Page 2016 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual EC-1612
[YD (WITHOUT EURO-OBD)]
DTC P1273 FUEL PUMP
2. PERFORM FUEL PUMP LEARNING VALUE CLEARING
NOTE:
If the DTC is detected because of air mixed with fuel (i.e.: caused by lack of fuel), it may be NISSAN X-TRAIL 2005 Service Repair Manual EC-1612
[YD (WITHOUT EURO-OBD)]
DTC P1273 FUEL PUMP
2. PERFORM FUEL PUMP LEARNING VALUE CLEARING
NOTE:
If the DTC is detected because of air mixed with fuel (i.e.: caused by lack of fuel), it may be](/manual-img/5/57403/w960_57403-2015.png)
EC-1612
[YD (WITHOUT EURO-OBD)]
DTC P1273 FUEL PUMP
2. PERFORM FUEL PUMP LEARNING VALUE CLEARING
NOTE:
If the DTC is detected because of air mixed with fuel (i.e.: caused by lack of fuel), it may become normal by
performing following procedure.
With CONSULT-II
1. Turn ignition switch ON.
2. Clear fuel pump learning value. Refer to EC-1370, "
Fuel Pump Learning Value Clearing" .
3. Start engine and let it idle for at least 60 seconds.
4. Select “SELF-DIAG RESULT” mode with CONSULT-II.
5. Touch “ERASE”.
6. Perform EC-1609, "
DTC Confirmation Procedure" , again.
7. Is DTC detected again?
Without CONSULT-II
1. Turn ignition switch ON.
2. Clear fuel pump learning value. Refer to EC-1370, "
Fuel Pump Learning Value Clearing" .
3. Start engine and let it idle for at least 60 seconds.
4. Erase the Diagnostic Test Mode II (Self-diagnostic results) memory. Refer to EC-1375
.
5. Perform EC-1609, "
DTC Confirmation Procedure" , again.
6. Is DTC displayed again?
Ye s o r N o
Yes >> GO TO 3.
No >>INSPECTION END
3. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector and fuel pump harness
connectors.
3. Check harness continuity between ECM terminal 10 and fuel
pump terminal 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and 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 FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 29 and fuel pump terminal 1.
Refer to Wiring Diagram.
2. 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.
Continuity should exist.
PBIB1943E
Continuity should exist.
Page 2019 of 4555
DTC P1274 FUEL PUMP
EC-1615
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Wiring DiagramEBS0124B
TBWA0574E
Page 2021 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual DTC P1274 FUEL PUMP
EC-1617
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Diagnostic ProcedureEBS0124C
1. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disco NISSAN X-TRAIL 2005 Service Repair Manual DTC P1274 FUEL PUMP
EC-1617
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Diagnostic ProcedureEBS0124C
1. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disco](/manual-img/5/57403/w960_57403-2020.png)
DTC P1274 FUEL PUMP
EC-1617
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Diagnostic ProcedureEBS0124C
1. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector and fuel pump harness
connectors.
3. Check harness continuity between ECM terminal 10 and fuel
pump terminal 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2. CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 29 and fuel pump terminal 1.
Refer to Wiring Diagram.
2. Also check harness for short to ground and 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 FUEL RAIL PRESSURE SENSOR
Refer to EC-1471, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace fuel rail.
4. CHECK FUEL PUMP
Refer to EC-1618, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Valve Clearing. Refer to EC-1370, "
Fuel Pump Learning Value Clearing" .
>>INSPECTION END
6. CHECK INTERMITTENT INCIDENT
Refer to EC-1414, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
PBIB1943E
Continuity should exist.
Page 2024 of 4555
EC-1620
[YD (WITHOUT EURO-OBD)]
DTC P1275 FUEL PUMP
Wiring DiagramEBS0124K
TBWA0574E
Page 2026 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual EC-1622
[YD (WITHOUT EURO-OBD)]
DTC P1275 FUEL PUMP
Diagnostic ProcedureEBS0124L
1. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connecto NISSAN X-TRAIL 2005 Service Repair Manual EC-1622
[YD (WITHOUT EURO-OBD)]
DTC P1275 FUEL PUMP
Diagnostic ProcedureEBS0124L
1. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connecto](/manual-img/5/57403/w960_57403-2025.png)
EC-1622
[YD (WITHOUT EURO-OBD)]
DTC P1275 FUEL PUMP
Diagnostic ProcedureEBS0124L
1. CHECK ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector and fuel pump harness
connectors.
3. Check harness continuity between ECM terminal 10 and fuel
pump terminal 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2. CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 29 and fuel pump terminal 1.
Refer to Wiring Diagram.
2. Also check harness for short to ground and 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 FUEL RAIL PRESSURE SENSOR
Refer to EC-1471, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace fuel rail.
4. CHECK FUEL PUMP
Refer to EC-1623, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Valve Clearing. Refer to EC-1370, "
Fuel Pump Learning Value Clearing" .
>>INSPECTION END
6. CHECK INTERMITTENT INCIDENT
Refer to EC-1414, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
PBIB1943E
Continuity should exist.
Page 2030 of 4555
EC-1626
[YD (WITHOUT EURO-OBD)]
DTC P2135 APP SENSOR
Wiring DiagramEBS0124T
TBWA0730E
Page 2033 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual DTC P2135 APP SENSOR
EC-1629
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2. CHECK APP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Tu NISSAN X-TRAIL 2005 Service Repair Manual DTC P2135 APP SENSOR
EC-1629
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2. CHECK APP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Tu](/manual-img/5/57403/w960_57403-2032.png)
DTC P2135 APP SENSOR
EC-1629
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2. CHECK APP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminals 4, 6 and ground
with CONSULT-II or tester.
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 APP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between APP sensor terminals 3 and ECM terminal 84, APP sensor terminal 1
and ECM terminal 92.
Refer to Wiring Diagram.
4. Also check harness for short to ground and 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 APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 83 and APP sensor terminal 5, ECM terminal 91 and
APP sensor terminal 2.
Refer to Wiring Diagram.
2. 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 APP SENSOR
Refer to EC-1630, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace accelerator pedal assembly.
PBIB1893E
Voltage: Approximately 5.3V
PBIB0560E
Continuity should exist.
Continuity should exist.
Page 2036 of 4555
EC-1632
[YD (WITHOUT EURO-OBD)]
DTC P2146, P2149 FUEL INJECTOR POWER SUPPLY
Wiring DiagramEBS01252
TBWA0733E