Audio System - Audio switch panel button illumination does not work(Without Navigation)
Audio switch panel button illumination does not work
NOTE:
- Check the vehicle battery condition first .
- Check for B-CAN DTCs and resolve them before troubleshooting.
- Check the connectors for poor connections or loose terminals.
- Problem verification
-1. Press the engine start/stop button to select the ON mode.
-2. Turn the combination light switch to the parking light position.
-3. Check if the audio unit buttons are illuminated.
Are the buttons illuminated?
YES
Intermittent failure, the audio unit is OK at this time.
NO
The failure is duplicated, go to step 2.
- Determine possible failure area (interior lights circuit, others)
-1. Check if several other buttons that are not related to the audio system are illuminated.
Are the buttons illuminated?
YES
Go to step 3.
NO
Troubleshoot the interior lights.
- Open wire check (B CAN-H line, B CAN-L line)
-1. Turn the combination light switch off.
-2. Press the engine start/stop button to select the OFF mode.
-3. Disconnect the following connectors.
Audio unit connector B (20P) Gauge control module 32P connector -4. Check for continuity between test points 1 and 2.
Test condition OFF mode Audio unit connector B (20P): disconnected Gauge control module 32P connector: disconnected Test circuit B CAN-H Test point 1 Audio unit connector B (20P) No. 13 (PNK) Test point 2 Gauge control module 32P connector No. 7 (PNK) Test circuit B CAN-L Test point 1 Audio unit connector B (20P) No. 3 (BLU) Test point 2 Gauge control module 32P connector No. 8 (BLU) Is there continuity?
YES
The B CAN-H and the B CAN-L wires are OK. Go to step 4.
NO
Repair an open in the wire(s) between the audio unit and the gauge control module.
- Audio unit check
-1. Substitute a known-good audio switch panel .
-2. Reconnect all the connectors, and recheck.
Does the symptom go away?
YES
Replace the original audio switch panel.
NO