Diagnostic Test

WARNING: This page is about a different car, the 2016 Jeep Wrangler and 2015 Jeep Wrangler. However, it is still accessible from the selected car via links, so may be relevant.

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 .
VERIFY THAT THE BODY CONTROL MODULE IS CAPABLE OF SETTING AMBIENT AIR TEMPERATURE SENSOR FAULTS
1. Check the TIPM fault code list to verify that the TIPM has the capability to set DTCs against the AAT Sensor. Refer to DIAGNOSIS AND TESTING .
  Are there any AAT Sensor faults listed in the DTC list for the TIPM?
  
  Yes
  - Go To 3
  No
  - Go To 4
CHECK THE TOTALLY INTEGRATED POWER MODULE FOR AAT SENSOR FAULTS
1. With the scan tool, read DTCs in the TIPM.
  Is the TIPM setting any DTCs against the AAT Sensor?
  
  Yes
  - Perform the diagnostic procedure in the TIPM. Refer to DIAGNOSIS AND TESTING .
  No
  - Replace and program the Totally Integrated Power Module in accordance with the Service Information. Refer to MODULE, TOTALLY INTEGRATED POWER (TIPM) , REMOVAL .
CHECK THE AAT SENSOR WIRING
1. Turn the ignition off.
2. Disconnect the AAT Sensor harness connector.
3. Disconnect the appropriate TIPM harness connector.
4. Check the AAT Sensor wires:
  - 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 .
  No
  - Go To 5
AAT SENSOR
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 and record on the repair order.
  Is the DTC still active?
  
  Yes
  - Replace and program the Totally Integrated Power Module in accordance with the Service Information. Refer to MODULE, TOTALLY INTEGRATED POWER (TIPM) , REMOVAL .
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to .
  No
  - Repair is complete.
  - Perform the POWERTRAIN VERIFICATION TEST. Refer to .