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 Battery Test.
- Check the connectors for poor connections or loose terminals.
- Check for aftermarket accessories plugged into the vehicle's accessory power sockets.
- Eject all CDs before disconnecting the audio unit and CD 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 system turns off.

Does the audio system 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 (17P) terminal No. 14 and body ground.





Is there battery voltage?

YES -

Check for short to power on the PUR wire.

NO -

- With ELS audio: Substitute a known-good audio unit Audio Unit Removal/Installation (With Navigation System), and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation (With Navigation System).
- With premium audio: Substitute a known-good audio unit Audio Unit Removal/Installation (Without Navigation System), and recheck. If the symptom/indication goes away, replace the original audio unit Audio Unit Removal/Installation (Without Navigation System).