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. Go to the audio button, knob, and audio remote switch detection mode in the Self-Diagnostic Function.
Are the audio remote switch functions detected and functioning properly?
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 4.
4. Turn the ignition switch to LOCK (0).
5. Do the Audio Remote Switch Test Audio Remote Switch Test.
Is the audio remote switch OK?
YES -
Go to step 6.
NO -
Replace the audio remote switch, and recheck.
6. Remove the audio-navigation unit Audio-Navigation Unit Removal/Installation.
NOTE:
- Eject all the discs before removing the audio-navigation unit to prevent damaging the CD player's load mechanism.
- Remove the PC card before removing the audio-navigation unit.
7. Disconnect audio-navigation unit connector A (24P).
8. Reconnect the audio remote switch, and measure the resistance between audio-navigation unit connector A (24P) terminals No. 11 and No. 22 as specified in the table.
AUDIO REMOTE SWITCH TABLE
Is the resistance OK?
YES -
Go to step 9.
NO -
Repair a short or open 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.
9. Check for continuity between body ground and audio-navigation unit connector A (24P) terminals No. 11 and No. 12 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.