Important: Review the system operation in order to familiarize yourself with the system functions. Refer to Automatic Transmission Shift Lock Control Description and Operation .
• | Inspect for aftermarket devices which could effect the operation of the automatic transmission shift lock control system, Refer to Checking Aftermarket Accessories in Wiring Systems. |
• | Inspect the easily accessible to visible system components 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 diagnostic procedure from the following list in order to diagnose the symptom: