Toyota T100 1996 Service Manual page 438

DI−174
3 Check output voltage of heated oxygen sensor during idling.
PREPARATION:
Warm up the heated oxygen sensor with the engine at 2,500 rpm for approx. 90 sec.
CHECK:
Use the OBD II scan tool or TOYOTA hand−held tester read the output voltage of the heated oxygen sensor
during idling.
OK:
Heated oxygen sensor output voltage:
Alternates repeatedly between less than 0.35 V and more than 0.55 V (See the following table)
1 V
0.55 V
0.35 V
0 V
NG
Replace heated oxygen sensor.
1996 TOYOTA T100 (RM449U)
DIAGNOSTICS − ENGINE (5VZ−FE)
OK NG
OK Perform confirmation driving pattern.
NG NG
A00292