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SEF666Y
DTC Confirmation Procedure
NFEC0908
SEF667Y
SEF668Y
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
Open engine hood before conducting following procedure.
WITH CONSULT-II
NFEC0908S01
1) Start engine and warm it up to normal operating temperature.
2) Turn ignition switch “OFF” and wait at least 10 seconds.
3) Turn ignition switch “ON”.
4) Select “DATA MONITOR” mode with CONSULT-II.
5) Make sure that “COOLAN TEMP/S” indicates more than 70°C
(158°F).
6) Select “HO2S2 (B1)/(B2) P0139/P0159” of “HO2S2” in “DTC
WORK SUPPORT” mode with CONSULT-II.
7) Start engine and follow the instruction of CONSULT-II.
8) Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”.
If NG is displayed, refer to “Diagnostic Procedure”, EC-262.
If “CANNOT BE DIAGNOSED” is displayed, perform the fol-
lowing.
a) Stop engine and cool down until “COOLAN TEMP/S” indicates
less than 70°C (158°F).
b) Turn ignition switch “ON”.
c) Select “DATA MONITOR” mode with CONSULT-II.
d) Start engine.
e) Return to step 6 again when the “COOLAN TEMP/S” reaches
to 70°C (158°F).
SEC903C
Overall Function Check
NFEC0909
Use this procedure to check the overall function of the heated oxy-
gen sensor 2 circuit. During this check, a 1st trip DTC might not be
confirmed.
WITH GST
NFEC0909S01
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 88 (HO2S2 bank
1 signal) or 90 (HO2S2 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 change at more than 0.06V for 1 sec-
ond 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 “OD” OFF (A/T).
The voltage should change at more than 0.06V for 1 sec-
ond during this procedure.
DTC P0139, P0159 HO2S2
DTC Confirmation Procedure
EC-258
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