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Home >> Jeep >> 2012 >> Grand Cherokee SRT-8 >> Repair and Diagnosis >> Engine Performance >> System >> 6.4L - DTCS P2273 To U1431 >> Diagnosis And Testing >> U0168-Lost Communication With Vehicle Security Control Module (Win) >> Diagnostic Test

Diagnostic Test

  1. VERIFY DTC IS ACTIVE 
    NOTE:

    Make sure the IOD fuse is installed and the battery is fully charged before proceeding.

    1. Turn the ignition on.
    2. With the scan tool, read active DTCs.

      Is this DTC active?

      Yes 

      No