Circuit Description
The fuel level sensor changes resistance based on fuel level. The IPC monitors the signal circuit of the fuel level sensor in order to determine fuel level. When the fuel tank is full, the sensor resistance is high and the IPC senses a high signal voltage. When the fuel tank is empty, the sensor resistance is low and the IPC senses a low signal voltage. The IPC uses the signal circuit of the fuel level sensor in order to determine fuel gage position. The IPC sends the fuel level percent via the class 2 serial data circuit to the PCM for misfire and EVAP diagnostics.
This diagnostic tests for a stuck fuel level sensor signal. The IPC sets this DTC if the fuel level sensor signal appears to be stuck based on a lack of signal variation expected during normal operation.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The IPC does not detect a change in fuel level of at least 1.0 L (0.26 gal) over a distance of 161 km (100 mi).
Action Taken When the DTC Sets
The fuel gage defaults to empty.
Conditions for Clearing the DTC
| • | The DTC becomes history when the conditions for setting the DTC are no longer present. |
| • | The IPC receives the clear code command from the scan tool. |
Step | Action | Value(s) | Yes | No | ||||
|---|---|---|---|---|---|---|---|---|
Schematic Reference: Instrument Cluster Schematics | ||||||||
1 | Did you perform the Instrument Cluster Diagnostic System Check? | -- | Go to Step 2 | |||||
2 |
Did you find and correct the condition? | -- | Go to Step 4 | Go to Step 3 | ||||
3 | Replace the fuel level sensor. Refer to Fuel Level Sensor Replacement in Engine Controls. Did you complete the replacement? | -- | Go to Step 4 | -- | ||||
4 |
Does the DTC reset? | -- | Go to Step 2 | System OK | ||||
