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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.
Page 580 of 2062
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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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Vehicle Brought to Workshop
Customer Problem Analysis
P. DI−320
Check and Clear DTC (Precheck)
P.
DI−321
Items inside
are titles of pages in this manual,
with the page number in the bottom portion. See
the pages for detailed explanations.
Problem Symptom ConfirmationSymptom Simulation
P. IN−16
Symptom
does not occur
Symptom
occurs
DTC Check
P. DI−321
Sensor CheckCircuit Inspection
P. DI−332 ∼ DI−360
DTC Chart
P. DI−326 Malfunction codeProblem Symptoms Table
P. DI−331
Check for Fluid Leakage
P. DI−362
Identification of Problem
Normal code
Repair
Confirmation Test
End
1
2
3
4
5
67
89
10
11
Step 8 :Diagnostic steps permitting the use of the
TOYOTA hand−held tester or TOYOTA
break−out−box.
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
DI−319
576 Author: Date:
1996 TOYOTA T100 (RM449U)
ANTI−LOCK BRAKE SYSTEM
HOW TO PROCEED WITH TROUBLESHOOTING
Troubleshoooting in accordance with the procedure on the following pages.
Page 584 of 2062
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ABS Check SheetInspector ’s
Name:
Customer ’s Name
Date Vehicle
Brought InRegistration YearRegistration No.
Frame No.
Odometer Reading/ /
/ /
Date Problem First Occurred
Frequency Problem Occurs/ /
ContinuousIntermittent ( times a day)
ABS does not operate.
ABS does not operate efficiently.
ABS Warning Light
AbnormalRemains ONDoes not Light Up
DTC Check1st Time
2nd TimeNormal Code
Malfunction Code (Code )
Normal CodeMalfunction Code (Code )
Symptomskm
miles DI−320
− DIAGNOSTICSANTI−LOCK BRAKE SYSTEM
1996 TOYOTA T100 (RM449U)
CUSTOMER PROBLEM ANALYSIS CHECK