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 Battery Test.
- Check the connectors for poor connections or loose terminals.

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

2. Turn on the audio system and check the audio-navigation unit operation [volume up, volume down, CH (UP), CH (DOWN), MODE].

Is the audio-navigation unit operation OK?

YES -

Operation is normal.

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.

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

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

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

6. 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 7.

NO -

Repair a short or high resistance in the circuit between the audio-navigation 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-navigation unit connector A (24P) terminals No. 5 and No. 16 individually.





Is there continuity?

YES -

Repair a short to body ground in the circuit between the audio-navigation unit and the audio remote switch. If the wires are OK, replace the cable reel Service and Repair.

NO -

Substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.