Page 812 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual EC-408
[QR (WITH EURO-OBD)]
DTC P1805 BRAKE SWITCH
3. DETECT MALFUNCTIONING PART
Check the following.
15A fuse
Fuse block (J/B) connector M2
Harness for open and short between stop lamp switch an NISSAN X-TRAIL 2005 Service Repair Manual EC-408
[QR (WITH EURO-OBD)]
DTC P1805 BRAKE SWITCH
3. DETECT MALFUNCTIONING PART
Check the following.
15A fuse
Fuse block (J/B) connector M2
Harness for open and short between stop lamp switch an](/manual-img/5/57403/w960_57403-811.png)
EC-408
[QR (WITH EURO-OBD)]
DTC P1805 BRAKE SWITCH
3. DETECT MALFUNCTIONING PART
Check the following.
15A fuse
Fuse block (J/B) connector M2
Harness for open and short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between stop lamp switch terminal 2 and ECM terminal 101.
Refer to Wiring Diagram.
3. 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 STOP LAMP SWITCH
Refer to EC-408, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace stop lamp switch.
6. CHECK INTERMITTENT INCIDENT
Refer to EC-124, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionEBS01FF8
STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check continuity between stop lamp switch terminals 1 and 2 under the following conditions.
If NG, adjust stop lamp switch installation, refer to BR-6, "
BRAKE PEDAL" , and perform step 3 again. Continuity should exist.
Condition Continuity
Brake pedal: Fully released. Should not exist.
Brake pedal: Slightly depressed. Should exist.
PBIB2285E
Page 851 of 4555
IGNITION SIGNAL
EC-447
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
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-449, "
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. Check harness continuity between condenser terminal 2 and ground.
Refer to Wiring diagram.
3. 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-449, "
Component Inspection" .
OK or NG
OK >> GO TO 12.
NG >> Replace condenser.Continuity should exist.
Page 859 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual INJECTOR CIRCUIT
EC-455
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
3. CHECK INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
3. Turn ignition NISSAN X-TRAIL 2005 Service Repair Manual INJECTOR CIRCUIT
EC-455
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
3. CHECK INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect injector harness connector.
3. Turn ignition](/manual-img/5/57403/w960_57403-858.png)
INJECTOR CIRCUIT
EC-455
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
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 875 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual FUEL PUMP CIRCUIT
EC-471
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
3. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M17, B1
Fuse block (J/B) connector M1
15A fuse
Harne NISSAN X-TRAIL 2005 Service Repair Manual FUEL PUMP CIRCUIT
EC-471
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
3. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors M17, B1
Fuse block (J/B) connector M1
15A fuse
Harne](/manual-img/5/57403/w960_57403-874.png)
FUEL PUMP CIRCUIT
EC-471
[QR (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
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-473, "
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
Page 914 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual EC-510
[QR (WITH EURO-OBD)]
ASCD BRAKE SWITCH
4. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector M2
10A fuse
Harness for open or short between ASCD brake switch and fus NISSAN X-TRAIL 2005 Service Repair Manual EC-510
[QR (WITH EURO-OBD)]
ASCD BRAKE SWITCH
4. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector M2
10A fuse
Harness for open or short between ASCD brake switch and fus](/manual-img/5/57403/w960_57403-913.png)
EC-510
[QR (WITH EURO-OBD)]
ASCD BRAKE SWITCH
4. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector M2
10A fuse
Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK ASCD CLUTCH SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD clutch switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between ASCD clutch switch terminal 1 and
ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector M2
10A fuse
Harness for open or short between ASCD clutch switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ASCD clutch switch terminal 2 and ASCD brake 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 8.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
8. CHECK ASCD CLUTCH SWITCH
Refer to EC-513, "
Component Inspection"
OK or NG
OK >> GO TO 15.
NG >> Replace ASCD clutch switch.Voltage: Battery voltage
PBIB0799E
Continuity should exist.
Page 916 of 4555
EC-512
[QR (WITH EURO-OBD)]
ASCD BRAKE SWITCH
12. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector M2
15A fuse
Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
13. CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 14.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
14. CHECK STOP LAMP SWITCH
Refer to EC-513, "
Component Inspection"
OK or NG
OK >> GO TO 15.
NG >> Replace stop lamp switch.
15. CHECK INTERMITTENT INCIDENT
Refer to EC-124, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END Continuity should exist.
Page 1032 of 4555
![NISSAN X-TRAIL 2005 Service Repair Manual EC-628
[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, 6 and ground
with CONSULT NISSAN X-TRAIL 2005 Service Repair Manual EC-628
[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, 6 and ground
with CONSULT](/manual-img/5/57403/w960_57403-1031.png)
EC-628
[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, 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.
Page 1034 of 4555
EC-630
[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-632, "
Component Inspection" .
OK or NG
OK >> GO TO 17.
NG >> Replace ECM relay.Continuity should exist.