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Home >> Chrysler >> 2007 >> 300 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> DTCS P3441 To U1418, Pre-Diagnostic Troubleshooting Procedure >> U0168 - Lost Communication With Vehicle Security Control Module (SKREEM/WCW) >> Diagnostic Test

Diagnostic Test

  1. 1) 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.
    NOTE: Check the IOD fuse before continuing. If the fuse is open, check the circuit for a short to ground.

    Turn the ignition on.

    With a scan tool, select View DTCs.

    Is the status Active for this DTC? 

    Yes 

    1. Refer to DIAGNOSIS AND TESTING for diagnostic procedures and for further possible causes.

    No 

    1. Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. See *CHECKING FOR AN INTERMITTENT DTC .
    2. Perform *PCM VERIFICATION TEST .
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