2005 NISSAN X-TRAIL Service Repair Manual

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Page 609 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0138 HO2S2
EC-205
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WITH CONSULT-II
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-II.
2. Start engine and warm it up t

Page 610 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-206
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DTC P0138 HO2S2

Wiring DiagramEBS010OQ
TBWA0603E

Page 611 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0138 HO2S2
EC-207
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground termin

Page 612 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-208
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DTC P0138 HO2S2

2. CHECK HO2S2 GROUND CIRCUIT FOR OPEN AND SHORT
1. Disconnect heated oxygen sensor 2 harness connector.
2. Disconnect ECM harness connector.
3. Check har

Page 613 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0138 HO2S2
EC-209
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5. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select
“HO2S2(B1)” as the monitor item with CONSULT-II.
6. Che

DTC P0138 HO2S2
EC-209
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5. Select “FUEL INJECTION” in “ACTIVE TEST” mode, and select
“HO2S2(B1)” as the monitor item with CONSULT-II.
6. Check “HO2S2 (B1)” at idle speed when adjusting “FUEL INJECTION” to ±25%.
“HO2S2 (B1)” should be above 0.68V at least once when the “FUEL INJECTION” is +25%.
“HO2S2 (B1)” should be below 0.50V 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 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 16 (HO2S2 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 0.68V at least once during this
procedure.
If the voltage is above 0.68V at step 6, step 7 is not neces-
sary.
7. Keep vehicle idling for 10 minutes, then check voltage. Or check
the voltage when coasting from 80 km/h (50 MPH) in D position
with “OD” OFF (A/T), 3rd gear position (M/T).
The voltage should be below 0.50V 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 and approved anti-seize lubricant.
SEF662Y
PBIB0551E
MBIB0020E

Page 614 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-210
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DTC P0138 HO2S2

Removal and InstallationEBS010OT
HEATED OXYGEN SENSOR 2
Refer to EX-2, "EXHAUST SYSTEM" .

Page 615 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0139 HO2S2
EC-211
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DTC P0139 HO2S2PFP:226A0
Component DescriptionEBS010OU
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors

Page 616 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-212
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DTC P0139 HO2S2

DTC Confirmation ProcedureEBS010OX
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
“COMPLETED” will appear on CONSULT-II screen when all tests �

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