Infiniti F50. Manual - part 436

DTC P0460 FUEL LEVEL SENSOR

EC-385

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Wiring Diagram

EBS00MFM

TBWM0158E

EC-386

DTC P0460 FUEL LEVEL SENSOR

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.

Diagnostic Procedure

EBS00MFN

1. 

CHECK FUEL LEVEL SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch “OFF”.

2.

Disconnect fuel level sensor unit and fuel pump harness con-
nector.

3.

Turn ignition switch “ON”.

4.

Check voltage between fuel level sensor unit and fuel pump ter-
minal 5 and ground with CONSULT-II or a tester.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 2.

2. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors M141, B211

●

Harness connectors B61, B261

●

Joint connector-15

●

Harness for open or short between combination meter and fuel level sensor unit and fuel pump

>> Repair open circuit or short to ground or short to power in harness or connectors.

TER-

MINAL 

NO.

WIRE 

COLOR

ITEM

CONDITION

DATA (DC Voltage)

107

B

Fuel level sensor ground

[Engine is running]

●

Idle speed

Approximately 0V

119

R/L

Fuel level sensor

[Ignition switch “ON”]

Approximately 0 - 4.8V
Output voltage varies with fuel 
level.

PBIB1249E

Voltage: Battery 

voltage

PBIB0134E

DTC P0460 FUEL LEVEL SENSOR

EC-387

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3. 

CHECK FUEL LEVEL SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch “OFF”.

2.

Disconnect combination meter harness connectors.

3.

Check harness continuity between fuel level sensor unit and fuel pump terminal 6 and combination meter
terminal 31. Refer to Wiring Diagram.

4.

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 M141, B211

●

Joint connector-15

●

Harness for open or short between combination meter and fuel level sensor unit and fuel pump

>> Repair open circuit or short to ground or short to power in harness or connectors.

5. 

CHECK FUEL LEVEL SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT

1.

Disconnect ECM harness connector.

2.

Check harness continuity between ECM terminal 119 and fuel level sensor unit and fuel pump terminal 5,
ECM terminal 107 and fuel level sensor unit and fuel pump terminal 6. Refer to Wiring Diagram.

3.

Also check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 7.

NG

>> GO TO 6.

6. 

DETECT MALFUNCTIONING PART

Check the following.

●

Harness connectors M135, F105

●

Joint connector-15

●

Harness for open or short between ECM and fuel level sensor and fuel pump

>> Repair open circuit or short to ground or short to power in harness or connectors.

7. 

CHECK FUEL LEVEL SENSOR

Refer to 

DI-26, "CHECK FUEL LEVEL SENSOR UNIT"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Replace fuel level sensor unit.

8. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Continuity should exist.

Continuity should exist.

EC-388

DTC P0460 FUEL LEVEL SENSOR

Removal and Installation

EBS00MFO

FUEL LEVEL SENSOR

Refer to 

FL-3, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"

 .