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Home >> Chrysler >> 2011 >> 300 C, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 406 ((Drivetrain Control Module (DTCM) - Electrical Diagnostics - 2500 Hd & 3500 Hd)) >> Diagnosis And Testing >> C1078-Tire Revolutions Range Performance >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. DTC CONDITION IS PRESENT 
    1. Turn the ignition on.
    2. Observe the ABS Warning Indicator.

      Is the ABS Warning Indicator Flashing?

      Yes 

      • Go To  2

      No 

      • Go To  3
  2. INCORRECT TIRES PROGRAMMED INTO BCM 
    1. Inspect all four tires on the vehicle and note the size of each tire.
      NOTE:

      A non-production size tire cannot be programmed into the BCM. The production Powertrain, with the production size tires, is the only emissions certified configuration that is available for reprogramming.

    2. Verify the correct Tire/wheel information is programmed in the BCM.

      Is the correct value programmed in the BCM?

      Yes 

      No 

      • Program the correct Tire/Wheel information in the BCM.
      • Perform the DTCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  3. WIRING HARNESS INSPECTION 
    1. Turn the ignition off.
    2. Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or partially broken wires.
    3. Visually inspect the related wire harness connectors. Look for broken, bent, pushed out, or corroded terminals.
    4. Perform any Hotline letters or Technical Service Bulletins that may apply.

      Were any problems found?

      Yes 

      No 

      • Test complete, the condition or conditions that originally set this DTC are not present at this time.