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.

CHECK FOR ACTIVE DTC
1. With the scan tool, record and erase DTCs.
2. Cycle the ignition switch from off to on, leaving the ignition off for a minimum of 30 seconds.
3. With the scan tool, read the active DTCs.
  Does the scan tool display this DTC as active?
  
  Yes
  - Go to step 2
  No
  - If the DTC is stored, check for an intermittent condition. Using the wiring diagram/schematic as a guide, visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.
INSPECT THE TIPM, PCM, AND SHIFT LEVER ASSEMBLY (NAG1) TERMINALS AND WIRE HARNESS FOR A CONDITION CAUSING HIGH CIRCUIT RESISTANCE
1. Turn the ignition off.
2. Disconnect the TIPM C1 harness connector.
3. Disconnect the PCM C1 harness connector.
4. Disconnect the Shift Lever Assembly (NAG1) harness connector
5. Inspect the connector terminals for signs of corrosion build up and damage.
6. Visually inspect the wiring harness for any chafed, pierced, pinched or partially broken wires hidden in the wire insulation.
  Were any of the above conditions found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the TIPM in accordance with the service information
  - Perform the BODY VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .