Page 802 of 4179
EC-424
[QR (WITH EURO-OBD)]
IGNITION SIGNAL
8. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E61, F38
20A fuse
Harness for open or short between ECM relay and battery
>> Repair or replace harness or connectors.
9. CHECK ECM RELAY
Refer to EC-426, "
Component Inspection" .
OK or NG
OK >> GO TO 17.
NG >> Replace ECM relay.
10. CHECK CONDENSER GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Check harness continuity between condenser terminal 2 and ground.
Refer to Wiring diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 11.
NG >> Repair open circuit or short to power in harness or connector.
11 . CHECK CONDENSER
Refer to EC-426, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace condenser.Continuity should exist.
Page 803 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual IGNITION SIGNAL
EC-425
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
12. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. NISSAN X-TRAIL 2003 Service Repair Manual IGNITION SIGNAL
EC-425
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
12. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3.](/manual-img/5/57404/w960_57404-802.png)
IGNITION SIGNAL
EC-425
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
12. CHECK IGNITION COIL POWER SUPPLY CIRCUIT-V
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect ignition coil harness connector.
4. Turn ignition switch ON.
5. Check voltage between ignition coil terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.
13. DETECT MALFUNCTIONING PART
Check harness for open or short between ignition coil and ECM relay.
>> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK IGNITION COIL GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ignition coil terminal 2 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to power.
OK or NG
OK >> GO TO 15.
NG >> Repair open circuit or short to power in harness or connectors.
15. CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals 60, 61, 79, 80 and ignition coil terminal 3.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 16.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB1969E
Voltage: Battery voltage
SEF107S
Continuity should exist.
Continuity should exist.
Page 807 of 4179
INJECTOR CIRCUIT
EC-429
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Wiring DiagramEBS010VD
TBWA0630E
Page 810 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual EC-432
[QR (WITH EURO-OBD)]
INJECTOR CIRCUIT
3. CHECK INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
3. Turn ignition switch ON.
4. Check voltag NISSAN X-TRAIL 2003 Service Repair Manual EC-432
[QR (WITH EURO-OBD)]
INJECTOR CIRCUIT
3. CHECK INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
3. Turn ignition switch ON.
4. Check voltag](/manual-img/5/57404/w960_57404-809.png)
EC-432
[QR (WITH EURO-OBD)]
INJECTOR CIRCUIT
3. CHECK INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
3. Turn ignition switch ON.
4. Check voltage between injector terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M61, F41
Harness connectors F1, F101
Fuse block (J/B) connector M1
10A fuse
Harness for open or short between injector and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between injector terminal 2 and ECM terminals 22, 23, 41, 42.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
PBIB1970E
Voltage: Battery voltage
PBIB0582E
Continuity should exist.
Page 814 of 4179
EC-436
[QR (WITH EURO-OBD)]
VIAS
Wiring DiagramEBS011HW
TBWA0651E
Page 818 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual EC-440
[QR (WITH EURO-OBD)]
VIAS
5. CHECK VACUUM TANK
Refer to EC-441, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace vacuum tank.
6. CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY NISSAN X-TRAIL 2003 Service Repair Manual EC-440
[QR (WITH EURO-OBD)]
VIAS
5. CHECK VACUUM TANK
Refer to EC-441, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace vacuum tank.
6. CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY](/manual-img/5/57404/w960_57404-817.png)
EC-440
[QR (WITH EURO-OBD)]
VIAS
5. CHECK VACUUM TANK
Refer to EC-441, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace vacuum tank.
6. CHECK VIAS CONTROL SOLENOID VALVE POWER SUPPLY CIRCUIT
1. Disconnect VIAS control solenoid valve harness connector.
2. Turn ignition switch ON.
3. Check voltage between VIAS control solenoid valve terminal 1
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. DETECT MALFUNCTIONING PART
Check harness for open or short between VIAS control solenoid valve and ECM relay
>> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK VIAS 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 VIAS control solenoid valve terminal 2 and ECM terminal 6.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB0947E
Voltage: Battery voltage
PBIB0173E
Continuity should exist.
Page 822 of 4179
EC-444
[QR (WITH EURO-OBD)]
FUEL PUMP CIRCUIT
Wiring DiagramEBS010VJ
LHD MODELS
TBWA0632E
Page 826 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual EC-448
[QR (WITH EURO-OBD)]
FUEL PUMP CIRCUIT
3. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M17, B1
Fuse block (J/B) connector M1
15A fuse
Harness for open or short betwe NISSAN X-TRAIL 2003 Service Repair Manual EC-448
[QR (WITH EURO-OBD)]
FUEL PUMP CIRCUIT
3. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M17, B1
Fuse block (J/B) connector M1
15A fuse
Harness for open or short betwe](/manual-img/5/57404/w960_57404-825.png)
EC-448
[QR (WITH EURO-OBD)]
FUEL PUMP CIRCUIT
3. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M17, B1
Fuse block (J/B) connector M1
15A fuse
Harness for open or short between fuel pump relay and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK CONDENSER CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Check harness continuity between fuel pump relay terminal 3 and condenser terminal 1, condenser termi-
nal 2 and ground.
4. 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.
Harness connectors B22, B128 (RHD models)
Harness for open or short between fuel pump relay and condenser
Harness for open or short between condenser and ground
>> Repair open circuit or short to ground or short to power in harness connectors.
6. CHECK CONDENSER
Refer to EC-450, "
Component Inspection" .
OK or NG
OK >> GO TO 7.
NG >> Replace condenser.
7. CHECK FUEL PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Disconnect “fuel level sensor unit and fuel pump” harness con-
nector.
2. Check harness continuity between fuel pump relay terminal 3
and “fuel level sensor unit and fuel pump” terminal 5, “fuel level
sensor unit and fuel pump” terminal 3 and ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.Continuity should exist.
Continuity should exist.PBIB0506E