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Home >> Jeep >> 2005 >> Grand Cherokee Laredo, 3.7 K, AWD >> Repair and Diagnosis >> Engine Performance >> System >> DTCS P2503 To U1411 >> Diagnosis And Testing >> U0141-Lost Communication With Front Control Module >> Diagnostic Test

Diagnostic Test

  1. 1)  ACTIVE DTC 

    Ignition on, engine not running.

    With a scan tool, read PCM 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 INTERMITTENT CONDITION .
    2. Perform POWERTRAIN VERIFICATION TEST .
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