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.
- Before troubleshooting, make sure you have anti-theft codes for the audio-navigation unit.
- After troubleshooting, enter the anti-theft codes for the audio-navigation unit.
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 (UP), CH (DOWN), MODE).
Is the audio-navigation unit operation OK?
YES -
Operation is normal.�
NO -
Go to step 3.
3. Test the audio remote switch 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. Remove the audio-navigation unit Audio-Navigation Unit Removal/Installation, and disconnect audio-navigation unit connector A (24P).
NOTE: Eject all the discs before removing 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 -
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.�
NO -
Go to step 7.
7. Disconnect the cable reel subharness 20P connector from the cable reel.
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 -
Go to step 9.
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.�
9. Disconnect the dashboard wire harness 20P connector from the cable reel.
10. 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 cable reel.�
NO -
Replace the cable reel Service and Repair.�