1996 TOYOTA T100 automatic transmission

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Q07661
Q07662D00016
3RZ−FE
5VZ−FEOD2
(+)
(−) ON
OD2 (+) (−)
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−313
1996 TOYOTA T100 (RM449U)
2 Check OVRDRIVE CUT SW2 signal.
When using TOYOTA hand−held tester:
PREPARATION:
(a) Connect a TOYOTA hand−held tester to the DLC3.
(b) Turn the ignition switch ON and TOYOTA hand−held tes-
ter main switch ON.
CHECK:
Read the ”OVRDRIVE CUT SW2” signal on the TOYOTA
hand−held tester.
OK:
O/D main switch conditionOVRDRIVE CUT SW2 signal
ON (Pushed in)ON
OFF (Pushed once again)OFF
When not using TOYOTA hand−held tester:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Check voltage between terminal OD2 of ECM and body ground.
OK:
O/D main switch conditionVoltage
ON (Pushed in)9 − 14 V
OFF (Pushed once again)Below 3 V
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−282).
NG

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1
2
DI−314
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
3 Check harness and connector between O/D OFF indicator light and ECM (See
page IN−26).
NG Repair or replace harness or connector.
OK
Check O/D main switch.
4 Check O/D main switch.
PREPARATION:
Disconnect the O/D main switch connector.
CHECK:
Check continuity resistance between terminal 1 and 2 of O/D
main switch connector.
OK:
O/D main switch conditionSpecified condition
ON (Pushed in)No continuity
OFF (Pushed once agin)Continuity
NG Replace O/D main switch.
OK
Check and replace the combination meter
(See page BE−38).

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1
2
− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−315
1996 TOYOTA T100 (RM449U)
O/D OFF indicator light remains ON:
1 Check O/D main switch.
PREPARATION:
Disconnect the O/D main switch connector.
CHECK:
Check continuity between terminals 1 and 2 of O/D main switch
connector.
OK:
O/D main switchSpecified condition
ONNo continuity
OFFContinuity
NG Replace O/D main switch.
OK
2 Check harness and connector between O/D OFF indicator light and O/D main
switch, O/D OFF indicator light and ECM (See page IN−26).
NG Repair or replace harness or connector.
OK
Check and replace ECM.

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DI−316
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
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 signals to the ECM. Then the ECM cancels operation
of the lock−up clutch while braking is in progress.
WIRING DIAGRAM
DI98I−01

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− DIAGNOSTICSAUTOMATIC TRANSMISSION
DI−317
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check operation of stop light.
CHECK:
Check if the stop lights go on and off normally when the brake pedal is operated and released.
NG Check and repair stop light circuit.
OK
2 Check STP signal.
When using OBD II scan tool or TOYOTA hand−held tester:
PREPARATION:
(a) Connect an OBD II scan tool or TOYOTA hand−held tes-
ter to the DLC3.
(b) Turn the ignition switch ON and OBD II scan tool or TOY-
OTA hand−held tester main switch ON.
CHECK:
Read the STP signal on the TOYOTA hand−held tester.
OK:
Brake PedalSTP Signal
DepressedON
ReleaseOFF
When not using OBD II scan tool or TOYOTA hand−held tes-
ter:
PREPARATION:
Turn the ignition switch ON.
CHECK:
Check the voltage between terminal B/K of the ECM connector
and body ground.
OK:
Brake PedalVoltage
Depressed7.5 − 14 V
ReleaseBelow 1.5 V

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− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−282).
NG
3 Check harness and connector between stop light switch and ECM (See page
IN−26).
NG Repair or replace harness or connector.
OK
Check and replace ECM.

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AUTOMATIC TRANSMISSION SYSTEM AT-1
EXTENSION HOUSING OIL SEAL
(A340E) AT-3
SENSOR ROTOR (A340E) AT-4
SPEEDOMETER DRIVEN GEAR AT-8
VEHICLE SPEED SENSOR AT-10
PARK/NEUTRAL POSITION (PNP)
SWITCH AT-11
VALVE BODY ASSEMBLY AT-12
PARKING LOCK PAWL AT-17
THROTTLE CABLE AT-18
SHIFT LOCK SYSTEM AT-19
AUTOMATIC TRANSMISSION UNIT
(A340E) AT-26
AUTOMATIC TRANSMISSION UNIT
(A340F) AT-33
TORQUE CONVERTER CLUTCH AND
DRIVE PLATE AT-38

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− AUTOMATIC TRANSMISSIONAUTOMATIC TRANSMISSION SYSTEM
AT−1
1342 Author: Date:
1996 TOYOTA T100 (RM449U)
AUTOMATIC TRANSMISSION SYSTEM
PRECAUTION
If the vehicle is equipped with a mobile communication system, refer to the precautions in the IN section.