Audio Remote Switch Does Not Work Properly (With Navigation)

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

Audio remote switch does not work properly (with navigation)

NOTE:

- Check the vehicle battery condition first 12 Volt Battery Test.
- Check the connectors for poor connections or loose terminals.

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

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

Is the audio-navigation unit operation OK?

YES -

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

NO -

Go to step 3.

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

4. Do the audio remote switch test Audio Remote Switch Test.

Is the audio remote switch OK?

YES -

Go to step 5.

NO -

Replace the audio remote switch, and recheck.

5. Remove the audio-navigation unit Audio-Navigation Unit Removal/Installation.

6. Disconnect audio-navigation unit connector A (24P).

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

7. Reconnect the audio remote switch, and measure the resistance between audio-navigation 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 8.

NO -

Repair a short or open or high resistance in the circuit between the audio-navigation unit and the cable reel. If the wires are OK, replace the cable reel Service and Repair.

8. Check for continuity between body ground and audio-navigation 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-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel Service and Repair.

NO -

Replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.