2003 NISSAN X-TRAIL Service Repair Manual

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Page 585 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0138 HO2S2
EC-207
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Removal and InstallationEBS010OT
HEATED OXYGEN SENSOR 2
Refer to EX-2, "EXHAUST SYSTEM" .

Page 586 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-208
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DTC P0139 HO2S2

DTC P0139 HO2S2PFP:226A0
Component DescriptionEBS010OU
The heated oxygen sensor 2, after three way catalyst (manifold),
monitors the oxygen level in the e

Page 587 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0139 HO2S2
EC-209
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DTC Confirmation ProcedureEBS010OX
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
“COMPLETED” will appear on CONSULT-

DTC P0139 HO2S2
EC-209
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DTC Confirmation ProcedureEBS010OX
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
“COMPLETED” will appear on CONSULT-II screen when all tests “COND1”, “COND2” and
“COND3” are completed.
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:
Never stop engine during this procedure. If the engine is stopped, retry this procedure from step 2 in
Procedure for COND1.
WITH CONSULT-II
Procedure for COND1
For the best results, perform DTC WORK SUPPORT at a temperature of 0 to 30°(32 to 86°F).
1. Start engine and warm it up to 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 1 minute.
5. Select “HO2S2 (B1) P0139” of “HO2S2” in “DTC WORK SUPPORT” mode with CONSULT-II.
6. Touch “START”.
7. Start engine and let it idle for at least 30 seconds.
8. Rev engine up to 2,000 rpm 2 or 3 times quickly under no load.
If “COMPLETED” appears on CONSULT-II screen, go to step 2 in Procedure for COND3.
If “COMPLETED” does not appear on CONSULT-II screen, go to the following step.
9. When the following conditions are met, “TESTING” will be displayed at “COND1” on the CONSULT-II
screen. Maintain the conditions continuously until “TESTING” changes to “COMPLETED”. (It will take
approximately 60 seconds.)
NOTE:
If “TESTING” is not displayed after 5 minutes, retry from step 2 in Procedure for COND1.
If “COMPLETED” already appears at “COND2” on CONSULT-II screen before Procedure for
COND2 is conducted, it is unnecessary to conduct step 1 in Procedure for COND2.
ENG SPEED More than 1,000 rpm
B/FUEL SCHDL More than 1.0 msec
COOLAN TEMP/S 70 - 105 °C
Selector level Suitable position
PBIB0552E

Page 588 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-210
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DTC P0139 HO2S2

Procedure for COND2
1. While driving, release accelerator pedal completely with “OD”
OFF (A/T) from the above condition [step 9] until “INCOM-
PLETE

EC-210
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DTC P0139 HO2S2

Procedure for COND2
1. While driving, release accelerator pedal completely with “OD”
OFF (A/T) from the above condition [step 9] until “INCOM-
PLETE” at “COND2” on CONSULT-II screen has turned to
“COMPLETED”. (It will take approximately 4 seconds.)
NOTE:
If “COMPLETED” already appears at “COND3” on CONSULT-II
screen before Procedure for COND3 is conducted, it is unnec-
essary to conduct step 1 in Procedure for COND3.
Procedure for COND3
1. Stop vehicle and let it idle until “INCOMPLETE” of “COND3” on
CONSULT-II screen has turned to “COMPLETED”. (It will take a
maximum of approximately 6 minutes.)
2. Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”.
If “NG” is displayed, refer to EC-212, "
Diagnostic Procedure" .
If “CAN NOT BE DIAGNOSED” is displayed, perform the follow-
ing.
a. Turn ignition switch OFF and leave the vehicle in a cool place
(soak the vehicle).
b. Turn ignition switch ON and select “COOLAN TEMP/S” in “DATA
MONITOR” mode with CONSULT-II.
c. Start engine and warm it up while monitoring “COOLAN TEMP/S” indication on CONSULT-II.
d. When “COOLAN TEMP/S” indication reaches to 70°(158°F), go to Procedure for COND1 step 3.
Overall Function CheckEBS010OY
Use this procedure to check the overall function of the heated oxygen sensor 2 circuit. During this check, a
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 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.)
A change of voltage should be more than 0.06V for 1 sec-
ond during this procedure.
If the voltage can be confirmed in step 6, step 7 is not nec-
essary.
7. Keep vehicle at idling for 10 minutes, then check the 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).
A change of voltage should be more than 0.06V for 1 sec-
ond during this procedure.
8. If NG, go to EC-212, "
Diagnostic Procedure" .
PBIB0553E
SEF668Y
MBIB0020E

Page 589 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0139 HO2S2
EC-211
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Wiring DiagramEBS010OZ
TBWA0603E

Page 590 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-212
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DTC P0139 HO2S2

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/o

Page 591 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0139 HO2S2
EC-213
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2. CLEAR THE SELF-LEARNING DATA
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “SE

Page 592 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-214
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DTC P0139 HO2S2

4. CHECK HO2S2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between HO2S2 terminal 2 and ECM terminal 16.
Refer to Wiring Diagram.

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