Audio-HVAC Subdisplay Unit Does Not Display (With Navigation)

Audio-HVAC subdisplay unit does not display (with navigation)

1. Remove the audio-HVAC subdisplay unit.
2. Check the connections at the audio-HVAC subdisplay unit 10P connector and the audio unit connector D (10P).

Are the connectors and terminals connected properly?

YES - Go to step 3.

NO - Repair the connection and recheck.




3. Check for continuity between the audio-HVAC subdisplay unit 10P connector and the audio unit connector D (10P) terminals for each wire listed in the chart.

Is there continuity?

YES - Go to step 4.

NO - Repair the open in the wire between the audio unit and the audio-HVAC subdisplay unit.




4. Check for continuity between each audio-HVAC subdisplay unit 10P connector terminal and body ground.

Is there continuity?

YES - Repair the short to ground in the wire between the audio unit and the audio-HVAC subdisplay unit.

NO - Go to step 5.

5. Substitute a known-good audio-HVAC subdisplay unit and recheck.

Does the subdisplay work properly?

YES - Replace the original audio-HVAC subdisplay unit.

NO - Substitute a known-good audio-HVAC display panel and retest. If the problem is gone, replace the original audio unit.