for 1 sec. or more:
(2 trip detection logic)*3
(a) ECM output duty signal to No.3 solenoid in 90% or higher
duty ratio
(b) Current to No.3 solenoid: 450±100 mA or less
AT2–55
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
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ÑÑÑÑÑÑÑ
ÑÑÑÑ
Trouble Area
O/D OFF Indicator
Light *1 Blinks
Harness or connector between A/T fluid temp. sensor and ECM
A/T fluid temp. sensor
ECM
Memory
*2
See
Page
AT2–70
Harness or connector between No.1 vehicle speed sensor and
ECM
No.1 vehicle speed sensor
Telltale light RH
ECM
AT2–72
Harness or connector between No.4 solenoid valve and ECM
No.4 solenoid valve
ECM
AT2–75
Harness or connector between No.2 vehicle speed sensor and
ECM
No.2 vehicle speed sensor
ECM
AT2–79
Harness or connector between No.1 solenoid valve and ECM
No.1 solenoid valve
ECM
AT2–82
Harness or connector between No.2 solenoid valve and ECM
No.2 solenoid valve
ECM
AT2–82
Harness or connector between No.3 solenoid valve and ECM
No.3 solenoid valve
ECM
X
AT2 85
AT2–85
AT2–56
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
DTC.
No.
Blinking
Pattern
Circuit
–
TROUBLESHOOTING
Diagnostic Trouble Code Detection Condition
67
O/D direct
clutch speed
sensor
All conditions below are detected for 4 secs. or more:
(2 trip detection logic)*3
(a) Gear change not being performed.
(b) Gear position: 1st, 2nd or 3rd
(c) T/M input shaft rpm: Less than 300 rpm
(d) T/M output shaft rpm: 1000 rpm or more
77
No.5 solenoid
circuit
Any of condition below are detected:
(2 trip detection logic)*3
(a) SLT– terminal: 0 V or 5 V for 1 sec. or more.
TRAC ECU
circuit
All conditions below are detected for 5 secs. or more:
(a) No.1 vehicle speed sensor: 9 km/h (5.6 mph) or more
(b) Mirror check of TRAC ECU input signal is abnormal.
(c) TRAC ECU input signal does not inform to ECM.
(d) TRAC ECU input signal order is abnormal.
89
AT2–57
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
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ÑÑÑÑ
Trouble Area
O/D OFF Indicator
Light *1 Blinks
Memory
*2
See
Page
Harness or connector between O/D direct clutch speed sensor
and ECM
O/D direct clutch speed sensor
ECM
AT2–89
Harness or connector between No.5 solenoid valve and
ECM
No.5 solenoid valve
ECM
Harness or connector between TRAC ECU and ECM.
TRAC ECU
AT2–92
AT2–95
AT2–58
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
*1:
*2:
*3:
–
TROUBLESHOOTING
”O” mark means ”O/D OFF” light blinks once every 2 seconds.
”X” mark means ”O/D OFF” light never blinks.
”O” marks means the ECM memorizes the malfunction code if the ECM detects the diagnostic trouble code
detection condition.
This indicates items for which ”2 trip detection logic” is used. With this logic, when a logic malfunction is
first detected, the malfunction is temporarily stored in the ECM memory. If the same case is detected again
during the second drive test, this second detection causes the O/D OFF indicator light to blink. The 2 trip
repeats the same mode twice. (However, the IG switch must be turned OFF between the 1st trip and 2nd
trip.)
HINT:
•
If the malfunction returns to normal while a malfunction warning is being output, the O/D OFF indicator
light stops blinking and goes off.
However, the diagnostic trouble code is retained in memory until it is cleared from memory.
•
If the diagnosis system outputs a diagnostic trouble code even though the O/D OFF indicator was not
blinking, there is intermittent trouble. Check all the connections in the circuits corresponding to that
code.
•
Codes 42, 62, 63 and 64 are limited to short or open circuits in the electrical system comprised of the
solenoids, wire harnesses, and connectors. The ECM is unable to detect mechanical trouble (sticking,
for example) in the solenoid valves.
•
If the speed sensors No.1 and No.2 happen to fail simultaneously, the ECM will neither alert the driver
by blinking the O/D OFF indicator nor record any diagnostic trouble code. It will, however, decide that
the vehicle can be driven only in 1st and none of the other gears, shifting upward will then be
prohibited.
AT2–59
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
Memo
–
TROUBLESHOOTING
AT2–60
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
STANDARD VALUE OF ECM TERMINAL
ÑÑÑÑÑ
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Ñ
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Ñ
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Ñ
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ÑÑÑÑÑ
Ñ
ÑÑÑÑÑÑÑ
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Ñ
ÑÑÑÑ
Ñ
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ÑÑÑ
Ñ
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ÑÑÑÑÑÑÑÑ
Terminals
Symbols
B13 – B69
B14 – B69
SLN–E1
SLU–E1
B76 – B69
NSW–E1
B1 – B21
B3 – B23
NCO–NCO
SP2–SP2
B10 – B69
S1 – E1
B9 – B69
S2 – E1
B43 – B65
VTA1 – E2
B64 – B65
A2 – B65
A3 – B69
IDL1 – E2
SP1 – E2
KD – E1
A7 – B69
R – E1
A9 – B69
2 – E1
A10 – B69
L – E1
A12 – B69
OD1 – E1
Wiring
Condition
Color
Y–G ↔ BR Ignition switch ON
LG–B ↔ BR Ignition switch ON
Shift Lever: P or N position
B–W ↔ BR IG ON Shift Lever: Other than
P or N position
L↔Y
IG OFF, Disconnect ECM connector
G↔R
IG OFF
IG OFF
WR ↔ BR Vehicle driving in 2nd gear position
IG ON
IG OFF
Vehicle driving in 2nd or 3rd position
RL ↔ BR
IG ON
Accel Pedal is not depressed
Accel.
Y ↔ BR
IG ON
Accel. Pedal is fully depressed
Accel Pedal is not depressed
Accel.
R ↔ BR
IG ON Accel. Pedal is depressed
Ignition switch ON
turn one rear wheel slowly
Kickdown SW: OFF
(Accel. pedal is not depressed)
Y ↔ BR
IG ON
Kickdown SW: ON
(Accel. pedal is fully depressed)
Shift position: R position
RB ↔ BR
IG ON Shift position: Other than R
position
Shift position: 2 position
LG–R ↔ BR IG ON Shift position: Other than 2
position
Shift position: L position
G–B ↔ BR IG ON Shift position: Other than L
position
BR–B ↔ BR Ignition switch ON
P ↔ BR
(*A= (E10), B= (E9))
Standard
Value
10 – 14 V
10 – 14 V
Below 1 V
10 – 14 V
560 – 680 560 – 680 10 – 16 10 – 14 V
10 – 14 V
10 – 16 10 – 14 V
Below 0.5 V
Below 1.5
15V
3.0 – 5.5 V
Below 1 V
10 – 14 V
Repeat 0–8 V
or above
10 – 14 V
Below 0.5 V
10 – 14 V
Below 0.5 V
10 – 14 V
Below 0.5 V
10 – 14 V
Below 0.5 V
4–6V
AT2–61
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
ÑÑÑÑÑÑÑ
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ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑ
ÑÑÑÑÑÑÑ
ÑÑÑÑÑÑ
ÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑ
(*A= (E10), B= (E9))
Terminals
Symbols
Wiring
Color
A14 – B69
TRC – E1
O ↔ BR
Ignition switch ON
10 – 14 V
A13 – B69
TRC– E1
W–R ↔ BR
Ignition switch ON
10 – 14 V
B12 – B31
SLT–SLT
LG–R ↔ W–G
Ignition switch ON
10 – 14 V
A18 – B69
M – E1
G Y ↔ BR
G–Y
IG ON
A28 – B69
OD2 – E1
V G ↔ BR
V–G
IG ON
A27 – B69
EFI – E1
B ↔ BR
Ignition switch ON
10 – 14 V
A26 – B69
EFI – E1
W ↔ BR
Ignition switch ON
10 – 14 V
Condition
Standard
Value
Pattern select SW: MANU
10 – 14 V
Pattern select SW: NORM
Below 1 V
O/D main SW: ON
10 – 14 V
O/D main SW: OFF
Below 0.5 V
AT2–62
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
MATRIX CHART OF PROBLEM SYMPTOMS
1.
2.
If a normal code is displayed during the diagnostic trouble code check but the trouble still occurs, check
the circuits for each symptom in the order given in the charts on the following pages and proceed to the
page given for troubleshooting.
The Matrix Chart is divided into 3 chapters.
Chapter 1: Electronic Circuit Matrix Chart
Chapter 2: On–vehicle Repair Matrix Chart
Chapter 3: Off–vehicle Repair Matrix Chart
When troubleshooting, check Chapter 1 first. If instructions are given in Chapter 1 to proceed to Chapter
2 or 3, proceed as instructed.
If the instruction ”Proceed to next circuit inspection shown on matrix chart” is given in the flow chart for each
circuit, proceed to the circuit with the next highest number in the table to continue the check.
If the trouble still occurs even though there are no abnormalities in any of the other circuits, then check or
replace the ECM.
AT2–63
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–Memo–
–
TROUBLESHOOTING
AT2–64
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
AT2–85
AT2–89
AT2–97
No.3 solenoid
circuit
O/D direct clutch
speed sensor circuit
(Sub)–throttle
position sensor circuit
AT2–82
circuit
AT2–79
No.2 Vehicle speed
sensor circuit
No.1, No.2 solenoid
AT2–75
Symptom
No.4 solenoid
circuit
Suspect Area
AT2–72
See Page
No.1 Vehicle speed
sensor circuit
Chapter 1. Electronic Circuit
Vehicle does not move in any forward position and reverse
position
Vehicle does not move in particular position or positions
1st → 2nd
No up–shift
2nd → 3rd
3rd → O/D
O/D → 3rd
No down–shift
3rd → 2nd
2nd → 1st
No lock–up
No lock–up off
Shift point too high or too low
Up–shifts to 2nd while in L position
Up–shifts to 3rd while in L position
Up–shifts to O/D from 3rd while O/D switch is OFF
Up–shifts to O/D from 3rd while engine is cold
N→D
Harsh engagement
Lock–up
Any driving position
Forward and reverse
Slip or Shudder
Any particular position
No engine braking
Poor acceleration
No kick–down
*No pattern select
Large shift shock or Engine stalls when starting off or stopping.
* The automatic transmission in not shifted into the manual mode when the automatic transmission fluid
temperature is too high.
AT2–66
AT2–68
AT2–92
BR–128
AT2–70
OFF–Vehicle repair
matrix chart
No.5 solenoid
circuit
TRAC ECU
A/T fluid temp.
sensor circuit
AT2–111
O/D cancel signal
circuit
On–Vehicle repair
matrix chart
AT2–108
O/D switch O/D OFF
indicator light circuit
AT2–60
AT2–105
Pattern select switch
circuit
ECM
AT2–103
Stop light switch
circuit
EG–312
AT2–99
Kick–down switch
circuit
Engine coolant temp.
sensor circuit
AT2–101
Park/neutral position
switch
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
AT2–65
AT2–66
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Chapter 2. On–Vehicle Repair
Vehicle does not move in any forward position and reverse
Vehicle does not move in R position
Vehicle does not move in any particular position or positions
(except R position)
1st → 2nd
No up–shift
2nd → 3rd
3rd → O/D
O/D → 3rd
No down–shift
3rd → 2nd
2nd → 1st
No lock–up or No lock–up off
N→D
Lock–up
N→R
N→L
1st → 2nd (D position)
Harsh engagement
1st → 2nd (2 position)
1st → 2nd → 3rd → O/D
2nd → 3rd
3rd → O/D
O/D → 3rd
Forward and Reverse
Slip or Shudder
Particular position
No engine braking
1st
2nd
No kick–down
2–3 shift valve
1–2 shift valve
Reverse control
valve
Manual valve
Oil strainer
Symptom
Transmission
control rod
Suspect Area
Parking lock pawl
See Page
AT2–43
( : A340E, A340F, A340H AUTOMATIC TRANSMISSION Repair Manual Pub. No.RM391U)
OFF–Vehicle repair
matrix chart
Pressure relief
valve
C0 accumulator
B0 accumulator
2nd coast
modulator valve
B2 accumulator
Low coast
modulator valve
–
C2 accumulator
Solenoid relay
valve
Orifice control
valve
C1 accumulator
modulator valve
Solenoid
Accumulator
control valve
Lock–up relay
valve
Lock–up control
valve
3–4 shift valve
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
TROUBLESHOOTING
AT2–67
AT2–68
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Chapter 3. Off–Vehicle Repair
( : A340E, A340F, A340H AUTOMATIC TRANSMISSION Repair Manual Pub. No.RM391U)
Vehicle does not move in any forward position and reverse position
Vehicle does not move in R position
D, 2 and L position
Vehicle does not
D and 2 positions
move in:
2 position
L position
1st → 2nd
No up–shift
2nd → 3rd
3rd → O/D
No down–shift
2nd → 1st
No lock–up or No lock–up off
N→D
N→R
Harsh
engagement
2nd → 3rd
3rd → O/D
O/D → 3rd
Lock–up
Forward & Reverse (After warm–up)_
Forward & Reverse (Just after engine starts)
R position
Slip or Shudder
R position
2nd
3rd
O/D
1st ∼ 3rd
No engine
braking
1st
2nd
All positions
O/D
Other than O/D
Poor acceleration
Other than 2nd
1st an 2nd
1st and R position
R position
Engine stalls when starting off or stopping
1st and reverse
brake (B3)
Torque
converter clutch
gear unit
O/D planetry
clutch (Co)
O/D direct
Symptom
O/D brake (Bo)
Suspect Area
O/D one–way
clutch (Fo)
See Page
No.1 one–way
clutch (F1)
2nd brake (B2)
No.2 one–way
clutch (F2)
Forward clutch
(C1)
Front and rear
planetary gear unit
Direct clutch
(C2)
2nd coast
brake (B1)
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
AT2–69
AT2–70
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
CIRCUIT INSPECTION
DTC 38 A T Fluid Temperature Sensor Circuit
CIRCUIT DESCRIPTION
The fluid temp. sensor converts fluid temp. into resistance values which is input into the ECM.
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38
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DTC No.
Diagnostic Trouble Code Detection Condition
Either (a) or (b) are detected for 0.5 sec. or
more.
(a) Temp. sensor resistance less 79 (b) After the engine has been operating for 15
minutes or more, the resistance at the
temp. sensor is more than 156 k WIRING DIAGRAM
Trouble Area
Harness or connector between A/T fluid
temp. sensor and ECM
A/T fluid temp. sensor
ECM
AT2–71
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check A/T fluid temp. sensor.
Check sensor resistance
Remove A/T fluid temp. sensor.
Measure resistance between terminals of A/T fluid
temp. sensor at 20°C (68°F) and 110°C (230°F).
Resistance:
20°C (68°F): Approx. 12.08 k
110°C (230°F): Approx. 0.78 k
20°C (68°F) and 110°C (230°F).
Replace A/T fluid temp. sensor.
Check harness and connector between A/T fluid temp. sensor and ECM
(See page IN–30).
Repair or replace harness or connector.
Check and replace ECM.
AT2–72
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DTC 42 No.1 Vehicle Speed Sensor Signal Circuit
CIRCUIT DESCRIPTION
The No. 1 vehicle speed sensor outputs a 4–pulse signal for every revolution of the rotor shaft, which
is rotated by the transmission output shaft via the driven gear. After this signal is converted into a more
precise rectangular waveform by the waveform shaping circuit inside the combination meter, it is then
transmitted to the engine control module. The ECM determines the vehicle speed based on the frequency of these pulse signals.
Transmission
Output Shaft
No.1 Vehicle
Speed Sensor
Telltale Light
RH
Driven Gear
No.1 Vehicle Speed Sensor
DTC No.
42
Diagnostic Trouble Code Detection Condition
All conditions below are detected for 4 secs. or
more. (2 trips detection logic)*
(a) No No.1 vehicle speed sensor signal in 16
pulses of No.2 vehicle speed sensor signal.
(b) Vehicle speed: 9 km/h (5.6 mph) or more
(c) Park/neutral position switch:
OFF (Other than P or N position)
Trouble Area
No. 1 vehicle Speed sensor
Telltale light RH
Harness or connector between No. 1 vehicle
speed sensor and ECM
ECM
* See page AT2–58
HINT: In test mode, diagnostic trouble code 42 is output when vehicle speed is 5 km/h (3 mph) or
below.
<Reference>
Waveform between terminals SP1 and E2 when vehicle speed is approx. 20 km/h (12 mph).
HINT: As the vehicle’s speed increases, the signal output from
SP1 increases.
AT2–73
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
WIRING DIAGRAM
INSPECTION PROCEDURE
Check voltage between terminal SP1 of ECM connector and body ground.
1. Shift the shift lever to N position
2. Jack up one of the rear wheels.
3. Connect the Check Harness A.
See page EG–510)
(1) Disconnect power steering ECU connector
and cruise control ECU connector.
(5) Turn ignition switch ON.
Measure voltage between terminal SP1 of ECM
connector and body ground when the wheel is
turned slowly.
Voltage is generated intermittently.
Check and replace ECM.
Check operation of odometer and trip meter (telltale light RH
(See page BE–48)).
Repair or replace harness or connector between
ECM and telltale light RH.
Go to
AT2–74
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Check operation of No.1 vehicle speed sensor (see page BE–46).
Repair or replace harness or connector between
telltale light RH and No.1 vehicle speed sensor.
Replace No.1 vehicle speed sensor.
AT2–75
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DTC 46 No.4 Solenoid Valve Circuit (For Accumulator Back
Pressure Modulation)
CIRCUIT DESCRIPTION
The No.4 solenoid valve controls the hydraulic pressure acting on
the brakes and clutches of the planetary gear units when gears are
shifted and performs smooth gear shifting.
The ECM determines optimum operating pressure according to
the signals from the throttle position sensor, vehicle speed sensor
and O/D clutch speed sensor and controls the volume of current
flow to the solenoid valve.
The amount of electric current to the solenoid is controlled by the
(*) duty ratio of ECM output signals, causing momentary change
to the hydraulic pressure acting on the clutches during gear shifting. When the duty ratio is high, the hydraulic pressure acting on
the clutches is now.
(*) Duty Ratio
The duty ratio is the ratio of the period of continuity in one cycle.
For example, if A is the period of continuity in one cycle, and B is
Duty Ratio =
Lock–up
operation
pressure
Current flow to
solenoid
the period of non–continuity, then
100 (%)
DTC No.
Diagnostic Trouble Code Detection Condition
46
All conditions below are detected for 1 sec. or
more. (2 trips detection logic)*
(a) ECM outputs duty signal to No.4 solenoid in
90% or higher duty ratio.
(b) Current to No.4 solenoid:
330 ± 100 mA or less
(O/D OFF indicator light doesn’t blink)
Trouble Area
No. 4 solenoid valve
Harness or connector between No.4
solenoid valve and ECM
ECM
* See page AT2–58
<Reference>
Waveform between terminals SLN
and E1 when engine is idling.
Waveform between terminals SLN
and E1 during shift change.
AT2–76
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
WIRING DIAGRAM
–
TROUBLESHOOTING
AT2–77
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check No.4 solenoid valve.
Check solenoid resistance
1. Jack up the vehicle.
2. Remove oil pan.
3. Disconnect the connector
Measure resistance between terminal 1 and 2 of
solenoid connector.
Resistance: 5.1 — 5.5 Check solenoid operation
Connect positive lead with an 8 — 10 W bulb to
terminal 1 of solenoid connector and negative lead to terminal 2, then check the movement of the
valve.
When battery positive
voltage is applied.
Valve moves in
direction in illustration
at left.
When battery positive
voltage is cut off.
Valve moves in
direction in illustration
at left.
<Reference>
Check solenoid’s operation
1. Prepare a variable power supply.
2. Connect positive lead of the variable power
supply to terminal 1 of solenoid connector and
negative lead to terminal 2.
3. Check the movement of the valve when the
voltage is gradually increased. (A current
greater than 1A should not be supplied.)
As the voltage is increased, the valve should move
slowly in the
direction.
4.
Check the movement of the valve when the volt
age is cut off.
The valve should return in the
Replace No.4 solenoid valve.
Go to step [2].
direction.
AT2–78
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Check harness and connector between battery and No.4 solenoid valve,
No.4 solenoid valve and ECM (See page IN–30).
Repair or replace harness or connector.
Proceed to next circuit inspection shown on matrix
chart (See page AT2–64). However, when diagnostic trouble code 46 is displayed, check and replace
ECM.
AT2–79
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DTC 61 No.2 Vehicle Speed Sensor Circuit
CIRCUIT DESCRIPTION
The No. 2 vehicle speed sensor detects the rotation speed of the transmission output shaft and sends
signals to the ECM. The ECM determines the vehicle speed based on these signals. An AC voltage
is generated in the No.2 vehicle speed sensor coil as the rotor mounted on the output shaft rotates,
and this voltage is sent to the ECM.
The gear shift point and lock–up timing are controlled by the ECM based on the signals from this vehicle
speed sensor and the throttle position sensor signal.
If the No.2 vehicle speed sensor malfunctions, the ECM uses input signals from the No.1 vehicle speed
sensor as a back–up signal.
No.2 Vehicle Speed Sensor
Generated
Waveform
No.2 Vehicle Speed Sensor
DTC No.
Diagnostic Trouble Detection Condition
61
All conditions below are detected. (2 trips
detection logic)*
(a) No No.2 vehicle speed sensor signal in 4
pulses of No. 1 vehicle speed sensor
signal.
(b) Vehicle speed: 9 km/h (5.6 mph) or more
for 4 secs. or more.
(c) Park/neutral position switch:
OFF (Other than P or N position)
Trouble Area
No. 2 vehicle speed sensor
Harness or connector between No.2
vehicle speed sensor and ECM
ECM
*: See page AT2–58
<Reference>
Waveform between terminals SP2+ and SP2– when vehicle speed is approx. 60 km/h (37 mph).
5 V/division
2 msec./division
AT2–80
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
WIRING DIAGRAM
INSPECTION PROCEDURE
Check resistance between terminals SP2+ and SP2– of ECM connector.
Connect the Check Harness A to the ECM. (See
page EG–510).
Check resistance between terminals SP2+ and
SP2 – of ECM.
Resistance: 560 — 680 Proceed to next circuit inspection shown on matrix
chart (See page AT2–64).
Go to step [2].
AT2–81
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Check No.2 vehicle speed sensor.
Remove No.2 vehicle speed sensor from transmission (See page AT2–16).
Measure resistance between terminals 1 and 2 of
No.2 vehicle speed sensor.
Resistance: 560 — 680 <Reference>
Check the speed sensor’s function
Check voltage between terminals 1 and 2 of the
speed sensor when a magnet is put close to the
front end of the speed sensor then taken away
quickly.
Voltage is generated intermittently.
The voltage generated is extremely low.
Replace No.2 vehicle speed sensor.
Check and repair harness and connector between
ECM and No.2 vehicle speed sensor (See page
IN–30).
AT2–82
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DTC 62 63 No.1 No.2 Solenoid Valve Circuit
CIRCUIT DESCRIPTION
Shifting from 1st to O/D is done in combination with ON and OFF of the No.1 and No.2 solenoid valves
controlled by ECM. If an open or short circuit occurs in either of the solenoid valves, the ECM controls the
remaining normal solenoid to allow the vehicle to be operated smoothly (Fail safe function).
Fail Safe Function
If either of the solenoid valve circuits develops a short or an open, the ECM turns the other solenoid ON
and OFF to shift the gear positions shown in the table below. If both solenoids malfunction, the hydraulic
control is not made electronically and can only be operated manually.
Manual shifting, as shown in the following table must be done (In the case of a short circuit, the ECM stops
sending current to the short circuited solenoid).
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NO 1 SOLENOID
MALFUNCTIONING
NORMAL
PosiP
i
tion
Solenoid
valve
Gear
No.1 No.2
D
2 (S)
( )
L
Solenoid
valve
No.1
No.2
NO 2 SOLENOID
MALFUNCTIONING
Solenoid valve
Gear
No.1
No.2
BOTH SOLENOIDS
MALFUNCTIONING
Gear
Gear when shift selector
is manually operated
ON
OFF
1st
X
ON
3rd
ON
X
1st
O/D
ON
ON
2nd
X
ON
3rd
OFF
X
O/D
O/D
OFF
ON
3rd
X
ON
3rd
OFF
X
O/D
O/D
OFF OFF
O/D
X
OFF
O/D
OFF
X
O/D
O/D
ON
OFF
1st
X
ON
3rd
ON
X
1st
3rd
ON
ON
2nd
X
ON
3rd
OFF
X
3rd
3rd
OFF
ON
3rd
X
ON
3rd
OFF
X
3rd
3rd
ON
OFF
1st
X
OFF
1st
ON
X
1st
1st
ON
ON
2nd
X
ON
2nd
ON
X
1st
1st
X: Malfunctions
Check the No.1 solenoid when diagnostic trouble code 62 is output and check the No.2 solenoid when
diagnostic trouble code 63 is output.
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DTC No.
Diagnostic Trouble Code Detection Condition
Trouble Area
(a) Solenoid resistance is 8 or lower (short circuit) when Solenoid valve
solenoid is energized.
Harness or connector between sole–
(b) Solenoid resistance is 100 k or higher (open circuit)
noid and ECM
when solenoid is not energized.
ECM
The ECM checks for an open or short circuit in the No.1
and No.2 solenoid circuit when it changes gear position.
The ECM records DTC 62 or 63 if condition (a) or (b) is
detected once, but it does not blink the O/D OFF indicator
light.
After the ECM detects the condition (a) or (b) continuously
8 times or more, it causes the O/D OFF indicator light to
blink until condition (a) or (b) disappears.
After that, if the ECM detects condition (a) or (b) one, it
starts blinking the O/D OFF indicator light again.
AT2–83
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
WIRING DIAGRAM
–
TROUBLESHOOTING
AT2–84
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check No.1 No.2 solenoid valves.
Electrical Check
1. Jack up the vehicle.
2. Remove the oil pan.
3. Disconnect the solenoid connector.
Measure resistance between the solenoid connector and solenoid body.
Resistance: 10 — 16 Connect positive lead to terminal of solenoid connector, negative lead to solenoid body.
The solenoid makes an operating noise.
Mechanical Check
1. Remove the oil pan.
2. Remove the No.1 and No.2 solenoid valves.
1. Applying 490 kPa (5 kgf/cm2, 71 psi) of
compressed air, check that the solenoid valves
do not leak air.
2. When battery positive voltage is supplied
to the solenoid valves, check that the sole–
noid valves open.
Replace solenoid valve.
Check harness and connector between ECM and
and solenoid
solenoid (See
(See page
page IN–30).
IN–30).
Repair or replace harness or connector.
Proceed to next circuit inspection shown on matrix
chart (See page AT2–64). However, when diagnostic
trouble code 62 or 63 is displayed, check and replace
ECM.
AT2–85
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DTC 64 No. 3 Solenoid Valve Circuit (For Lock–up Control Pressure
Modulation)
CIRCUIT DESCRIPTION
The No.3 solenoid valve is provided for lock–up operations. The
lock–up operation pressure is controlled by the linear solenoid for
smooth engagement.
The amount of current flow to the solenoid is controlled by the duty
ratio (See page AT2–75) of ECM output signal. The higher the duty
ratio becomes, the higher the lock–up hydraulic pressure becomes
during the lock–up operation. If the malfunction occurs in this circuit and diagnostic trouble code 64 is stored in memory, but the
O/D OFF indicator light does not blink.
DTC No.
Diagnostic Code Detection Condition
64
All conditions below are detected for 1 sec. or
more. (2 trips detection logic)*
(a) ECM outputs duty signal to No.3 solenoid in
90% or higher duty ratio.
(b) Current to No.3 solenoid:
450 ± 100 mA or less.
Trouble Area
No.3 solenoid valve
Harness or connector between No.3
solenoid valve and ECM
ECM
*: See page AT2–58
<Reference>
Waveform between terminals SLN–
and E1 when engine is idling.
Waveform between terminals SLN–
and E1 during shift change.
AT2–86
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
WIRING DIAGRAM
–
TROUBLESHOOTING
AT2–87
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check No.3 solenoid valve.
Check solenoid resistance
1. Jack up the vehicle.
2. Remove the oil pan.
3. Disconnect the solenoid connector
Measure resistance between terminal 1 and 2 of
the solenoid connector.
Resistance: 3.5 — 3.9 Check solenoid operation
Connect positive lead with an 8 — 10 W bulb to
terminal 1 of solenoid connector and negative lead to terminal 2, then check the movement of the
valve.
When battery positive
voltage is applied.
When battery positive
voltage is cut off.
Valve moves in
direction in illustration
at left.
Valve moves in
direction in illustration
at left.
<Reference>
Check solenoid’s operation
1. Prepare a variable power supply.
2. Connect positive lead of the variable power
supply to terminal 1 of solenoid connector and
negative lead to terminal 2.
3. Check the movement of the valve when the
voltage is gradually increased. (A current
greater than 1A should not be supplied.)
As the voltage is increased, the valve should move
slowly in the
direction.
4.
Check the movement of the valve when the volt–
age is cut off.
The valve should return in the
direction.
Replace No.3 solenoid valve.
Go to step
AT2–88
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Check harness and connector between battery and No.3 solenoid valve, No.3
solenoid valve and ECM (See page IN–30).
Repair or replace harness or connector.
Proceed to next circuit inspection shown on matrix
chart (See page AT2–64). However, when diagnostic
trouble code 64 is displayed, check and replace
ECM.
AT2–89
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DTC 67 O D Direct Clutch Speed Sensor Circuit
CIRCUIT DESCRIPTION
O/D Direct Clutch Drum
O/D Direct Clutch
Speed Sensor
DTC No.
67
This sensor detects the rotation speed of the O/D input shaft
from the rotation of the O/D direct clutch drum.
Its construction is the same as that of the No.2 vehicle speed
sensor (See page AT2–79).
By comparing the O/D direct clutch speed signal and the No.2
vehicle speed sensor signal, the ECM detects the shift timing
of the gears and appropriately controls the engine torque and
hydraulic pressure in response to various conditions, thus
performing smooth gear shift.
Trouble Area
Diagnostic Trouble Code Detection Condition
All conditions below are detected for 4 secs. or
more.
(2 trips detection logic)*
(a) Gear position: 1st, 2nd or 3rd
(b) T/M input shaft rpm: 1000 rpm or more
(c) T/M output shaft rpm: Less than 300 rpm
(d) NSW OFF (other than P or N position)
O/D direct clutch speed sensor
Harness or connector between O/D direct
clutch speed sensor and ECM
ECM
*: See page AT2–58
<Reference>
Waveform between terminals NCO+ and NCO– during engine idling.
AT2–90
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
WIRING DIAGRAM
INSPECTION PROCEDURE
Check resistance between terminals NCO+ and NCO– of ECM.
Connect the Check Harness A to the ECM (See
page EG–510).
Check Resistance between terminals NCO+ and
NCO– of ECM.
Resistance: 560 — 680 Proceed to next circuit inspection shown on matrix chart (See page AT2–64). However, when diagnostic trouble code 67 is displayed, check and replace ECM.
G to
AT2–91
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Check O/D direct clutch speed sensor.
Remove the O/D direct clutch speed sensor from
the transmission (See page AT2–17).
Measure resistance between the terminals 1 and 2
of the O/D direct clutch speed sensor.
Resistance: 560 — 680 <Reference>
Check the speed sensor function
Check voltage between the terminals 1 and 2 of
the speed sensor when a magnet is put close to
the front end of the speed sensor then taken away
quickly.
Voltage is generated intermittently.
The voltage generated is extremely low.
Replace O/D direct clutch speed sensor.
Check and repair harness and connector between
ECM and O/D direct clutch speed sensor (See page
IN–30).
AT2–92
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DTC 77 No.5 Solenoid Valve Circuit (For Line Pressure Modulation)
CIRCUIT DESCRIPTION
The throttle pressure that is applied to the primary regulator valve (which modulates line pressure) causes the
No.5 solenoid valve, under electronic control, to precisely and minutely modulate and generate line pressure
according to the accelerator pedal effort, or engine power output detected. This reduces the fluctuation of line
pressure and provides smooth shifting characteristics.
Upon receiving the throttle valve opening angle signal, ECM controls the line pressure by sending a predetermined duty ratio to the No.5 solenoid valve located in the valve body, activating the solenoid valve, modulating
the line pressure, generating throttle pressure.
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DTC No.
Diagnostic Trouble Code Detection Condition
Any of condition below are detected. (2 trip
detection logic)
SLT– terminal: 0 V or 5 V for 1 sec. or more.
Trouble Area
No.5 solenoid valve
Harness or connector between No.5
solenoid valve and ECM
ECM
AT2–93
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check No.5 solenoid valve.
Check solenoid resistance
1. Jack up the vehicle.
2. Remove the oil pan.
1.
2.
Disconnect the solenoid connector.
Measure resistance between terminals 1 and 2
of solenoid connector.
Resistance: 3.6 — 4.0 Check solenoid operation
Connect positive lead with an 8 — 10 W bulb to
terminal 1 of solenoid connector and negative lead to terminal 2, then check the movement of the
valve.
When battery positive
voltage is applied.
When battery positive
voltage is cut off.
Valve moves in
direction in illustration
at left.
Valve moves in
direction in illustration
at left.
<Reference>
Check solenoid operation
1. Prepare a variable power supply.
2. Connect positive lead of the variable power
supply to terminal 1 of solenoid connector and
negative lead to terminal 2.
3. Check the movement of the valve when the
voltage is gradually increased. (A current
greater than 1A should not be supplied.)
As the voltage is increased, the valve should move
slowly in the
direction.
4.
Check the movement of the valve when the volt–
age is cut off.
The valve should return in the
direction.
Replace No.5 solenoid valve.
Go to step
AT2–94
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Check harness and connector between battery and No.5 solenoid valve, No.5
solenoid valve and ECM (See page IN–30).
Repair or replace harness or connector.
Proceed to next circuit inspection shown on matrix
chart (See page AT2–64). However, when diagnostic
trouble code 77 is displayed, check and replace
ECM.
AT2–95
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
DTC 89 TRAC ECU Circuit
CIRCUIT DESCRIPTION
When the transmission is in the shift up or stall condition, the TRAC ECU sends a sub–throttle valve close
signal to the sub–throttle actuator.
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DTC No.
Diagnostic Code Detection Condition
All conditions below are detected 5 secs. or
more.
(a) No.1 vehicle speed sensor: 9 km/h (5.6 mph)
or more
(b) Mirror check of TRAC ECU input signal is
abnormal.
(c) TRAC ECU input signal does not inform to
ECM.
(d) TRAC ECU input signal order is abnormal.
Trouble Area
Harness or connector between TRAC ECU
and ECM
TRAC ECU
AT2–96
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check harness and connector between ECM and TRAC ECU (See page
IN–30).
Repair or replace harness or connector.
Check diagnostic trouble code of TRAC ECU (See page BR–128).
Substitute another TRAC ECU.
If the same code is still output after the diagnostic trouble code is deleted, check the contact
condition of each connection.
If the connections are normal, the TRAC ECU may be defective.
AT2–97
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Throttle Position Sensor Circuit
CIRCUIT DESCRIPTION
The throttle position sensor detects the throttle valve opening angle and sends signals to ECM.
AT2–98
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check main throttle position signal.
Turn ignition switch ON.
Check voltage at the terminal TT of the DLC2 while
gradually depressing the accelerator pedal from
the fully closed position to the fully opened position.
Voltage changes from 0 V to 8 V by stages.
(Close) Throttle Valve Opening Angle (Open)
Do not depress the brake pedal during the test. The
voltage will stay at 0 V if depressed.
Proceed to next circuit inspection shown on
matrix chart (See page AT2–64).
Check main (sub)–throttle position sensor. (see page EG–292, 293)
Replace throttle position sensor.
Check harness and connector between ECM and Main (Sub)–throttle
position sensor (See page IN–30).
Repair or replace harness or connector.
Check and replace ECM.
AT2–99
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Kick–down Switch Circuit
CIRCUIT DESCRIPTION
The kick–down switch is turned on when the accelerator pedal
is depressed beyond the full throttle opening and sends signals
to ECM.
When the kick–down switch is turned on, the ECM controls
gear shifting according to the programmed shift diagrams.
If a short circuit develops in the kick–down switch, the ECM disregards the kick–down signals and controls shifting at the normal shift points.
AT2–100
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check voltage between terminal KD of ECM connector and body ground.
1.
2.
Connect the Check Harness A to the ECM
(See page EG–510).
Turn ignition switch ON.
Measure voltage between terminal KD of ECM connector and body ground when accel. pedal is fully
depressed or not.
Accel. pedal
Voltage
Fully depressed
(Kick–down SW is ON)
Below 0.5 V
Released
(Kick–down SW is OFF)
10 — 14 V
Proceed to next circuit inspection shown on
matrix chart (See page AT2–64).
Check kick–down switch.
1.
2.
Disconnect kick–down switch connector.
Measure resistance between terminals 1 and
2 of kick–down switch connector when kick–
down switch is on and off.
Kick–down switch
Resistance
ON
0 (continuity)
OFF
(open)
Replace kick–down switch.
Check harness and connector between ECM and kick–down switch, kick–
down switch and body ground (See page IN–30).
Repair or replace harness or connector.
Check and replace ECM.
AT2–101
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Park Neutral Position Switch Circuit
CIRCUIT DESCRIPTION
The park/neutral position switch detects the shift lever position and sends signal to ECM.
The ECM receives signals (R, NSW, 2 and L) from the park/neutral position switch. When the signal is not
sent to the ECM from the park/neutral position switch, the ECM judges that the shift lever is in the D position.
AT2–102
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check voltage between terminals R, NSW, 2, L of ECM connector and body
ground.
1.
2.
Connect the Check Harness A to the ECM
(See page EG–510).
Turn ignition switch ON.
Measure voltage between terminals R, NSW, 2, L of
the Check Harness A connector and body ground
when the shift lever is positioned to the following
ranges.
*: The voltage will drop slightly due to lighting up of
the back up light.
Proceed to next circuit inspection shown on
matrix chart (See page AT2–64).
Check park/neutral position switch.
1.
2.
Jack up the vehicle.
Remove the park/neutral position switch (See
page AT2–17).
Check continuity between each terminal shown below when the shift lever is positioned to each position.
Replace the park/neutral position switch.
Check harness and connector between battery and park/neutral position
switch, park/neutral position switch and ECM (See page IN–30).
Repair or replace harness and connector.
Check and replace ECM.
AT2–103
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Stop Light Switch Circuit
CIRCUIT DESCRIPTION
The purpose of this circuit is to prevent the engine from stalling, while driving in lock–up condition, when
brakes are suddenly applied.
When the brake pedal is operated, this switch sends a signal to the ECM. Then the ECM cancels operation
of the lock–up clutch while braking is in progress.
AT2–104
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check operation of stop light.
Check if the stop lights go on and off normally when the brake pedal is depressed and released.
Check and repair stop light circuit.
Check stop light signal.
1.
2.
3.
4.
Connect the voltmeter to the terminals TT and
E1 of the DLC2.
Turn ignition switch ON.
Fully depress the accelerator pedal until the
voltmeter indicates 8 V and hold it.
Depress and release the brake pedal and
check the voltage.
Brake pedal
Voltage
Depressed
0V
Released
8V
Proceed to next circuit inspection shown on
matrix chart (See page AT2–64).
Check harness and connector between ECM and stop light switch (See page
IN–30).
Repair or replace harness or connector.
Check and replace ECM.
AT2–105
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Pattern Select Switch Circuit
CIRCUIT DESCRIPTION
The ECM memory contains the shift programs for the NORMAL and MANUAL patterns, 2 position, L position and the lock–up patterns. Following the programs corresponding to the signals from the pattern select
switch, the park/neutral position switch and other various sensors the ECM switches the solenoid valves
ON and OFF, thereby controlling the transmission gear change and the lock–up clutch operation.
AT2–106
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check A/T fluid temp. sensor (See page AT2–70).
Replaces A/T fluid temp. sensor.
Check if A/T fluid temp. is too hot.
1.
2.
Turn ignition switch ON.
Check “MANU” mode indicator light when pattern select switch is pushed in to ON.
”MANU” mode indicator light comes on and stays
on.
If the A/T fluid temp. becomes too hot, the “MANU”
mode indicator light flashes for several seconds and
goes off. The driving mode then automatically
changes from Manual mode to the Normal mode.
Wait until the A/T fluid temp. is reduced.
Check voltage between terminal M of ECM connector and body ground.
1.
2.
Connect the Check Harness A to the ECM
(See page EG–510).
Turn ignition switch ON.
Measure voltage between the terminal M of the
ECM connector and body ground when the pattern
select switch is set to the MANU (MANUAL) position and NORM (NORMAL) position.
Pattern select switch
Voltage
MANU
10 — 14 V
NORM
Below 1 V
The ECM uses the Normal pattern signal if the
Manual signal is not input.
Proceed to next circuit inspection shown on
matrix chart (See page AT2–64).
Go to step.
AT2–107
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Check pattern select switch.
Disconnect the pattern select switch connector.
Measure resistance between the terminals 3 and 4
of the pattern select switch connector when the select switch is set to MANU and NORM positions.
Pattern
Resistance
MANU
0 (continuity)
NORM
(open)
Replace pattern select switch.
Check harness and connector between battery and pattern select switch,
pattern select switch and ECM (See page IN–30).
Repair or replace harness or connector.
Check and replace ECM.
AT2–108
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
O D Main Switch & O D OFF Indicator Light Circuit
CIRCUIT DESCRIPTION
The O/D main switch contacts go off when the switch is pushed in and comes on when it is pushed out.
In O/D main switch OFF position the O/D OFF indicator lights up, and the ECM prohibits shifting to overdrive. The ECM also causes the O/D OFF indicator light to blink when a malfunction is detected. In this
case, connecting the terminals in the DLC2 or DLC1 can display the malfunction code.
(*) O/D Main Switch
Contacts go off with button pushed in.
Contacts go on with button pushed out.
AT2–109
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
O/D OFF indicator light does not light up.
Check operation of O/D main switch.
1.
2.
Turn ignition switch ON.
Check “O/D OFF” indicator light when O/D button is pushed in to ON.
“O/D OFF” indicator light goes off.
3. Check “O/D OFF” indicator light when O/D
button is pushed again, to OFF.
“O/D OFF” indicator light lights up.
If the “O/D OFF” indicator light blinks when the O/D
button is pushed in to ON, a malfunction is occurring
in the system.
Check the diagnostic trouble code.
Go to step
Check voltage between terminal OD2 of ECM connector and body ground.
1.
2.
Connect the Check Harness A to the ECM
(See page EG–510).
Turn ignition switch ON.
Check voltage between terminal OD2 of ECM and
body ground.
O/D Main Switch
Voltage
OFF
Below 0.5 V
ON
10 ~ 14 V
Proceed to next circuit inspection shown on
matrix chart (See page AT2–64).
Check harness and connector between O/D off indicator light and ECM (See
page IN–30).
Repair or replaces harness or connector.
Check and replace ECM.
AT2–110
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Check O/D main switch.
1.
2.
Disconnect O/D main switch connector.
Measure resistance between terminals 2 and
4 of O/D main switch connector.
O/D Main Switch
Resistance
ON
OFF
(open)
0 (continuity)
Replace O/D main switch.
Check and replace combination meter. (See
combination meter troubleshooting section on
page BE–41).
O/D OFF indicator light remains ON
Check O/D main switch.
Replace O/D main switch.
Check harness and connector between O/D off indicator light and ECM (See
page IN–30).
Repair or replace harness or connector.
Check and replace ECM.
O/D OFF indicator light blinks
Do diagnostic trouble code check (See page AT2–34).
AT2–111
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
O D Cancel Signal Circuit
CIRCUIT DESCRIPTION
While driving with cruise control activated, in order to minimize gear shifting and provide smooth up–hill
cruising, overdrive may be prohibited temporarily in some conditions.
The Cruise Control ECU sends O/D cut signals to the ECM as necessary and the ECM cancels overdrive
shifting until these signals are discontinued.
(For details see the cruise control section, page BE–162)
INSPECTION PROCEDURE
Check voltage between terminal OD1 of ECM connector and body ground.
Connect the Check Harness A to the ECM
Turn ignition switch ON.
Measure voltage between terminal OD1 of ECM
connector and body ground.
Voltage: 4 — 6 V
Proceed to next circuit inspection shown on matrix chart (See page AT2–64).
AT2–112
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
Check voltage between terminal OD of Cruise Control ECU harness side
connector and body ground.
1.
2.
Disconnect Cruise Control ECU connector.
Turn ignition switch ON.
Measure voltage between terminal OD of Cruise
Control ECU harness side connector and body
ground.
Voltage: 4 — 6 V
Check and replace Cruise Control ECU.
Check harness and connector between Cruise Control ECU and ECM (See
page IN–30).
Repair or replace harness or connector.
Check and replace ECM.
AT2–113
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
TE1 Terminal Circuit
CIRCUIT DESCRIPTION
ECM displays diagnostic trouble codes using the O/D OFF indicator light when terminals TE1 and E1 of
the DLC2 or DLC1 are connected.
AT2–114
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
INSPECTION PROCEDURE
Check voltage between terminal TE1 and E1 of DLC2 or DLC1.
Measure voltage between terminals TE1 and E1 of
DLC2 or DLC1.
Voltage: 4 — 6 V
Proceed to next circuit inspection shown on matrix chart (See page AT2–64).
Check harness and connector between ECM and DLC2, DLC1 and body
ground (See page IN–30).
Repair or replace harness or connector.
Check and replace ECM.
AT2–115
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
TROUBLESHOOTING
TT Terminal Circuit
CIRCUIT DESCRIPTION
Checks of ECM input and output signals related to the throttle position sensor, brakes, shift position and
other circuits can be performed by measuring the voltages at terminal TT of the DLC2
INSPECTION PROCEDURE
Check harness and connector between ECM and DLC2, DLC1 and body
ground (See page IN–30).
Repair or replace harness or connector.
Check and replace ECM.
AT2–116
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
SERVICE SPECIFICATIONS
SERVICE SPECIFICATIONS
SERVICE DATA
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ÑÑÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑÑÑ
MANU Mode
ÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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ÑÑÑÑÑÑÑÑÑÑÑ
ÑÑÑÑÑÑÑÑÑÑÑÑÑÑ
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Line pressure (wheel locked)
Engine stall revolution
Engine idling
D position
R position
AT stall
D position
R position
D and R position
471–530 kPa 4.8–5.4 kgf/cm2 68–77 psi
686–785 kPa 7.0–8.0 kgf/cm2 100–114 psi
1,334–1,470 kPa
1,697–2,030 kPa
N → D position
N → R positionposition
Time lag
13.6–15.0 kgf/cm2
17.3–20.7 kgf/cm2
2,600 ± 150 rpm
Less than 1.2 seconds
Less than 1.5 seconds
Engine idle speed
(In N position and air conditioner OFF)
Drive plate runout
Torque converter clutch runout
193–213 psi
246–294 psi
650 ± 50 rpm
Max.
Max.
0.20 mm
0.1 mm
0.0079 in.
0.004 in.
NORM Mode
Shift position
Shifting point
Throttle valve fully opened
D
Throttle valve fully closed
Throttle valve fully opened
2
L
Throttle valve fully opened
Shift position
Shifting point
Throttle valve fully opened
D
Throttle valve fully closed
2
L
Throttle valve fully opened
Throttle valve fully opened
*2→1
Vehicle speed km/h (mph)
62–72 (39–45)
120–129 (75–80)
187–201 (116–125)
181–195 (112–121)
109–117 (68–73)
41–47 (25–29)
29–34 (18–25)
23–28 (14–17)
62–72 (39–45)
135–147 (84–91)
41–47 (25–29)
60–66 (37–41)
2→3
3→O/D
O/D→3
3→2
3→O/D
O/D→3
*3→2
*2→1
Vehicle speed km/h (mph)
122–131 (76–81)
194–207 (121–129)
187–201 (116–125)
109–117 (68–73)
181–195 (112–121)
23–28 (14–17)
135–147 (84–91)
60–66 (37–41)
1→2
2→3
3→O/D
O/D→3
3→2
2→1
3→O/D
O/D→3
1→2
*3→2
2→1
* Shift points is the same when the throttle valve is closed as when the throttle valve is opened.
AT2–117
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
SERVICE SPECIFICATIONS
LOCK–UP POINT
NORM Mode
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D position Throttle valve opening 5%
Lock–up ON
km/h (mph)
Lock–up OFF
km/h (mph)
3rd Gear
60–66 (37–41)
50–56 (31–35)
O/D Gear
53–59 (33–37)
50–56 (31–35)
MANU Mode
D position Throttle valve opening 5%
Lock–up ON
km/h (mph)
Lock–up OFF
km/h (mph)
2nd Gear (2 position)
60–66 (37–41)
57–63 (35–39)
3rd Gear (D position)
60–66 (37–41)
57–63 (35–39)
O/D Gear (D position)
181–195 (112–121)
69–76 (43–47)
HINT:
(1)
(2)
•
•
(3)
There is no lock–up in the L positions.
In the following cases, the lock–up will be released regardless of the lock–up pattern.
When the throttle valve is completely closed.
When the brake light switch is ON.
Shift up to 3rd will not occur when the engine coolant temp. is below 35°C (95°F) and the vehicle
speed is below 40 km/h (25 mph).
(4) Shift–up to O/D will not occur when the engine coolant temp. is below 60°C (140°F) and the vehicle
speed is below 60 km/h (37 mph).
(5) When the vehicle speed drops to 10 km/h (6 mph) or more below the cruise control set vehicle speed,
shift down from O/D to 3rd occurs.
AT2–118
A340E (2JZ—GTE) AUTOMATIC TRANSMISSION
–
SERVICE SPECIFICATIONS
TORQUE SPECIFICATIONS
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Part tightened
N⋅m
kgf⋅cm
ft⋅lbf
No.1 vehicle speed sensor
16
160
12
No.2 vehicle speed sensor
5.4
55
48 in.⋅lbf
O/D direct clutch speed sensor
5.4
55
48 in.⋅lbf
A/T fluid temp. sensor
15
150
11
Valve body
10
100
7
Oil strainer
10
100
7
Oil pan
7.4
75
65 in.⋅lbf
Starter
37
380
27
Rear support X Body
25
260
19
Torque converter X Drive plate
34
340
25
Oil cooler union nut
34
350
25
Oil cooler pipe bracket
10
100
7
Propeller shaft X Transmission
56
570
41
Propeller shaft X Differential
79
805
58
Propeller shaft center support
49
500
36
Propeller shaft adjusting nut
53
540
39
Oil pan drain plug
17
175
13
Drive plate X Torque converter
33
340
25
Drive plate X Crankshaft
64
650
47
37
72
380
730
27
53
Park/neutral position switch X Transmission case
16
160
12
Transmission output flange
123
1,250
90
Shift control rod X Shift lever
13
130
9
Shift control rod X Park/neutral position switch
16
160
12
Exhaust pipe bracket X Transmission housing
37
380
27
No.2 exhaust pipe X Center exhaust pipe
58
590
43
Rear center floor crossmember brace X Body
13
130
9
Heat insulator X Body
5.4
55
48 in.⋅lbf
Transmission X Engine block
14 mm bolt
17 mm bolt
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