Fuel Filler Door Release Inoperative

Fuel Filler Door Release Inoperative

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of the diagnostic category.



Diagnostic Fault Information






Circuit/System Description

The fuel door latch actuator shares the circuit with the driver door latch assembly. The body control module (BCM), upon receipt of a lock switch lock or unlock signal, will switch the appropriate door lock actuator, as well as a fuel filler door release actuator control circuits to battery positive voltage. The opposing side of the door lock and fuel filler door release actuators is connected to ground provided by the I/P fuse block through the other door lock actuator control circuit and the doors, along with the fuel filler door release, will lock or unlock as commanded.


Reference Information
Schematic Reference

Door Lock/Indicator Schematics (Door Lock/Indicator Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

Fuel Fill Door Description and Operation (Description and Operation)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information


Circuit/System Verification

Observe the operation of the power door locks while using the driver door lock switch. All doors and the fuel filler door should LOCK and UNLOCK.

If any power door lock does not operate as commanded, Refer to Power Door Locks Inoperative (Power Door Locks Inoperative) .



Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the fuel door latch actuator.
2. Connect a test lamp between control circuit terminal A and control circuit terminal B.
3. Ignition ON, command the door locks to LOCK and UNLOCK by using the driver door lock switch. The test lamp should illuminate while commanding the LOCK and UNLOCK states.

• If the test lamp is always ON, test both control circuits for a short to voltage.
• If the test lamp remains OFF, test both control circuits for a short to ground or open/high resistance.

4. If all circuits test normal, test or replace the fuel door latch actuator.



Component Testing

1. Install a 15-amp fused jumper wire between the lock control terminal A and 12 volts. Momentarily install a jumper wire between the unlock control terminal B and ground. The fuel door latch actuator should perform the LOCK/ UNLOCK function.

• If the function does not perform as specified, replace the fuel door latch actuator.

2. Reverse the jumper wires. The fuel door latch actuator should perform the UNLOCK/LOCK function.

• If the function does not perform as specified, replace the fuel door latch actuator.




Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.


Fuel Tank Filler Door Latch Replacement (Service and Repair)