Toyota T100 1996 Service Manual page 582

DI−318
NG
3 Check harness and connector between stop light switch and ECM (See page
IN−26).
OK
Check and replace ECM.
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS − AUTOMATIC TRANSMISSION
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−282).
NG Repair or replace harness or connector.