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

1. Perform the Diagnostic System Check - Vehicle, before using the Symptom Tables in order to verify that all of the following are true:

•	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 Power Door Locks Description and Operation.

•	Refer to Luggage Compartment Description and Operation.

•	Refer to Door Ajar Indicator Description and Operation.

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

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