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Home >> Jeep >> 2014 >> Wrangler Sahara, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 57 ((Tire Pressure Module (TPM) - Electrical Diagnostics)) >> DTC Troubleshooting >> U0100-00-Lost Communication With ECM/Pcm >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2014 Dodge Journey. However, it is still accessible from the selected car via links, so may be relevant.

VERIFY THE DTC IS ACTIVE 

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

    Is the DTC active at this time?

    Yes 

    • Refer to  DIAGNOSIS AND TESTING  and perform the U0100-00-Lost Communication with ECM/PCM diagnostic procedure.

    No 

    • Refer to  DIAGNOSIS AND TESTING  and perform the Stored Lost Communication DTCs diagnostic procedure.
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