Symptom Troubleshooting

Symptom Troubleshooting: Navigation display stays on with ignition switch in LOCK (0)

Navigation display stays on with ignition switch in LOCK (0)

NOTE:

- Check the connectors for poor connections or loose terminals.

- Before troubleshooting, get the navigation system anti-theft code, then write down the audio presets.

- After troubleshooting, re-enter the anti-theft code, and re-initialize the navigation system, then enter the audio presets.

- Check for aftermarket accessories that use the same power circuit. A feedback can cause this problem.

1. Remove the key from the ignition.

Does the navigation screen stay on?
YES - Go to step 2.

NO - The system is OK at this time.


2. The vehicle may have been used as a demonstration vehicle at an event like an auto show. In these events, power is often jumpered to the navigation system so that the ignition key is not needed in the vehicle. At the end of the show, the jumper wire may not have been removed. Check the navigation unit connector A (24P) for a non-factory jumper wire in series with the factory cable.

Is there a jumper wire?
YES - Remove the jumper wire, and re-test. Return the jumper wire to Tech Line.

NO - Go to step 3.


3. Check if the audio unit works.

Does the audio unit work with the ignition switch off?
YES - Troubleshoot the ACC circuit for a short to power with another circuit.

NO - Replace the navigation unit. Service and Repair