O/D Off Indicator Light Remains On - Toyota T100 1996 Service Manual

O/D OFF indicator light remains ON:

1 Check 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).
OK
Check and replace ECM.
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS −
PREPARATION:
Disconnect the O/D main switch connector.
CHECK:
Check continuity between terminals 1 and 2 of O/D main switch
connector.
1
OK:
2
O/D main switch
Q07663
NG
NG
AUTOMATIC TRANSMISSION
ON
OFF
Replace O/D main switch.
Repair or replace harness or connector.
DI−315
Specified condition
No continuity
Continuity