Important: Review the Scan Tool operation in order to familiarize yourself with the system functions. Refer to the scan tool user manual.

Inspect the DLC connector for obvious damage or conditions which could cause the symptom.

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

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