2006 INFINITI M35 Factory Service Manual

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Page 1833 of 5621

INFINITI M35 2006 Factory Service Manual EC-290
[VQ35DE]
DTC P0137, P0157 HO2S2
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground term

Page 1834 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0137, P0157 HO2S2
EC-291
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Revision: 2006 January2006 M35/M45
BANK 2
TBWT0955E

Page 1835 of 5621

INFINITI M35 2006 Factory Service Manual EC-292
[VQ35DE]
DTC P0137, P0157 HO2S2
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground term

Page 1836 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0137, P0157 HO2S2
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2. CLEAR THE SELF-LEARNING DATA
With CONSULT-II
1. Start engine and warm it up to normal operating

Page 1837 of 5621

INFINITI M35 2006 Factory Service Manual EC-294
[VQ35DE]
DTC P0137, P0157 HO2S2
Revision: 2006 January2006 M35/M45
4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal and HO2S2 terminal as

Page 1838 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0137, P0157 HO2S2
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6. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select
“HO2S2 (B1)/(B2)” as the mo

DTC P0137, P0157 HO2S2
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6. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select
“HO2S2 (B1)/(B2)” as the monitor item with CONSULT-II.
7. Check “HO2S2 (B1)/(B2)” at idle speed when adjusting “FUEL INJECTION” to
25%.
“HO2S2 (B1)/(B2)” should be above 0.78V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)/(B2)” should be below 0.18V at least once when the “FUEL INJECTION” is
25%.
CAUTION:
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
Without CONSULT-II
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 74 [HO2S2 (B2) signal] or 55 [HO2S2 (B1) signal] and
ground.
6. Check the voltage when revving 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 above 0.78V at least once during this
procedure.
If the voltage is above 0.78V at step 6, step 7 is not neces-
sary.
7. Keep vehicle at idling for 10 minutes, then check voltage. Or
check the voltage when coasting from 80 km/h (50 MPH) in D
position.
The voltage should be below 0.18V at least once during this
procedure.
8. If NG, replace heated oxygen sensor 2.
CAUTION:
Discard any heated oxygen sensor which has been dropped from a height of more than 0.5 m (19.7
in) onto a hard surface such as a concrete floor; use a new one.
Before installing new oxygen sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner tool J-43897-18 or J-43897-12 and approved anti-seize lubricant.
PBIB1672E
PBIB2163E
PBIB1607E

Page 1839 of 5621

INFINITI M35 2006 Factory Service Manual EC-296
[VQ35DE]
DTC P0137, P0157 HO2S2
Revision: 2006 January2006 M35/M45
Removal and InstallationNBS004X9
HEATED OXYGEN SENSOR 2
Refer to EM-26, "EXHAUST MANIFOLD" .

Page 1840 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0138, P0158 HO2S2
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DTC P0138, P0158 HO2S2PFP:226A0
Component DescriptionNBS004XA
The heated oxygen sensor 2, after thre

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