Toyota T100 1996 Service Manual page 316

DI−52
INSPECTION PROCEDURE
1 Check voltage between terminals HT1, HT2 of ECM connector and body ground.
ON
For M/T
HT1 (+) HT2 (+)
For M/T
HT1 (+) HT2 (+)
BE6653
P23814
P23815
NG
2 Check resistance of heated oxygen sensor heater.
OK
Check and repair harness or connector be-
tween EFI main relay, heated oxygen sensor
and ECM.
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS − ENGINE (3RZ−FE)
PREPARATION:
(a) Remove the right cowl side trim (See page MF−50).
(b) Turn the ignition switch ON.
CHECK:
Measure voltage between terminals HT1, HT2 of ECM connec-
tor and body ground.
HINT:
Connect terminal HT1 to bank 1 sensor 1.
S
Connect terminal HT2 to bank 1 sensor 2.
S
OK:
Voltage: 9 − 14 V
A00056
OK Check and replace ECM (See page IN−26).
NG Replace heated oxygen sensor.