2003 NISSAN X-TRAIL check engine

EC-168
[QR (WITH EURO-OBD)]
DTC P0133 HO2S1
6. When the following conditions are met, “TESTING” will be dis-
played on the CONSULT-II screen. Maintain the conditions con-
tinuously until “TESTING” changes to “COMPLETED”. (It will
take approximately 20 to 50 seconds.)
If “TESTING” is not displayed after 5 minutes, retry from
step 2.
7. Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”. If “NG” is displayed, refer toEC-170, "
Diagnostic
Procedure".
Overall Function CheckEBS00B4B
Use this procedure to check the overall function of the heated oxygen sensor 1 circuit. During this check, a 1st
trip DTC might not be confirmed.
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Set voltmeter probes between ECM terminal 92 [HO2S1(B1) signal] and engine ground.
3. Check the following with engine speed held at 2,000 rpm con-
stant under no load.
–The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V more
than 5 times within 10 seconds.
4. If NG, go toEC-170, "
Diagnostic Procedure".
ENG SPEED 1,650 - 3,600 rpm
Vehicle speed More than 80 km/h (50 MPH)
B/FUEL SCHDL 4.0 - 14.5msec
Selector lever Suitable position
SEF339Z
SEF658Y
1 time: 0 - 0.3V®0.6 - 1.0V®0 - 0.3V
2 times: 0 - 0.3V®0.6 - 1.0V®0 - 0.3V®0.6 - 1.0V
®0-0.3V
PBIB0543E

EC-170
[QR (WITH EURO-OBD)]
DTC P0133 HO2S1
Diagnostic Procedure
EBS00B4D
1.RETIGHTEN GROUND SCREWS
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
>> GO TO 2.
2.RETIGHTEN HEATED OXYGEN SENSOR 1
Loosen and retighten heated oxygen sensor 1.
>> GO TO 3.
3.CHECK FOR EXHAUST AIR LEAK
1. Start engine and run it at idle.
2. Listen for an exhaust air leak before three way catalyst (Mani-
fold).
OK or NG
OK >> GO TO 4.
NG >> Repair or replace.
4.CHECK FOR INTAKE AIR LEAK
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace.
PBIB0494E
Tightening torque: 40 - 50 N·m (4.1 - 5.1 kg-m, 30 - 37 ft-lb)
PBIB0499E
SEF099P

DTC P0133 HO2S1
EC-171
[QR (WITH EURO-OBD)]
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EC
5.CLEAR THE SELF-LEARNING DATA
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “SELF-LEARNING CONT” in “WORK SUPPORT” mode with CONSULT-II.
3. Clear the self-learning control coefficient by touching “CLEAR”.
4. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0172 detected?
Is it difficult to start engine?
Wi t h ou t C O N S U LT-I I
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch “OFF”.
3. Disconnect mass air flow sensor harness connector, and restart
and run engine for at least 5 seconds at idle speed.
4. Stop engine and reconnect mass air flow sensor harness con-
nector.
5. Make sure 1st trip DTC P0102 is displayed.
6. Erase the 1st trip DTC memory. Refer toEC-46, "
HOW TO
ERASE EMISSION-RELATED DIAGNOSTIC INFORMATION".
7. Make sure DTC P0000 is displayed.
8. Run engine for at least 10 minutes at idle speed.
Is the 1st trip DTC P0171 or P0172 detected?
Is it difficult to start engine?
Ye s o r N o
Yes >> Perform trouble diagnosis for DTC P0171 or DTC P0172 (Refer toEC-194orEC-200).
No >> GO TO 6.
6.CHECK HO2S1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect heated oxygen sensor 1 harness connector.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 92 and HO2S1
terminal 2.
Refer to Wiring Diagram.
4. Check harness continuity between ECM terminal 92 or HO2S1
terminal 2 and ground.
Refer to Wiring Diagram.
5. Also check harness for short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
SEF215Z
PBIB0495E
Continuity should exist.
Continuity should not exist.
PBIB0500E

EC-172
[QR (WITH EURO-OBD)]
DTC P0133 HO2S1
7.CHECK HEATED OXYGEN SENSOR 1 HEATER
Refer toEC-124, "
Component Inspection".
OK or NG
OK >> GO TO 8.
NG >> Replace malfunctioning heated oxygen sensor 1.
8.CHECK MASS AIR FLOW SENSOR
Refer toEC-135, "
Component Inspection".
OK or NG
OK >> GO TO 9.
NG >> Replace mass air flow sensor.
9.CHECK PCV VALVE
Refer toEC-375, "
Component Inspection".
OK or NG
OK >> GO TO 10.
NG >> Replace PCV valve.
10.CHECK HEATED OXYGEN SENSOR 1
Refer toEC-172, "
Component Inspection".
OK or NG
OK >> GO TO 11.
NG >> Replace heated oxygen sensor 1.
11 .CHECK INTERMITTENT INCIDENT
Refer toEC-107, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END
Component InspectionEBS00B4E
HEATED OXYGEN SENSOR 1
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “MANU TRIG” and adjust “TRIGGER POINT” to 100% in “DATA MONITOR” mode with CONSULT-
II.
3. Select “HO2S1 (B1)” and “HO2S1 MNTR (B1)”.
4. Hold engine speed at 2,000 rpm under no load during the follow-
ing steps.
5. Touch “RECORD” on CONSULT-II screen.
SEF646Y

DTC P0133 HO2S1
EC-173
[QR (WITH EURO-OBD)]
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EC
6. Check the following.
l“HO2S1 MNTR (B1)” in “DATA MONITOR” mode changes
from “RICH” to “LEAN” to “RICH” 5 times in 10 seconds.
5 times (cycles) are counted as shown at right.
l“HO2S1 (B1)” voltage goes above 0.6V at least once.
l“HO2S1 (B1)” voltage goes below 0.3V at least once.
l“HO2S1 (B1)” voltage never exceeds 1.0V.
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.
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Set voltmeter probes between ECM terminal 92 [HO2S1 (B1) signal] and engine ground.
3. Check the following with engine speed held at 2,000 rpm con-
stant under no load.
lThe voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V
more than 5 times within 10 seconds.
lThe maximum voltage is over 0.6V at least one time.
lThe minimum voltage is below 0.3V at least one time.
lThe voltage never exceeds 1.0V.
1 time: 0 - 0.3V®0.6 - 1.0V®0 - 0.3V
2times:0-0.3V®0.6 - 1.0V®0-0.3V®0.6 - 1.0V
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.
Removal and InstallationEBS00B4F
HEATED OXYGEN SENSOR 1
Refer toEM-22, "EXHAUST MANIFOLD AND THREE WAY CATALYST".
SEF217YA
SEF648Y
PBIB0543E

DTC P0134 HO2S1
EC-175
[QR (WITH EURO-OBD)]
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EC
On Board Diagnosis LogicEBS00B4J
Under the condition in which the heated oxygen sensor 1 signal is
not input, the ECM circuits will read a continuous approximately
0.3V. Therefore, for this diagnosis, the time that output voltage is
within 200 to 400 mV range is monitored, and the diagnosis checks
that this time is not inordinately long.
DTC Confirmation ProcedureEBS00B4K
CAUTION:
Always drive vehicle at a safe speed.
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:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Select “HO2S1 (B1) P0134" of “HO2S1” in “DTC WORK SUPPORT” mode with CONSULT-II.
3. Touch “START”.
4. Let it idle for at least 3 minutes.
NOTE:
Never raise engine speed above 3,600 rpm after this step. If
the engine speed limit is exceeded, return to step 4.
5. When the following conditions are met, “TESTING” will be dis-
played on the CONSULT-II screen. Maintain the conditions con-
tinuously until “TESTING” changes to “COMPLETED”. (It will
take approximately 10 to 60 seconds.)
If “TESTING” is not displayed after 5 minutes, retry from
step 2.
SEF237U
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0134
0134Heated oxygen sensor
1 circuit high no activity
detectedThe voltage from the sensor is constantly
approx. 0.3V.
lHarness or connectors
(The sensor circuit is open or shorted)
lHeated oxygen sensor 1
PBIB0544E
ENG SPEED 1,550 - 3,600 rpm
Vehicle speed More than 64 km/h (40 MPH)
B/FUEL SCHDL 2.9 - 14.5 msec
Selector lever Suitable position
PBIB0545E

EC-176
[QR (WITH EURO-OBD)]
DTC P0134 HO2S1
6. Make sure that “OK” is displayed after touching “SELF-DIAG
RESULTS”. If “NG” is displayed, refer toEC-178, "
Diagnostic
Procedure".
Overall Function CheckEBS00B4L
Use this procedure to check the overall function of the heated oxygen sensor 1 circuit. During this check, a 1st
trip DTC might not be confirmed.
WITH GST
1. Start engine and warm it up to normal operating temperature.
2. Set voltmeter probes between ECM terminal 92 [HO2S1 (B1) signal] and engine ground.
3. Check the following with engine speed held at 2,000 rpm con-
stant under no load.
–The voltage does not remain in the range of 0.2 - 0.4V.
4. If NG, go toEC-178, "
Diagnostic Procedure".
SEC750C
PBIB0543E

EC-178
[QR (WITH EURO-OBD)]
DTC P0134 HO2S1
Diagnostic Procedure
EBS00B4N
1.INSPECTION START
1. Turn ignition switch “OFF”.
2. Loosen and retighten engine ground screws.
>> GO TO 2.
2.CHECK HO2S1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Disconnect HO2S1 harness connector.
2. Check harness continuity between HO2S1 terminal 3 and
ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to power in harness or con-
nectors.
3.CHECK HO2S1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 92 and HO2S1 terminal 2.
Refer to Wiring Diagram.
3. Check harness continuity between ECM terminal 92 or HO2S1 terminal 2 and ground.
Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK HEATED OXYGEN SENSOR 1
Refer toEC-179, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace heated oxygen sensor 1.
PBIB0494E
Continuity should exist.
PBIB0500E
Continuity should exist.
Continuity should not exist.