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SEF922UA
Overall Function Check
=NGEC0656
Use this procedure to check the overall function of the heated oxy-
gen sensor 2 (rear) circuit. During this check, a 1st trip DTC might
not be confirmed.
CAUTION:
Always drive vehicle at a safe speed.
Without CONSULT-II
1) Start engine and drive vehicle at a speed of more than 70 km/h
(43 MPH) for 2 consecutive minutes.
2) Stop vehicle with engine running.
3) Set voltmeter probes between ECM terminal 56 (bank 1 signal)
or 57 (bank 2 signal) and engine ground.
4) Check the voltage when racing up to 4,000 rpm under no load
at least 10 times.
(depress and release accelerator pedal as soon as possible)
The voltage should be below 0.48V at least once during
this procedure.
If the voltage can be confirmed in step 4, step 5 is not
necessary.
5) Keep vehicle at idling for 10 minutes, then check the voltage.
Or check the voltage when coasting from 80 km/h (50 MPH)
in 3rd gear position (M/T), “D” position with “O/D” OFF (A/T).
The voltage should be below 0.48V at least once during
this procedure.
6) If NG, go to “Diagnostic Procedure”, EC-841.
DTC P0137, P0157 HEATED OXYGEN SENSOR 2 (REAR)
(BANK 1)/(BANK 2) (MIN. VOLTAGE MONITORING)
VG33E
Overall Function Check
EC-838
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