2003 NISSAN X-TRAIL diagram

EC-574
[QR (WITHOUT EURO-OBD)]
POWER SUPPLY AND GROUND CIRCUIT

6. CHECK ECM POWER SUPPLY CIRCUIT-II
1. Disconnect ECM relay.
2. Check voltage between ECM relay terminals 1 and 6 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E61, F38

20A fuse

Harness for open or short between ECM relay and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 111 and ECM relay terminal 2.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 10.
NG >> GO TO 9.
9. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F41, M61

Harness for open or short between ECM relay and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB1973E
Voltage: Battery voltage
SEF420X
Continuity should exist.

EC-576
[QR (WITHOUT EURO-OBD)]
POWER SUPPLY AND GROUND CIRCUIT

13. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors E60, F36

10A fuse

Harness for open or short between ECM relay and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK ECM POWER SUPPLY CIRCUIT-V
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 119, 120 and ECM relay terminal 5.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 16.
NG >> GO TO 15.
15. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F41, M61

Harness for open or short between ECM relay and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
16. CHECK ECM RELAY
Refer to EC-578, "
Component Inspection" .
OK or NG
OK >> GO TO 17.
NG >> Replace ECM relay.Continuity should exist.

POWER SUPPLY AND GROUND CIRCUIT
EC-577
[QR (WITHOUT EURO-OBD)]
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EC

17. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground three screws on the body.
Refer to EC-578, "
Ground Inspection" .
OK or NG
OK >> GO TO 18.
NG >> Repair or replace ground connections.
18. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 1, 115, 116 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 19.
NG >> Repair open circuit or short to power in harness or connectors.
19. CHECK INTERMITTENT INCIDENT
Refer to EC-570, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
OK or NG
OK >>INSPECTION END
PBIB2021E
Continuity should exist.

EC-580
[QR (WITHOUT EURO-OBD)]
DTC U1000, U1001 CAN COMMUNICATION LINE

Wiring DiagramEBS010XS
TBWA0595E

EC-586
[QR (WITHOUT EURO-OBD)]
DTC P0011 IVT CONTROL

Wiring DiagramEBS0128E
TBWA0612E

EC-588
[QR (WITHOUT EURO-OBD)]
DTC P0011 IVT CONTROL

3. CHECK INTAKE VALVE TIMING CONTROL SOLENOID VALVE OUTPUT SIGNAL CIRCUIT FOR
OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between intake valve timing control solenoid valve terminal 2 and ECM terminal
62. 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 INTAKE VALVE TIMING CONTROL SOLENOID VALVE
Refer to EC-289, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Replace intake valve timing control solenoid valve.
5. CHECK CRANKSHAFT POSITION SENSOR (POS)
Refer to EC-252, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace crankshaft position sensor (POS).
6. CHECK CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-259, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace camshaft position sensor (PHASE).
7. CHECK CAMSHAFT (INTAKE)
Check the following.

Accumulation of debris to the signal plate of camshaft rear end

Chipping signal plate of camshaft rear end
OK or NG
OK >> GO TO 8.
NG >> Remove debris and clean the signal plate of camshaft
rear end or replace camshaft.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-123, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
For wiring diagram refer to CKP sensor (POS) EC-248
and CMP sensor (PHASE) EC-255 .
>>INSPECTION END Continuity should exist.
PBIB0565E

EC-592
[QR (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

Wiring DiagramEBS010Y3
TBWA0598E

DTC P0102, P0103 MAF SENSOR
EC-595
[QR (WITHOUT EURO-OBD)]
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EC

4. CHECK MAF SENSOR POWER SUPPLY CIRCUIT
1. Disconnect MAF sensor harness connector.
2. Turn ignition switch ON.
3. Check voltage between MAF sensor terminals 2 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F41, M61

Harness for open or short between mass air flow sensor and ECM

Harness for open or short between mass air flow sensor and ECM relay
>> Repair harness or connectors.
6. CHECK MAF SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between MAF sensor terminal 3 and ECM terminal 67.
Refer to Wiring Diagram.
4. Also check harness for short to ground and 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.
PBIB0495E
Voltage: Battery voltage
PBIB1168E
Continuity should exist.