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.

VERIFY DTC IS ACTIVE
NOTE: Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
1. Turn the ignition on.
2. With the scan tool, select View DTCs.
  Is this DTC Active?
  
  Yes
  - Go to step 2
  No
  - Perform the INTERMITTENT CONDITION diagnostic procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
1. With the scan tool, read all active DTCs from all CAN C Bus modules.
  NOTE: Check for CAN C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.
  
  Does the scan tool display any active DTCs to the conditions listed above?
  
  Yes
  - Perform the appropriate diagnostic procedure.
  No
  - Go to step 3
VERIFY THAT THE ABS IS ACTIVE ON THE BUS
1. With the scan tool, select ECU View.
2. Verify that the ABS is active on the bus.
  Is the ABS active on the bus?
  
  Yes
  - Go to step 4
  No
  - Refer to DTC-Based Diagnostics/MODULE, Engine Control (ECM) - Standard Procedure for diagnostic procedures and other possible causes.
CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
1. With the scan tool, select Network View and select Advanced.
  Is there more than one module with active DTCs "Logged Against" the ABS?
  
  Yes
  - Replace/update the ABS in accordance with the service information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .
  No
  - Replace the PCM in accordance with the service information.
  - Perform the BODY VERIFICATION TEST. Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Standard Procedure .