Audio Remote Switch Does Not Work Properly (Without Navigation)
Audio System Symptom Troubleshooting - Audio remote switch does not work properly
Audio remote switch does not work properly (without 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 unit, and check the audio remote switch operation (volume up, volume down, CH +, CH -, MODE).
Is the audio 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 audio system Self-Diagnostic Function.
Are the audio remote switch functions detected and functioning properly?
YES -
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.
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 unit Audio Unit Removal / Installation.
NOTE: Eject all the discs before removing the audio unit to prevent damaging the CD player's load mechanism.
7. Disconnect audio unit connector A (24P).
8. Reconnect the audio remote switch, and measure the resistance between audio 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 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 unit connector A (24P) terminals No. 11 and No. 22 individually.
Is there continuity?
YES -
Repair a short to body ground in the circuit 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.