replace manual transmission TOYOTA T100 1996 Factory Owner's Guide

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DI−308
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
2 Check park/neutral position switch.
PREPARATION:
(a) Jack up the vehicle.
(b) Disconnect the park/neutral position switch connector.
CHECK:
Check continuity between each terminal shown below when the
shift lever is moved to each position.
OK:
Shift PositionTerminal No. to continuityTerminal No. to continuity
P4 − 75 − 6
R4 − 8−
N4 − 105 − 6
D4 − 9−
22 − 4−
L3 − 4−
NG Replace park/neutral position switch.
OK
Repair or replace harness and connector between battery and park/neutral position switch,
park/neutral position switch and ECM (See page IN−26).

Downloaded from www.Manualslib.com manuals search engine D10999
DI−310
− DIAGNOSTICSAUTOMATIC TRANSMISSION
1996 TOYOTA T100 (RM449U)
2 Check voltage between terminal OD of cruise control ECU harness side
connector and body ground.
PREPARATION:
(a) Disconnect the cruise control ECU connector.
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminal OD of cruise control ECU
harness side connector and body ground.
OK:
Voltage: 4 − 6 V
OK Check and replace cruise control ECU.
NG
3 Check harness and connector between cruise control ECU and ECM
(See page IN−26).
NG Repair or replace harness or connector.
OK
Check and replace ECM.

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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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− 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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ECT
(−) (+)
DI−442
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 TOYOTA T100 (RM449U)
3 Check voltage between terminal ECT of cruise control ECU connector and body
ground (On test drive).
PREPARATION:
(a) Connect the ECU connector.
(b) Test drive after engine warms up.
CHECK:
Check voltage between terminal ECT of ECU connector and
body ground when OD switch is ON and OFF.
OK:
OD switch positionVoltage
ONBelow 1 V
OFF10 − 16 V
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI−419).
NG
4 Check harness and connector between terminal ECT of cruise control ECU and
electronically controlled transmission solenoid (See page IN−16).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU.(See
page IN−26)
5 Check harness and connector between terminal OD of cruise control ECU and
terminal OD1 of ECM (See page IN−16).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU (See
page IN−26).

Downloaded from www.Manualslib.com manuals search engine P25104Sound Scope
SF0AP−03
P24765
P25103
Ohmmeter MF−16
− MFI (3RZ−FE)INJECTOR
968 Author: Date:
1996 TOYOTA T100 (RM449U)
INJECTOR
ON−VEHICLE INSPECTION
1. INSPECT INJECTOR OPERATION
Check operation sound from each injector.
(1) With the engine running or cranking, use a sound
scope to check that there is normal operating noise
in proportion to engine speed.
(2) If you have no sound scope, you can check the in-
jector transmission operation with your finger.
If no sound or unusual sound is heard, check the wiring connec-
tor, injector or injection signal from the ECM.
2. INSPECT INJECTOR RESISTANCE
(a) Remove the throttle body.
(See page MF−28)
(b) Disconnect the injector connectors.
(c) Using an ohmmeter, measure the resistance between the
terminals.
Resistance:
12 − 16 Ω at 20°C (68°F)
If the resistance is not as specified, replace the injector.
(d) Reconnect the injector connectors.
(e) Reinstall the throttle body.
(See page MF−30)

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P16016
P15974
− MFI (3RZ−FE)IDLE AIR CONTROL (IAC) VALVE
MF−31
983 Author: Date:
1996 TOYOTA T100 (RM449U)
IDLE AIR CONTROL (IAC) VALVE
ON−VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:
Engine at normal operating temperature
Idle speed set correctly
Transmission in neutral range
(b) Using SST, connect terminals TE1 and E1 of the
DLC1.
SST 09843−18020
(c) After engine rpm are kept at 1,000 − 1,500 rpm for 5 se-
conds, check that they return to idle speed.
If the rpm operation is not as specified, check the IAC valve, wir-
ing and ECU.
(d) Remove SST.
SST 09843−18020
2. INSPECT IAC VALVE RESISTANCE
NOTICE:
”Cold” and ”Hot” in the following sentences express the
temperature of the coils themselves. ”Cold” is from −10°C
(14°F) to 50°C (122°F) and ”Hot” is from 50°C (122°F) to
100°C (212°F).
(a) Disconnect the IAC valve connector.
(b) Using an ohmmeter, measure the resistance between ter-
minal +B and other terminals (RSC, RSO).
Resistance:
Cold: 21.5 − 28.5Ω
Hot: 17.0 − 24.5Ω
If resistance is not as specified, replace the IAC valve.
(c) Reconnect the IAC valve connector.

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P19970
SST
TE1 E1DLC1
DLC1
P21126
Ohmmeter RSC
+B
RSOIAC Valve
− SFI (5VZ−FE)IDLE AIR CONTROL (IAC) VALVE
SF−39
1045 Author: Date:
1996 TOYOTA T100 (RM449U)
IDLE AIR CONTROL (IAC) VALVE
ON−VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
(a) Initial conditions:
Engine at normal operating temperature
Idle speed check correctly
Transmission in neutral position
A/C switch OFF
(b) Using SST, connect terminals TE1 and E1 of the
DLC1.
SST 09843−18020
(c) After engine speed is kept at approx. 1,000 rpm for 5 se-
conds, check that it returns to idle speed.
If the engine speed operation is not as specified, check the IAC
valve, wiring and ECM.
(d) Remove the SST from the DLC1.
SST 09843−18020
2. INSPECT IAC VALVE RESISTANCE
NOTICE:
”Cold” and ”Hot” in the following sentences express the
temperature of the coils themselves. ”Cold” is from −10°C
(14°F) to 50°C (122°F) and ”Hot” is from 50°C (122°F) to
100°C (212°F).
(a) Disconnect the IAC valve connector.
(b) Using an ohmmeter, measure the resistance between ter-
minal +B and other terminals (RSC, RSO).
Resistance:
Cold: 17.0 − 24.5 Ω
Hot: 21.5 − 28.5 Ω
If resistance is not as specified, replace the IAC valve.
(c) Reconnect the IAC valve connector.
3. INSPECT AIR ASSIST SYSTEM
(a) Initial conditions:
Engine at normal operating temperature
Idle speed check correctly
Transmission in neutral position
A/C switch OFF

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MT−2
− MANUAL TRANSMISSION (R150, R150F)TROUBLESHOOTING
1257 Author: Date:
1996 TOYOTA T100 (RM449U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, replace these parts.
SymptomSuspect AreaSee page
Noise
1. Oil (Level low) 2WD
4WD
2. Oil (Wrong) 2WD
4WD
3. Gear (Worn or damaged)
4. Bearing (Worn or damaged)MT−4
MT−7
MT−4
MT−7
MT−11
MT−11
Oil leakage
1. Oil (Level too high) 2WD
4WD
2. Gasket (Damaged)
3. Oil seal (Worn or damaged)
4. O−Ring (Worn or damaged)MT−4
MT−7
MT−11
MT−11
MT−11
Hard to shift or will not shift
1. Synchronizer ring (Worn or damaged)
2. Shift key spring (Damaged)MT−22
MT−25
MT−34
MT−25
MT−34
Jumps out of gear
1. Locking ball spring (Damaged)
2. Shift fork (Worn)
3. Gear (Worn or damaged)
4. Bearing (Worn or damaged)MT−11
MT−11
MT−11
MT−11