2006 INFINITI M35 Factory Service Manual

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Page 2577 of 5621

INFINITI M35 2006 Factory Service Manual EC-1034
[VK45DE]
DTC P0139, P0159 HO2S2
Revision: 2006 January2006 M35/M45
DTC Confirmation ProcedureNBS005F3
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn i

EC-1034
[VK45DE]
DTC P0139, P0159 HO2S2
Revision: 2006 January2006 M35/M45
DTC Confirmation ProcedureNBS005F3
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.
WITH CONSULT-II
TESTING CONDITION:
For better results, perform “DTC WORK SUPPORT” at a temperature of 0 to 30
C (32 to 86 F).
1. Turn ignition switch ON and select “DATA MONITOR” mode with
CONSULT-II.
2. Start engine and warm it up to the normal operating tempera-
ture.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and
4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Make sure that “COOLAN TEMP/S” indicates more than 70
C
(158
F).
If not, warm up engine and go to next step when “COOLAN
TEMP/S” indication reaches to 70
C (158F).
7. Open engine hood.
8. Select “HO2S2 (B1) P0139” or “HO2S2 (B2) P0159” of “HO2S2” in “DTC WORK SUPPORT” mode with
CONSULT-II.
9. Start engine and following the instruction of CONSULT-II.
NOTE:
It will take at most 10 minutes until “COMPLETED” is displayed.
10. Make sure that “OK” is displayed after touching “SELF-DIAG RESULTS”.
If “NG” is displayed, refer to EC-1039, "
Diagnostic Procedure" .
If “CAN NOT BE DIAGNOSED” is displayed, perform the following.
a. Turn ignition switch OFF and leave the vehicle in a cool place (soak the vehicle).
b. Return to step 1.
Overall Function CheckNBS005F4
Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a 1st
trip DTC might not be confirmed.
WITH GST
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Set voltmeter probes between ECM terminal 55 [HO2S2 (B1) signal] or 74 [HO2S2 (B2) signal] and
ground.
SEF174Y
PBIB2374E

Page 2578 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0139, P0159 HO2S2
EC-1035
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Revision: 2006 January2006 M35/M45
6. Check the voltage when revving up to 4,000 rpm under no load
at least 10 times.
(Depress and rel

Page 2579 of 5621

INFINITI M35 2006 Factory Service Manual EC-1036
[VK45DE]
DTC P0139, P0159 HO2S2
Revision: 2006 January2006 M35/M45
Wiring DiagramNBS005F5
BANK 1
TBWT1020E

Page 2580 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0139, P0159 HO2S2
EC-1037
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Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:

Page 2581 of 5621

INFINITI M35 2006 Factory Service Manual EC-1038
[VK45DE]
DTC P0139, P0159 HO2S2
Revision: 2006 January2006 M35/M45
BANK 2
TBWT1021E

Page 2582 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0139, P0159 HO2S2
EC-1039
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Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:

Page 2583 of 5621

INFINITI M35 2006 Factory Service Manual EC-1040
[VK45DE]
DTC P0139, P0159 HO2S2
Revision: 2006 January2006 M35/M45
2. CLEAR THE SELF-LEARNING DATA
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select �

Page 2584 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0139, P0159 HO2S2
EC-1041
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Revision: 2006 January2006 M35/M45
3. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect heated

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