Audio Unit Power Switch Will Not Turn Off

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

Audio unit power switch will not turn off

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.
- Check for aftermarket accessories including cell phones and chargers plugged into the vehicle's accessory power sockets.
- Eject all the CDs before removing the audio unit and the audio disc changer to prevent damaging the CD player's load mechanism.

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

2. Push the PWR knob off or turn the ignition switch to LOCK (0), to see if the audio unit turns off.

Does the audio unit turn off?

YES -

Operation is normal.�

NO -

Go to step 3.

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

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





Is there battery voltage?

YES -

Check for a short to power on the YEL/RED wire.�

NO -

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