Infiniti F50. Manual — part 436
DTC P0460 FUEL LEVEL SENSOR
EC-385
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EC
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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EC
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"
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