Audio Remote Switch Does Not Work Properly (With Premium Audio)

Audio System Symptom Troubleshooting - Audio remote switch does not work properly

Audio remote switch does not work properly (with premium audio)

NOTE:

- Check the vehicle battery condition first Battery Test.
- Check the connectors for poor connections or loose terminals.

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

2. Turn on the audio unit, and check the audio remote switch operation (volume up, volume down, CH (UP), CH (DOWN), MODE).

Is the audio unit operation OK?

YES -

Intermittent failure, the audio remote switch is OK at this time. Check for loose or poor connections at the audio remote switch.

NO -

Go to step 3.

3. Do the Audio Remote Switch Test Audio Remote Switch Test.

Is the audio remote switch OK?

YES -

Go to step 4.

NO -

Replace the audio remote switch Service and Repair.

4. Turn the ignition switch to LOCK (0).

5. Disconnect audio unit connector A (24P).

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

6. Reconnect the audio remote switch, and measure the resistance between audio unit connector A (24P) terminals No. 5 and No. 16 as specified in the table.






AUDIO REMOTE SWITCH TABLE





Is the resistance OK?

YES -

Go to step 7.

NO -

Repair a short or high resistance in the wires between the audio unit and the audio remote switch. If the wires are OK, replace the cable reel Service and Repair.

7. Disconnect the audio remote switch 12P connector.

8. Check for continuity between body ground and audio unit connector A (24P) terminals No. 5 and No. 16 individually.





Is there continuity?

YES -

Repair a short to body ground in the wire(s) between the audio unit and the audio remote switch. If the wires are OK, replace the cable reel Service and Repair.

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.