P0462-FUEL LEVEL SENSOR 1 LOW CIRCUIT

For a complete wiring diagram Refer to Section 8W

When Monitored:
With the ignition on and battery voltage greater than 10.4 volts.
Set Condition:
The PCM detects that the Fuel Level Sensor input voltage is below the minimum acceptable value.

Possible Causes

INTERMITTENT DTC

(N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO GROUND

(N4) FUEL LEVEL SIGNAL 1 CIRCUIT OPEN OR HIGH RESISTANCE

FUEL LEVEL SENSOR

INSTRUMENT CLUSTER (CCN)

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - STANDARD PROCEDURE)

Diagnostic Test

1.DTC IS ACTIVE

WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.

Is the status Active for this DTC?

Yes

Go To 2

Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

2.(N4) FUEL LEVEL SIGNAL 1 CIRCUIT SHORTED TO GROUND

Is the resistance above 100 ohms?

Yes

Go to 3

Repair the (N4) Fuel Level Signal 1 circuit for a short to ground.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

3.(N4) FUEL LEVEL SIGNAL 1 CIRCUIT OPEN CIRCUIT OR HIGH RESISTANCE

Is the resistance below 5.0 ohms?

Yes

Go to 4

Repair the (N4) Fuel Level Signal 1 circuit for an open circuit or high resistance.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

4.FUEL LEVEL SENSOR

Is the voltage above 4.5 volts with the Fuel Level Sensor harness disconnected?

Yes

Replace the Fuel Level Sensor in accordance with the service information.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Go to 5

5.INSTRUMENT CLUSTER (CCN)

Were any problems found?

Yes

Repair as necessary.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).

Replace and program the Instrument Cluster (CCN) in accordance with the Service Information.
Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - STANDARD PROCEDURE).