Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Audio-HVAC Subdisplay Unit Does Not Work Properly

Audio-HVAC subdisplay unit does not work proper

NOTE: Always check for and resolve all CAN DTCs before troubleshooting the navigation system.

1. Check the clock in the set up. Reset if necessary and recheck.

Does the clock reset?

YES - The system is OK at this time.

NO - Go to step 2.

2. 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 audio-HVAC display panel connector C (10P) terminal No. 4, No. 5, No. 6, No. 7.

Are the circuits OK?

YES - Replace the display unit.

NO - Replace the affected shielded harness.