Diesel Data: Automotive Repair

Audio Unit Power Switch Will Not Turn Off (Without Navigation)




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

Audio unit power switch will not turn off (without navigation)

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.
- Check for aftermarket accessories plugged into the vehicle's accessory power sockets.
- Eject any audio discs before removing the audio unit to prevent damaging the audio disc player's loading mechanism.

1. With the ignition switch in ON (II), press the power switch or turn the ignition switch to LOCK (0) to see if the audio unit turns off.

Is the audio unit OFF?

YES -

Operation is normal at this time.

NO -

Go to step 2.

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

3. Remove the audio unit Audio Unit Removal/Installation.

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





Is there voltage?

YES -

Check for short to power on ORN wire.

NO -

Replace the audio unit Audio Unit Removal/Installation.