2003 NISSAN X-TRAIL diagram

EC-1484
[YD (WITHOUT EURO-OBD)]
PSP SWITCH

Wiring DiagramEBS0126D
TBWA0583E

PSP SWITCH
EC-1485
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

Diagnostic ProcedureEBS0126E
1. CHECK OVERALL FUNCTION
With CONSULT-II
1. Start engine.
2. Check “PW/ST SIGNAL” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK POWER STEERING PRESSURE SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect power steering pressure switch harness connector.
3. Check harness continuity between power steering pressure
switch terminal 2 and ground. Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to power in harness or con-
nectors.
3. CHECK POWER STEERING PRESSURE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 111 and power steering pressure switch terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.

Harness connectors M63, F30

Harness for open and short between power steering pressure switch and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
Conditions PW/ST SIGNAL
Steering wheel is in neutral position OFF
Steering wheel is turned ON
PBIB0434E
Continuity should exist.
PBIB1904E
Continuity should exist.

FUEL TRANSPORT PUMP
EC-1489
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

Wiring DiagramEBS0126I
LHD MODELS
TBWA0590E

EC-1492
[YD (WITHOUT EURO-OBD)]
FUEL TRANSPORT PUMP

3. CHECK FUEL TRASPORT PUMP RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Reconnect ECM harness connector.
3. Disconnect fuel transport pump relay.
4. Turn ignition switch ON.
5. Check voltage between fuel transport pump relay terminals 1, 5
and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PERT
Check the following.

Harness connectors M17, B1

Fuse block (J/B) connectors M1

15A fuse

Harness for open or short between fuse and fuel transport pump relay
>> Repair harness or connectors.
5. CHECK FUEL TRANSPORT PUMP POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND
SHORT
1. Turn ignition switch OFF.
2. Disconnect fuel transport pump harness connector.
3. Check harness continuity between fuel transport pump relay ter-
minal 3 and fuel transport pump terminal 1 and between fuel
transport pump terminal 2 and ground. 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.
PBIB1933E
Voltage: Battery voltage
PBIB0471E
Continuity should exist.
PBIB1931E

FUEL TRANSPORT PUMP
EC-1493
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

6. DETECT MALFUNCTIONING PART
Check the following.

Harness connector B22, B128

Harness for open or short between fuel transport pump relay and fuel transport pump

Harness for open or short between fuel transport pump and ground
>> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK FUEL TRANSPORT PUMP RELAY OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 39 and fuel transport pump 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 9.
NG >> GO TO 8.
8. DETECT MALFUNSTIONING PART
Check the following.

Harness connector M17, B1 (LHD models)

Harness connector M18, B2 (RHD models)

Harness connector M63, F30

Harness for open or short between ECM and fuel transport pump relay
>> Repair open circuit or short to ground or short to power in harness or connectors.
9. CHECK FUEL TRANSPORT PUMP RELAY
Refer to EC-1494, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace fuel transport pump relay.
10. CHECK TRANSPORT PUMP
Refer to EC-1494, "
Component Inspection" .
OK or NG
OK >> GO TO 14.
NG >> Replace fuel transport pump.Continuity should exist.

EC-1494
[YD (WITHOUT EURO-OBD)]
FUEL TRANSPORT PUMP

11 . CHECK FUEL LEVEL SWITCH POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect sub fuel level sensor unit harness connector.
4. Check harness continuity between ECM terminal 14 and sub
fuel level sensor unit terminal 2, between sub fuel level sensor
unit terminal 4 and ground. Refer to Wiring Diagram.
5. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> GO TO 8.
12. DETECT MALFUNCTIONING PART
Check the following.

Harness connector F30, M63

Harness connector M78, B105 (LHD models)

Harness connectors M18, B2 (RHD models)

Harness for open or short between sub fuel level sensor unit and ground.
>> Repair open circuit or short to ground or short to power in harness or connectors.
13. CHECK FUEL LEVEL SWITCH
Refer to EC-1494, "
Component Inspection"
OK or NG
OK >> GO TO 14.
NG >> Replace sub fuel level sensor unit.
14. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>>INSPECTION END
Component InspectionEBS0126K
FUEL TRANSPORT PUMP RELAY
Check continuity between terminals 3 and 5 under the following coni-
tions.Continuity should exist.
PBIB1944E
Conditions Continuity
12V direct current supply between terminals 1 and 2 Yes
No current supply No
PBIB0098E

EC-1496
[YD (WITHOUT EURO-OBD)]
START SIGNAL

START SIGNALPFP:48750
Wiring DiagramEBS0126M
TBWA0582E

START SIGNAL
EC-1497
[YD (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC

Diagnostic ProcedureEBS0126N
1. CHECK START SIGNAL OVERALL FUNCTION
With CONSULT-II
1. Turn ignition switch ON.
2. Check “START SIGNAL” in “DATA MONITOR” mode with CON-
SULT-II under the following conditions.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK START SIGNAL INPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector and ignition switch harness connector.
3. Check harness continuity between ECM terminal 99 and ignition switch terminal 6.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECT MALFUNCTIONING PART
Check the following.

10A fuse

Fuse block (J/B) connectors M1, E102

Harness for open or short between ECM and ignition switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-1260, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Condition START SIGNAL
Ignition switch ON OFF
Ignition switch START ON
PBIB0433E
Continuity should exist.