2003 NISSAN X-TRAIL diagram

EC-1262
[YD (WITHOUT EURO-OBD)]
MAIN POWER SUPPLY AND GROUND CIRCUIT

Wiring DiagramEBS011XS
TBWA0563E

MAIN POWER SUPPLY AND GROUND CIRCUIT
EC-1263
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

Diagnostic ProcedureEBS011XT
1. INSPECTION START
Start engine.
Is engine running?
Ye s o r N o
Ye s > > G O T O 5 .
No >> GO TO 2.
2. CHECK ECM POWER SUPPLY CIRCUIT-I
1. Turn ignition switch ON.
2. Check voltage between ECM terminals 107, 108 and ground
with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.

Fuse block (J/B) connector M1

10A fuse

Harness for open or short between ECM and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminals 1, 2, 3, 114 and body ground. Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to power in harness or connectors.Voltage: Battery voltage
MBIB0610E
Continuity should exist.

MAIN POWER SUPPLY AND GROUND CIRCUIT
EC-1265
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

8. CHECK OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 105, 113 and ECM relay terminal 2. Refer to Wiring
Diagram.
3. 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 F30, M63

Harness for open or short between ECM and ECM relay.
>> Repair open circuit or short to ground or short to power in harness or connectors.
10. CHECK ECM POWER SUPPLY CIRCUIT-IV
1. Check harness continuity between ECM terminal 119 and ECM relay terminal 5, ECM terminal 120 and
ECM relay terminal 7. Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.
11 . DETECT MALFUNCTIONING PART
Check the following.

Harness connectors F30, M63

Harness for open or short between ECM and ECM relay.
>> Repair open circuit or short to ground or short to power in harness or connectors.
12. CHECK ECM RELAY
Refer to EC-1266, "
Component Inspection" .
OK or NG
OK >> GO TO 13.
NG >> Replace ECM relay.Continuity should exist.
Continuity should exist.

EC-1266
[YD (WITHOUT EURO-OBD)]
MAIN POWER SUPPLY AND GROUND CIRCUIT

13. CHECK ECM POWER SUPPLY CIRCUIT-V
Check voltage between ECM terminal 121 and ground with CON-
SULT-II or tester.
OK or NG
OK >> GO TO 15.
NG >> GO TO 14.
14. DETECT MALFUNCTIONING PART
Check the following.

20A fuse

Harness connectors E116, M75 (LHD models)

Harness connectors E105, M13 (RHD models)

Harness for open or short between ECM and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
15. CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminals 1, 2, 3, 114 and body ground. Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 16.
NG >> Repair open circuit or short to power in harness or connectors.
16. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS011XU
ECM RELAY
1. Apply 12V direct current between ECM relay terminals 1 and 2.
2. Check continuity between relay terminals 3 and 5, 6 and 7.
3. If NG, replace ECM relay.Voltage: Battery voltage
MBIB0026E
Continuity should exist.
Condition Continuity
12V direct current supply between ter-
minals 1 and 2Ye s
OFF No
PBIB0077E

DTC U1000 CAN COMMUNICATION LINE
EC-1269
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

Wiring DiagramEBS011XZ
TBWA0564E

EC-1282
[YD (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

Wiring DiagramEBS011YL
TBWA0565E

EC-1284
[YD (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

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

Harness connectors F30, M63

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

Harness for open or short between mass air flow sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK MAFS GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between mass air flow sensor terminal 3 and ECM terminal 73.
Refer to Wiring Diagram.
4. 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.
PBIB1891E
Voltage: Battery voltage
PBIB1168E
Continuity should exist.

DTC P0102, P0103 MAF SENSOR
EC-1285
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

5. CHECK MAFS INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between mass air flow sensor terminal 4 and ECM terminal 54. Refer to Wiring
Diagram.
2. 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 MASS AIR FLOW SENSOR
Refer to EC-1285, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace mass air flow sensor.
7. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS011YN
MASS AIR FLOW SENSOR
1. Reconnect harness connectors disconnected.
2. Start engine and warm it up to normal operating temperature.
3. Check voltage between ECM terminal 54 (Mass air flow sensor
signal) and ground.
4. If the voltage is out of specification, disconnect MAF sensor har-
ness connector and connect it again.
Then repeat above check.
Removal and InstallationEBS011YO
MASS AIR FLOW SENSOR
Refer to EM-133, "AIR CLEANER AND AIR DUCT" . Continuity should exist.
Condition Voltage V
Ignition switch ON (Engine stopped.) Approx. 0.7
Idle (Engine is warmed up to normal
operating temperature.)1.8 - 2.3
2,000 rpm (Engine is warmed up to nor-
mal operating temperature.)2.5 - 3.0
SEF865T