Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read DTCs and record on the repair order.
  Is the DTC active or pending?
  
  Yes
  - Go To 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to TESTING FOR AN INTERMITTENT CONDITION .
VERIFY THAT THE BODY CONTROL MODULE IS CAPABLE OF SETTING AMBIENT AIR TEMPERATURE SENSOR FAULTS
1. Check the BCM fault code list to verify that the BCM has the capability to set DTCs against the AAT Sensor. Refer to Refer to DIAGNOSTIC CODE INDEX
  Are there any AAT Sensor faults listed in the DTC list for the BCM?
  
  Yes
  - Go To 3
  No
  - Go To 4
CHECK THE BODY CONTROL MODULE FOR AAT SENSOR FAULTS
1. With the scan tool, read DTCs in the BCM.
  Is the BCM setting any DTCs against the AAT Sensor?
  
  Yes
  - Perform the diagnostic procedure in the BCM. Refer to DIAGNOSTIC CODE INDEX
  No
  - Replace and program the Body Control Module (BCM) in accordance with the Service Information.
    Refer to MODULE, BODY CONTROL (BCM), REMOVAL .
CHECK THE AAT SENSOR WIRING
1. Turn the ignition off.
2. Disconnect the AAT Sensor harness connector.
3. Disconnect the appropriate BCM harness connector.
4. Check the AAT Sensor circuits:
  - for an open condition.
  - for a short to voltage.
  - for a short to ground.
  - for a short to each other.
  Were any problems found with the wiring?
  
  Yes
  - Perform the appropriate repair of the wiring.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Go To 5
REPLACE THE AAT SENSOR AND RETEST FOR DTC
1. Replace the AAT Sensor in accordance with the Service Information.
2. Reconnect all harness connectors.
3. Turn the ignition on.
4. With the scan tool, read DTCs.
  Did the DTC return?
  
  Yes
  - Replace and program the Body Control Module (BCM) in accordance with the Service Information.
    Refer to MODULE, BODY CONTROL (BCM), REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  No
  - Replacing the AAT Sensor repaired the fault.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .