Radio Dimming Shorted High

Test 1 - 2:

SYMPTOM
RADIO DIMMING SHORTED HIGH

WHEN MONITORED
Ignition in RUN and IOD fuse installed.

SET CONDITION
The BCM is trying to activate the radio dimming output (park lamps on and parade mode requested). The code will set if the BCM pulls this input low and excessive current is sinked into the BCM.

POSSIBLE CAUSES
- Dimmer section of radio
- Panel lamps driver circuit shorted to voltage
- Body control module