Audio-HVAC Subdisplay Unit Does Not Work Properly

Audio-HVAC subdisplay does not work properly

NOTE:
- Make sure the navigation unit has a white DVD installed.
- Check and repair all CAN DTCs before doing this troubleshooting.
- Check for loose or poor terminals.

1. Check the clock in the setup menu. Reset if necessary and recheck.

Does the clock reset?

YES - The system is OK at this time.

NO - Go to step 2.

2. Disconnect the display unit connector A (10P) and audio-HVAC subdisplay unit 10P connector.
3. Check for an open or short to body ground between audio-HVAC subdisplay unit 10P connector terminal No. 4, No. 5, No. 6, No. 7 and display unit connector A (10P) terminal No. 4, No. 5, No. 6, No. 7.

Are the circuits OK?

YES - Substitute a known-good audio-HVAC subdisplay unit and recheck. If the symptom/indication goes away, replace the original audio-HVAC subdisplay unit. If symptom/indication is still present, replace the display unit.

NO - Replace the attached shielded harness.