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Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 27 (Anti-Lock Brake System - Electrical Diagnostics) >> Abs Electrical Diagnostics >> DTC Troubleshooting >> U1503-Implausible Message Data Length Received From FCM >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. 1)  CHECK IF FCM CAN BUS DTCs ARE PRESENT 

    With the scan tool, read FCM DTCs.

    Are there any FCM CAN BUS DTCs present? 

    Yes 

    1. Refer to appropriate ELECTRICAL DIAGNOSTICS article and diagnose the appropriate symptom.
    2. Perform ABS VERIFICATION TEST - VER 1 .

    No 

    1. Replace the Anti-Lock Brakes Module in accordance with the Service Information.
    2. Perform ABS VERIFICATION TEST - VER 1 .