Symptom Troubleshooting

Audio System Symptom Troubleshooting - Audio-Navigation unit power switch will not turn off

Audio-Navigation unit power switch will not turn off (with navigation)

NOTE:

- Check the vehicle battery condition first 12 Volt Battery Test.
- Check for aftermarket accessories plugged into the vehicle's accessory power sockets.
- Check the connectors for poor connections or loose terminals.

1. Turn the ignition switch to ON (II).

2. Press the power button off or turn the ignition switch to LOCK (0) to see if the audio-navigation unit turns off.

Does the audio-navigation unit turn off?

YES -

Operation is normal.

NO -

Go to step 3.

3. Turn the ignition switch to LOCK (0).

4. Measure the voltage between audio-navigation unit connector A (24P) terminal No. 14 and body ground.





Is there battery voltage?

YES -

Check for short to power on the PUR wire.

NO -

Substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.