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FUEL TRANSPORT PUMP
EC-1191
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ECM Terminals and Reference ValueEBS011PE
Specification data are reference values, and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage)
14 W/PU Fuel level switch[Ignition switch ON]
Some fuel is in the fuel tankApproximately 0V
[Ignition switch ON]
No fuel is in the fuel tankBATTERY VOLTAGE
(11 - 14V)
39 B/OR Fuel transport pump relay[Engine is running]
Some fuel is in the fuel tankApproximately 0V
[Engine is running]
No fuel is in the fuel tankBATTERY VOLTAGE
(11 - 14V)
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EC-1192
[YD (WITH EURO-OBD)]
FUEL TRANSPORT PUMP
Wiring DiagramEBS011PF
LHD MODELS
TBWA0590E
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FUEL TRANSPORT PUMP
EC-1193
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RHD MODELS
TBWA0591E
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EC-1194
[YD (WITH EURO-OBD)]
FUEL TRANSPORT PUMP
Diagnostic ProcedureEBS011PG
1. CHECK OVERALL FUNCTION
1. Turn ignition switch OFF.
2. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
3. Disconnect sub fuel level sensor unit harness connector.
4. Remove sub fuel level sensor unit.
5. Reconnect sub fuel level sensor unit harness connector.
6. Soak fuel level switch in fuel and check operating sound of fuel
transport pump.
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
2. CHECK FUEL TRASPORT PUMP FUNCTION
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Install suitable harness between ECM harness connector termi-
nal 39 and ground.
4. Turn ignition switch ON.
5. Listen the fuel transport pump operating sound.
OK or NG
OK >> GO TO 11.
NG >> GO TO 3.
PBIB1944E
Operating sound should exist.
PBIB2015E
Operating sound should exist.
PBIB2016E
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![NISSAN X-TRAIL 2003 Service Repair Manual FUEL TRANSPORT PUMP
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3. CHECK FUEL TRASPORT PUMP RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Reconnect ECM harness connector.
3. NISSAN X-TRAIL 2003 Service Repair Manual FUEL TRANSPORT PUMP
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3. CHECK FUEL TRASPORT PUMP RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Reconnect ECM harness connector.
3.](/manual-img/5/57404/w960_57404-1572.png)
FUEL TRANSPORT PUMP
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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
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![NISSAN X-TRAIL 2003 Service Repair Manual EC-1196
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FUEL TRANSPORT PUMP
6. DETECT MALFUNCTIONING PART
Check the following.
Harness connector B22, B128
Harness for open or short between fuel transport pump relay and fuel NISSAN X-TRAIL 2003 Service Repair Manual EC-1196
[YD (WITH EURO-OBD)]
FUEL TRANSPORT PUMP
6. DETECT MALFUNCTIONING PART
Check the following.
Harness connector B22, B128
Harness for open or short between fuel transport pump relay and fuel](/manual-img/5/57404/w960_57404-1573.png)
EC-1196
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FUEL TRANSPORT PUMP
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-1197, "
Component Inspection" .
OK or NG
OK >> GO TO 10.
NG >> Replace fuel transport pump relay.
10. CHECK TRANSPORT PUMP
Refer to EC-1197, "
Component Inspection" .
OK or NG
OK >> GO TO 14.
NG >> Replace fuel transport pump.Continuity should exist.
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11 . CHECK FUEL LEVEL SWITCH POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect NISSAN X-TRAIL 2003 Service Repair Manual FUEL TRANSPORT PUMP
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11 . CHECK FUEL LEVEL SWITCH POWER SUPPLY AND GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect](/manual-img/5/57404/w960_57404-1574.png)
FUEL TRANSPORT PUMP
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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-1197, "
Component Inspection"
OK or NG
OK >> GO TO 14.
NG >> Replace sub fuel level sensor unit.
14. CHECK INTERMITTENT INCIDENT
Refer to EC-936, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>>INSPECTION END
Component InspectionEBS011PH
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
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EC-1198
[YD (WITH EURO-OBD)]
FUEL TRANSPORT PUMP
FUEL TRANSPORT PUMP
1. Remove fuel transport pump.
2. Apply battery voltage between fuel transport pump terminal 1 and 2.
3. Check operating sound of fuel transport pump under the following conditions.
4. Listen fuel transport pump operating sound.
FUEL LEVEL SWITCH
1. Confirm that the engine is cooled down and there are no fire hazards near the vehicle.
2. Check continuity between sub fuel level sensor unit terminal 2
and 4 under the following conditions.
Removal and InstallationEBS011PI
FUEL TRANSPORT PUMP
Refer to FL-23, "FUEL TANK" .
SUB FUEL LEVEL SENSOR UNIT
Refer to FL-19, "FUEL LEVEL SENSOR UNIT" .
Conditions Operating sound
12V direct current supply between fuel transport pump
terminals 1 and 2Ye s
No current supply No
Conditions Continuity
Fuel level switch is soaked in fuel. Yes
Fuel level switch is not soaked in fuel. No
PBIB2015E