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Home >> Jeep >> 2008 >> Commander Overland, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> DTCS U0001 To U1418, System Checks, Checking Pcm Power And Ground Circuits, Engine Cranks But No Start >> U0168-Lost Communication With Vehicle Security Control Module (SKREEM-WCM) >> Diagnostic Test
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Diagnostic Test

  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 DTC Active at this time? 

    Yes 

    1. Refer to ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS for diagnostic procedures and for further possible causes.

    No 

    1. Refer to the INTERMITTENT CONDITION Diagnostic Procedure.
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