Honda HR-V: Audio Unit Button Illumination Does Not Work (Without Navigation, Display Audio Type (7-inch Screen) )
NOTE:
- Check the vehicle 12 volt battery condition first.
- Check for B-CAN DTCs and resolve them before troubleshooting.
- Check the connectors for poor connections or loose terminals.
1. Problem verification:
- Turn the vehicle to the ON mode
- Turn the combination lighting switch to the parking light position
- 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.
2. Determine possible failure area (interior lights circuit, others).
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.
3. Determine possible failure area (audio unit, others).
Go into the System Diagnostic Mode, and use the Vehicle Status to check the ILL (Illumination) - Refer to: Audio System Sound Quality Diagnosis, or Audio System Diagnostic Mode (Without Navigation, Display Audio Type (7-inch Screen) ), or Audio System Diagnostic Mode (Without Navigation, Color Audio Type (5-inch Screen) ).
Does the ILL signal change from [0] to [1] when the combination light switch is turned to the parking light position?
YES
Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
NO
Go to step 4.
4. Open wire check (B-CAN_H, B-CAN_L lines):
- Turn the combination lighting switch off.
- Turn the vehicle to the OFF (LOCK) mode.
- Disconnect the following connectors.
Gauge control module connector A (32P)
Audio unit connector B (20P)
- Check for continuity between test points 1 and 2.
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Is there continuity?
YES
Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
NO
Repair an open in the wire (s) between the audio unit and the gauge control module.
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