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Home >> Jeep >> 2015 >> Compass Limited, AWD, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 342 ((Steering Control Module (SCM) - Electrical Diagnostics)) >> DTC Troubleshooting >> U0121-Lost Communication With Abs >> Diagnostic Test

Diagnostic Test

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

ACTIVE DTC 

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

    Is the DTC Active at this time?

    Yes 

    • Refer to DIAGNOSIS AND TESTING and perform the U0121-Lost Communication with Anti-Lock Brake Module diagnostic procedure.

    No 

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