2003 NISSAN X-TRAIL turn signal

DTC P0120 TP SENSOR
EC-151
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
4.CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between electric throttle control actuator terminal 5 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK THROTTLE POSITION SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 73 and electric throttle control actuator terminal 4, ECM
terminal 74 and electric throttle control actuator terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK THROTTLE POSITION SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect joint connector-4.
3. Check the following.
–Continuity between joint connector-4 terminal 1 and engine ground
–Joint connector-4
(Refer toPG-29, "
Harness Layout".)
Refer to Wiring Diagram.
4. Also check harness for short to power.
5. Then reconnect joint connector-4.
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to power in harness or connectors.
7.CHECK THROTTLE POSITION SENSOR
Refer toEC-152, "
Component Inspection".
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.Continuity should exist.
Continuity should exist.
Continuity should exist.

DTC P0121 APP SENSOR
EC-155
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
On Board Diagnosis LogicEBS00B3L
FAI L-S AFE MO DE
ECM enters in fail-safe mode when the malfunction is detected.
DTC Confirmation ProcedureEBS00B3M
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 10V at idle.
WITH CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If 1st trip DTC is detected, go toEC-157, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “With CONSULT-II” above.
76 B/WAccelerator pedal
position sensor 2[Ignition switch "ON"]lAccelerator pedal fully released0.09 - 0.48V
[Ignition switch "ON"]
lAccelerator pedal fully depressedMore than 1.9V
86 LAccelerator pedal
position sensor 2
ground[Ignition switch “ON”]Approximately 0V TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0121
0121Accelerator pedal posi-
tion sensor circuitA)An excessively low or high voltage from the
accelerator pedal position sensor 1 is sent to
ECM.
lHarness or connectors
(The accelerator pedal position
sensor 1 or 2 circuit is open or
shorted.)
lElectric throttle control actuator B)An excessively low or high voltage from the
accelerator pedal position sensor 2 is sent to
ECM.
C)A difference between signals from sensor 1 and
2 is out of the specified range.
Detected items Engine operating condition in fail-safe mode
Malfunction A The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the
idle position to be within +10 degrees.
The ECM regulates an opening speed of approx. 5 seconds to an opening of 10 degrees.
So, the acceleration will be poor. Malfunction B
Malfunction C
SEF058Y

EC-158
[QR (WITH EURO-OBD)]
DTC P0121 APP SENSOR
4.CHECK APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between APP sensor terminal 1, 3 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors M61, F41
lHarness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 75 and APP sensor terminal 5, ECM terminal 76 and
APP sensor terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors M61, F41
lHarness for open or short between ECM and accelerator pedal position sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK APP SENSOR
Refer toEC-159, "
Component Inspection".
OK or NG
OK >> GO TO 9.
NG >> Replace accelerator pedal assembly.
9.CHECK INTERMITTENT INCIDENT
Refer toEC-107, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END Continuity should exist.
Continuity should exist.

DTC P0121 APP SENSOR
EC-159
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Component InspectionEBS00B3P
ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Turn ignition switch "ON".
3. Check voltage between ECM terminals 75 (APP sensor 1 sig-
nal), 76 (APP sensor 2 signal) and engine ground under the fol-
lowing conditions.
4. If NG, replace accelerator pedal assembly.
Remove and InstallationEBS00B3Q
ACCELERATOR PEDAL
Refer toACC-2, "ACCELERATOR CONTROL SYSTEM".
Terminal Accelerator pedal Voltage
75
(Accelerator pedal position
sensor 1)Fully released 0.41 - 0.71V
Fully depressed More than 3.9V
76
(Accelerator pedal position
sensor 2)Fully released 0.09 - 0.48V
Fully depressed More than 1.9V
PBIB0561E

DTC P0132 HO2S1
EC-163
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Diagnostic ProcedureEBS00B43
1.RETIGHTEN HEATED OXYGEN SENSOR 1
Loosen and retighten heated oxygen sensor 1.
>> GO TO 2.
2.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 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK HO2S1 CONNECTOR FOR WATER
1. Turn ignition switch “OFF”.
2. Disconnect heated oxygen sensor 1 harness connector.
3. Check connectors for water.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace harness or connectors.
4.CHECK HEATED OXYGEN SENSOR 1
Refer toEC-164, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace heated oxygen sensor 1.
5.CHECK INTERMITTENT INCIDENT
Refer toEC-107, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END Tightening torque: 40 - 50 N·m (4.1 - 5.1 kg-m, 30 - 37 ft-lb)
PBIB0499E
Continuity should exist.
Continuity should not exist.
PBIB0500E
Water should not exist.

DTC P0133 HO2S1
EC-167
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
On Board Diagnosis LogicEBS00B49
To judge the malfunction of heated oxygen sensor 1, this diagnosis
measures response time of heated oxygen sensor 1 signal. The time
is compensated by engine operating (speed and load), fuel feedback
control constant, and heated oxygen sensor 1 temperature index.
Judgment is based on whether the compensated time (heated oxy-
gen sensor 1 cycling time index) is inordinately long or not.
DTC Confirmation ProcedureEBS00B4A
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:
lAlways perform at a temperature above-10°C(14°F).
lBefore 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. Stop engine and wait at least 10 seconds.
3. Turn ignition switch “ON” and select “HO2S1 (B1) P0133" of “HO2S1” in “DTC WORK SUPPORT” mode
with CONSULT-II.
4. Touch “START”.
5. Start engine and 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 5.
SEF010V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0133
0133Heated oxygen sensor
1 circuit slow responseThe response of the voltage signal from the
sensor takes more than the specified time.
lHarness or connectors
(The sensor circuit is open or shorted)
lHeated oxygen sensor 1
lHeated oxygen sensor 1 heater
lFuel pressure
lInjectors
lIntake air leaks
lExhaust gas leaks
lPCV valve
lMass air flow sensor
SEF338Z

DTC P0133 HO2S1
EC-171
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
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

DTC P0134 HO2S1
EC-175
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
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