2003 NISSAN X-TRAIL diagram

DTC P1260 - P1267 FUEL INJECTOR ADJUSTMENT RESISTOR
EC-1117
[YD (WITH EURO-OBD)]
C
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MA
EC

Wiring DiagramEBS011DC
TBWA0575E

EC-1124
[YD (WITH EURO-OBD)]
DTC P1268 - P1271 FUEL INJECTOR

Wiring DiagramEBS011DL
TBWA0569E

DTC P1268 - P1271 FUEL INJECTOR
EC-1125
[YD (WITH EURO-OBD)]
C
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EC

Diagnostic ProcedureEBS011DM
1. CHECK FUEL INJECOR POWER SUPPLY CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect fuel injector harness connector.
4. Check harness continuity between the following terminals corre-
sponding to the malfunctioning cylinder. Refer to Wiring Dia-
gram.
5. 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 ECM OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between the following terminals corresponding to the malfunctioning cylinder.
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 INJECTOR-I
Refer to EC-1126, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace fuel injector.
DTCTe r m i n a l
Cylinder
ECM Fuel injector
P1268 4 3 No.1
P1269 5 3 No.2
P1270 5 3 No.3
P1271 4 3 No.4
Continuity should exist.
PBIB1896E
DTCTe r m i n a l
Cylinder
ECM Fuel injector
P1268 42, 43 4 No.1
P1269 21, 22 4 No.2
P1270 23, 24 4 No.3
P1271 40, 41 4 No.4
Continuity should exist.

DTC P1272 FUEL PUMP
EC-1129
[YD (WITH EURO-OBD)]
C
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MA
EC

Wiring DiagramEBS012AJ
TBWA0574E

DTC P1272 FUEL PUMP
EC-1131
[YD (WITH EURO-OBD)]
C
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EC

3. CHECK FUEL PUMP POWER SUPPLY 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.
5. CHECK FUEL PUMP
Refer to EC-1132, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> GO TO 8.
6. CHECK FUEL RAIL PRESSURE SENSOR
Refer to EC-1002, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace fuel rail.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-936, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >> GO TO 8.
NG >> Repair or replace.
PBIB1943E
Continuity should exist.
Continuity should exist.

EC-1136
[YD (WITH EURO-OBD)]
DTC P1273 FUEL PUMP

Wiring DiagramEBS011DZ
TBWA0574E

DTC P1273 FUEL PUMP
EC-1137
[YD (WITH EURO-OBD)]
C
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EC

Diagnostic ProcedureEBS011E0
1. CHECK FUEL TRANSPORT PUMP OPERATION
Perform Diagnostic Procedure for fuel transport pump. Refer to EC-1194
.
OK or NG
OK >> GO TO 2.
NG >> Follow the instruction of Diagnostic Procedure for fuel transport 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. Perform Fuel Pump Learning value clearing. Refer to EC-890, "
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-1135, "
DTC Confirmation Procedure" , again.
7. Is 1st trip DTC detected again?
With GST
1. Turn ignition switch ON.
2. Perform Fuel Pump Learning value clearing. Refer to EC-890, "
Fuel Pump Learning Value Clearing" .
3. Start engine and let it idle for at least 60 seconds.
4. Select MODE 4 with GST.
5. Touch “ERASE”.
6. Perform EC-1135, "
DTC Confirmation Procedure" , again.
7. Is 1st trip DTC detected again?
Ye s o r N o
Ye s > > G O T O 3 .
No >>INSPECTION END
3. CHECK FUEL PUMP POWER SUPPLY 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.
Continuity should exist.
PBIB1943E

EC-1138
[YD (WITH EURO-OBD)]
DTC P1273 FUEL PUMP

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.
5. CHECK FUEL RAIL PRESSURE SENSOR
Refer to EC-1002, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace fuel rail.
6. CHECK FUEL PUMP
Refer to EC-1138, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. REPLACE FUEL PUMP
1. Replace fuel pump.
2. Perform Fuel Pump Learning Valve Clearing. Refer to EC-890, "
Fuel Pump Learning Value Clearing" .
>>INSPECTION END
8. CHECK INTERMITTENT INCIDENT
Refer to EC-936, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS011E1
FUEL PUMP
1. Check continuity between fuel supply pump terminals 1 and 2.
2. If NG, replace fuel pump.
Removal and InstallationEBS011E2
FUEL PUMP
Refer to EM-161, "FUEL PUMP" . Continuity should exist.
Continuity should exist.
SEF807Z