Diagnostic Test

WARNING: This page is about a different car, the 2009 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.

DTC IS ACTIVE
NOTE: Diagnose and repair any system voltage or Transfer Case related DTCs in the Final Drive Control Module before continuing with this test.
1. Ignition on, engine not running.
2. With the scan tool, clear Stored DTCs in the FDCM and the CCN.
3. Test drive the vehicle.
4. During the test drive, move the Transfer Case Selector Switch to each position several times in accordance with the Service Information.
5. With the scan tool, read DTCs in the FDCM and the CCN.
  Does this DTC reset?
  
  Yes
  - Go to step 2
  No
  - Go to step 5
AMBIENT TEMPERATURE SENSOR
1. With the scan tool, monitor the ambient temperature in the Totally Integrated Power Module (TIPM).
  Is the ambient temperature at room temperature?
  
  Yes
  - Go to step 3
  No
  - Replace the Ambient Temperature Sensor in accordance with the Service Information.
  - Perform the TRANSFER CASE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .
TRANSFER CASE SELECTOR SWITCH
1. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors relative to this circuit.
2. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TRANSFER CASE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .
  No
  - Go to step 4
CLUSTER CONTROL NODE
1. Turn the ignition off to the lock position
2. Replace the Transfer Case Selector Switch in accordance with the Service Information.
3. Ignition on, engine not running.
4. With the scan tool, clear Stored DTCs in the CCN and the FDCM.
5. Test drive the vehicle.
6. During the test drive, move the Transfer Case Selector Switch to each position several times in accordance with the Service Information.
7. With the scan tool, read DTCs in the CCN and the FDCM.
  Does this DTC reset?
  
  Yes
  - Replace the Final Drive Control Module (FDCM) in accordance with the Service Information.
  - Perform the TRANSFER CASE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .
  No
  - Test complete.
INTERMITTENT WIRING AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
3. While monitoring the scan tool data relative to this circuit, wiggle test the wiring and connectors.
4. Look for the data to change or for the DTC to reset during the wiggle test.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the TRANSFER CASE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .
  No
  - Test complete.