Toyota T100 1996 Service Manual page 706

DI−442
3 Check voltage between terminal ECT of cruise control ECU connector and body
ground (On test drive).
ECT
(−) (+)
NG
4 Check harness and connector between terminal ECT of cruise control ECU and
electronically controlled transmission solenoid (See page IN−16).
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).
OK
Check and replace cruise control ECU (See
page IN−26).
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS − CRUISE CONTROL SYSTEM
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 position
I00019
OK Proceed to next circuit inspection shown in
problem symptoms table (See page DI−419).
NG Repair or replace harness or connector.
NG Repair or replace harness or connector.
ON
OFF
Voltage
Below 1 V
10 − 16 V