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 (without navigation)

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

NOTE:

- Check the vehicle battery condition first Testing and Inspection.
- Check the connectors for poor connections or loose terminals.
- Check for aftermarket accessories plugged info the vehicle's accessory power sockets.

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

2. Push the PWR button off to see if the audio unit turns off.

Does the audio unit turn off?

YES -

Go to step 3.

NO -

Replace the audio unit Audio Unit Removal/Installation (Without Navigation).�

3. Push the PWR button on, then turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

Does the audio unit turn off?

YES -

Operation is normal.�

NO -

Go to step 4.

4. Remove the audio unit Audio Unit Removal/Installation (Without Navigation). Disconnect audio unit connector A (24P).

NOTE: Eject all the CDs before disconnecting the audio unit to prevent damaging the CD player's load mechanism.

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





Is there battery voltage?

YES -

Check for short to power on the PUR wire.�

NO -

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