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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.
  1. CHECK FOR AN ACTIVE DTC 
    NOTE:

    For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

    1. Turn the ignition on.
    2. With a scan tool, select View PCM DTCs.

      Is the DTC active?

      Yes 

      • Go To  2

      No 

      • Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to .
  2. U0141-LOST COMMUNICATION WITH IPM (FCM/TIPM) ALSO ACTIVE 
    1. With the scan tool, read DTCs and record on the repair order.

      Is the U0141-LOST COMMUNICATION WITH IPM (FCM/TIPM) also set?

      Yes 

      • Perform the U0141-Lost Communication with IPM (FCM/TIPM) diagnostic procedure. Refer to DIAGNOSIS AND TESTING .

      No 

      • Refer to  DIAGNOSIS AND TESTING  and perform the Stored Lost Communication DTCs diagnostic procedure.
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