A/C Control A/C Switch Failure (MTC)

Test 1 - 3:

Test 4 - 8:

SYMPTOM
A/C CONTROL A/C SWITCH FAILURE (MANUAL A/C)

WHEN MONITORED
With the ignition on.

SET CONDITION
The BCM detects the A/C switch stuck in the depressed position for atleast 30 seconds.

POSSIBLE CAUSES
- Control head - shorted to ground
- Mode switch MUX circuit shorted to ground
- Mode switch MUX circuit shorted to sensor ground
- Body control module - mode switch MUX shorted to ground
- Control head - button sticks
- Control head mode MUX incorrect
- Control head - open switch
- Control head switches okay