Audio-HVAC Subdisplay Does Not Work Properly

Audio-HVAC Subdisplay does not work properly

1. Check the connections at the audio-HVAC subdisplay 10P connector and the audio-HVAC display panel connector C (10P).

Are the connections and terminals connected properly?

YES - Go to step 2.

NO - Repair the connection and recheck.




2. Check for continuity between the audio-HVAC subdisplay 10P connector and the audio-HVAC display panel connector C (10P) terminals for each wire listed in the chart.

Is there continuity?

YES - Go to step 3.

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




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

Is there continuity?

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

NO - Go to step 4.

4. Substitute a known-good audio-HVAC subdisplay and recheck.

Does the subdisplay work properly?

YES - Replace the original audio-HVAC subdisplay.

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