DDEC III/IV Single ECM Troubleshooting – Section 76.3 Troubleshooting Flash Code 76

Section 76.3
Troubleshooting Flash Code 76

Perform the following steps to troubleshoot Flash Code 76.‪

Section 76.3.1
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 all logged codes.
   1. If codes other than 121/0 are logged, service them first.
   2. If code 121/0 is logged, and no other codes are logged, there was an engine running condition at which the engine r/min exceeded a calibration limit during engine brake operation.

   Note: Determine the reason the engine r/min went too high.