ECD SYSTEM(for DPF) CHECK FOR INTERMITTENT PROBLEMS

Tech Tips

Intelligent tester only:

Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the intelligent tester when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.


  1. Clear DTCs Click here.

  2. Switch the ECM from normal mode to check mode using the intelligent tester Click here.

  3. Perform a simulation test.

  4. Check and wiggle the harness(es), connector(s) and terminal(s).