ATC Auto Switch Failure

Test 1:

SYMPTOM
ATC AUTO SWITCH FAILURE

WHEN MONITORED
With the ignition on.

SET CONDITION
The BCM interfaces with the ATC head over the PCI Bus. If an ATC switch is held in the closed position for longer than 5 to 10 minutes, a switch failed code will be set.

POSSIBLE CAUSES
- ATC head switch stuck
- ATC head - erase DTC- reset