DDEC III/IV Single ECM Troubleshooting

Section 52.3 Troubleshooting Flash Code 52

Section 52.3
Troubleshooting Flash Code 52

The following procedure will troubleshoot Flash Code 52. ‪

Section 52.3.1
Multiple Code Check

Perform the following steps to check for multiple codes.‪

  1. Turn vehicle ignition switch ON.
  2. Plug in the diagnostic data reader (DDR).
  3. Read active codes.
    1. If active codes other than 254/12 are logged, service them first.
    2. If active code 254/12 is logged, and no other codes are logged, hook up test ECM. If code clears, replace the ECM. If code is not cleared, contact Detroit Diesel Technical Service.
    3. Note: For information concerning ECM replacement, refer to section 2.9 in the service manual.


DDEC III/IV Single ECM Troubleshooting Guide - 6SE497
Generated on 10-13-2008

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