P0460

B1: CHECK THE VOLTAGE SUPPLY TO THE FUEL LEVEL SENSORS

1. Switch the ignition to the RUN position.
2. Measure the voltage at the fuel level sensor electrical connector between:
FP3 pin 4, (NR) and GROUND
FP4 pin 4, (NR) and GROUND

Is the voltage greater than 10.5 Volts?

Yes
Go to B2

No
Go to B4


B2: CHECK THE GROUND SUPPLY TO THE FUEL LEVEL SENSORS
1. Switch the ignition to the OFF position.
2. Measure the resistance at the fuel level sensor electrical connector between:
FP3 pin 2, (WU) and GROUND
FP4 pin 2, (WR) and GROUND

Is the resistance less than 0.5 Ohms?

Yes
Go to B3

No
REPAIR the relevant circuit. CLEAR DTC. TEST system for normal operation.


B3: CHECK THE RESISTANCE AT THE RIGHT-HAND SIDE FUEL LEVEL SENSOR

1. REMOVE the right-hand side fuel level sensor. For additional information, refer to Fuel Pump / Module - Fuel Delivery.
2. Measure the resistance between the sensor electrical connectors FP4 pin 4 and FP4 pin 2.

Is the resistance between 16 and 160 Ohms?

Yes
INSTALL a new left-hand side fuel level sensor. CLEAR DTC. TEST the system for normal operation.

No
INSTALL a new right-hand side fuel level sensor. CLEAR DTC. TEST the system for normal operation.


B4: CHECK THE CONTINUITY BETWEEN THE FUEL LEVEL SENSOR ELECTRICAL CONNECTOR FP3-4, FP4-4 AND CA103-23 AT THE REAR ELECTRONICS MODULE

1. Switch the ignition to the OFF position.
2. Measure the fuel level sensor positive supply circuit resistance between: FP3 pin 4, (NU) and CA103 pin 23, (NR) FP4 pin 4, (NR) and CA103 pin 23, (NR)

Is the resistance less than 0.5 Ohms?

Yes
INSTALL a new rear electronic module. CLEAR DTC. TEST the system for normal operation.

No
REPAIR the relevant circuit. CLEAR DTC. TEST the system for normal operation.