Toyota T100 1996 Service Manual page 513

INSPECTION PROCEDURE
HINT:
This diagnostic chart is based on the premise that the engine is cranked normally. If the engine is not
cranked, proceed to the problem symptoms table on page DI−148.
TOYOTA hand−held tester:
1 Connect TOYOTA hand−held tester and check STA signal.
PREPARATION:
(a) Connect the TOYOTA hand−held tester to the DLC3.
(b) Turn the ignition switch ON and push the TOYOTA hand−held tester main switch ON.
CHECK:
Read STA signal on the TOYOTA hand−held tester while starter operates.
OK:
Ignition Switch Position
STA signal
NG
2 Check for open in harness and connector between ECM and starter relay (Mark-
ing: ST) (See page IN−26).
OK
Check and replace ECM (See page IN−26).
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS − ENGINE (5VZ−FE)
ON
OFF
OK Proceed to next circuit inspection shown on
problem symptoms table (See page DI−148).
NG Repair or replace harness or connector.
DI−249
START
ON