check and suspect relay
RETRIEVING DIAGNOSTIC TROUBLE CODES
Diagnostic Trouble Codes (DTCs) related to the ATC system are stored in the Body Control Module (BCM).
Any BCM DTC present, will be displayed on ATC control head display when in-vehicle calibration and DTC check is completed.
ATC control head will display a two-digit DTC.
If system is okay and there are no system DTCs present, system will return to normal operation.
There are certain conditions in which more than one ATC system DTC can be stored in BCM. ATC control head display can show only one DTC at a time. Press panel mode button to scroll through any additional DTCs. If any other button or selector is moved or pushed, additional DTCs will not be displayed. To exit in-vehicle calibration DTC check, turn ignition off.
NOTE:If in-vehicle temperature sensor is disconnected while Body Control Module (BCM) is operating, DTC 26 will set. This can occur when BCM or ATC control head connectors are disconnected when battery is connected (even with ignition off). To correct condition, clear DTC 26 from BCM
Oct 11, 2009 at 7:47 AM
