Diagnostic Test

ANTI-LOCK BRAKE SYSTEM (ABS) MODULE DTCS PRESENT
NOTE: Verify the fluid level is correct and not contaminated before continuing with this test.
1. Ignition on, engine off.
2. With the scan tool, select View DTCs in the ABS Module.
  Are there any ABS DTCs present?
  
  Yes
  - Perform the appropriate ABS diagnostic procedure before continuing with this test. Refer to DTC-Based Diagnostics/MODULE, Antilock Brake (ABS) - Diagnosis and Testing .
  No
  - Go to 2
DTC IS ACTIVE
NOTE: Check with customer on driving terrain (e.g. mud, sand, snow) for set condition.
1. Ignition on, engine not running.
2. With the scan tool, record and erase DTCs.
3. Test drive vehicle on dry paved road.
4. With the scan tool, read DTCs.
  Is the status Active for this DTC?
  
  Yes
  - Go to 3
  No
  - Go to 4
AMBIENT TEMPERATURE SENSOR
1. With the scan tool, monitor the ambient temperature in the Front Control Module (FCM).
  Is the ambient temperature at room temperature?
  
  Yes
  - Replace the Transfer Case Clutch Pack in accordance with the Service Information.
  - Perform the TRANSFER CASE VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Final Drive Control (FDCM) - Standard Procedure .
  No
  - Perform the appropriate diagnostic procedure. Refer to DTC-Based Diagnostics/MODULE, Front Control (FCM) - Diagnosis and Testing .
INTERMITTENT WIRING HARNESS AND CONNECTORS
1. The conditions necessary to set this DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
3. Wiggle test the wiring harness and connectors while monitoring the scan tool data relative to this circuit.
4. Using the scan tool, monitor the data related to this circuit while performing the wiggle test. Look for the data to change or for the DTC to reset.
  Were there 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.