Check for continuity between body ground and audio HVAC subdisplay unit connector E (5P) terminals No. 4 and No. 5 individually (with audio system) or between body ground and the HVAC subdisplay unit 10P connector terminals No. 4 and No. 5 individually (without audio system).
Is there continuity?
YES
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Repair short to body ground in the wire(s) between the climate control unit and the audio HVAC subdisplay unit (with audio system) or the HVAC subdisplay unit (without audio system).■