Diesel Data: Automotive Repair

Audio Unit Power Will Not Turn OFF

Audio unit power will not turn OFF

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

1. Turn the ignition switch to ON (II).
2. 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.

NO - Go to step 3.

3. Turn the ignition switch to LOCK (0).
4. Remove the audio unit.
Disconnect the audio unit connector A (17P).

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

5. 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 YEL/RED wire.

NO - Replace the audio unit.