For 1990-2009 cars

Note: The following steps must be completed before using the symptom tables.

1. Perform the Diagnostic System Check - Vehicle

• | There are no DTCs set

• | The control modules can communicate via the serial data link

2. Review the system operation in order to familiarize yourself with the system functions. Refer to the following systems description:

• | Door Ajar Indicator Description and Operation

• | Fuel Fill Door Description and Operation

• | Luggage Compartment Description and Operation

• | Power Door Locks Description and Operation

• | Rear Hatch/Gate Description and Operation

### Visual/Physical Inspection

• | Inspect for aftermarket devices which may affect the operation of the system. Refer to Checking Aftermarket Accessories

• | Inspect the easily accessible or visible system components for obvious damage or conditions which may cause the symptom.

### Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections

### Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

• | Fuel Filler Door Release Malfunction

• | Door Ajar Indicator Malfunction

• | Power Door Locks Malfunction

• | Trunk/Liftgate Release Malfunction

• | Trunk/Liftgate Ajar Indicator Malfunction