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Home >> Jeep >> 2015 >> Compass Limited, FWD, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 ((All Wheel Drive (AWD) Module - Electrical Diagnostics)) >> DTC Troubleshooting >> DTC U0100: -Lost Communication With The ECM/Pcm >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different variant/trim than selected.

ACTIVE DTC 

  1. Ignition on, engine not running.
  2. With the scan tool, select view DTCs.

    Is the DTC Active at this time?

    Yes 

    • Perform the U0100-Lost Communication with ECM/PCM diagnostic procedure.

    No