1996 TOYOTA T100 engine

Downloaded from www.Manualslib.com manuals search engine AB0119
I00012I00025
ON
OD
(−) (+)
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−441
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check operation of overdrive.
PREPARATION:
Test drive after engine warms up.
CHECK:
Check that overdrive ON ↔ OFF occurs with operation of OD switch ON−OFF.
NG Check and repair electronically controlled
transmission (See page DI−311).
OK
2 Check voltage between terminal OD of harness side connector of cruise control
ECU and body ground.
PREPARATION:
(a) Remove the ECU with connector still connected.
(b) Turn ignition switch ON.
(c) Disconnect the ECU connector.
CHECK:
Measure voltage between terminal OD of ECU connector on
the harness side and body ground.
OK:
Voltage: 10 − 16 V
NG Go to step 5.
OK

Downloaded from www.Manualslib.com manuals search engine I00019
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 I22684
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−443
1996 TOYOTA T100 (RM449U)
Park/Neutral Position Switch Circuit
CIRCUIT DESCRIPTION
When the shift position is in except D position, a signal is sent from the park/neutral position switch to the
ECU. When this signal is input during cruise control driving, the ECU cancels the cruise control.
WIRING DIAGRAM
DI358−02

Downloaded from www.Manualslib.com manuals search engine Input SignalIndicator Light
Blinking Pattern
Turn PNP switch
OFF (Shift to
except D position)LightON
OFFSW ON
SW OFF
DI−444
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check starter operation.
CHECK:
Check that the starter operates normally and that the engine starts.
NG Proceed to engine troubleshooting.
(3RZ−FE: See page DI−1)
(5VZ−FE: See page DI−127)
OK
2 Input signal check.
PREPARATION:
See input signal check on page DI−410.
CHECK:
Check the indicator light when shifting into except D position.
OK:
The indicator light goes off when shifting into except
D position.
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI−419).
NG

Downloaded from www.Manualslib.com manuals search engine AB0119
I00017
I00026
ON
N&C
(−)
(+)
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−445
1996 TOYOTA T100 (RM449U)
3 Check voltage between terminal N & C of cruise control ECU connector and
body ground.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure each voltage between terminal N & C of ECU connec-
tor and body ground when shifting into D position and other
positions.
OK:
Shift PositionVoltage
D position10 − 16 V
Other positionsBelow 1 V
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI−419).
NG
4 Check harness and connector between cruise control ECU and park/neutral
position switch (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 I22683
DI−446
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 TOYOTA T100 (RM449U)
Clutch Switch Circuit
CIRCUIT DESCRIPTION
When the clutch pedal is depressed, the clutch switch sends a signal to the cruise control ECU. When the
signal is input to the cruise control ECU during cruise control driving, the cruise control ECU cancels cruise
control.
WIRING DIAGRAM
DI359−02

Downloaded from www.Manualslib.com manuals search engine Input Signal
Indicator Light
Blinking Pattern
Clutch switch
OFF (Depress
clutch pedal)
LightON
OFFSW ON
SW OFF
− DIAGNOSTICSCRUISE CONTROL SYSTEM
DI−447
1996 TOYOTA T100 (RM449U)
INSPECTION PROCEDURE
1 Check starter operation.
CHECK:
Check that the starter operates normally and that the engine starts.
NG Proceed to engine troubleshooting.
(3RZ−FE: See page DI−1)
(5VZ−FE: See page DI−127)
OK
2 Input signal check.
PREPARATION:
See input signal check on page DI−410.
CHECK:
Check the indicator light when clutch pedal is depressed.
OK:
The indicator light goes off when depressing the
clutch pedal .
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI−419).
NG

Downloaded from www.Manualslib.com manuals search engine AB0119
I00017
I00026
ON
N&C
(+) (−)
DI−448
− DIAGNOSTICSCRUISE CONTROL SYSTEM
1996 TOYOTA T100 (RM449U)
3 Check voltage between terminal N & C of cruise control ECU and body ground.
PREPARATION:
Turn ignition switch ON.
CHECK:
Measure voltage between terminal N & C of cruise control ECU
connector and body ground when clutch pedal is depressed
and released.
OK:
Shift PositionVoltage
Clutch pedal releasedBelow 1 V
Clutch pedal depressed10 − 16 V
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI−419).
NG
4 Check for open in harness and connector between ECU and GAUGE fuse (See
page IN−16).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU (See
page IN−26).