Diesel Data: Automotive Repair

Symptom Troubleshooting




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.

- Check the connectors for poor connections or loose terminals.

- Check for aftermarket accessories plugged into the vehicle's accessory power sockets.

1. With the ignition switch to ON (II), push the power switch off 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 (Without Navigation) Disconnect audio unit connector A (24P).
NOTE: Eject all the audio disc before removing the audio unit and audio disc changer to prevent damaging the audio disc player's loading mechanism.

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 (Without Navigation)