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Home >> Jeep >> 2010 >> Commander Limited, 4WD >> Repair and Diagnosis >> Brakes >> Traction Control >> Anti-Lock Brake System - Electrical Diagnostics >> DTC Troubleshooting >> U1503-Implausible Message Data Length Received From FCM >> Diagnostic Test

Diagnostic Test

  1. CHECK IF FCM CAN BUS DTCs ARE PRESENT 
    1. With the scan tool, read FCM DTCs.

      Are there any FCM CAN BUS DTCs present?

      Yes 

      No