Diagnostic Mode 04 - Erase DTC Memory

Diagnostic Mode 04 - Erase DTC Memory

Diagnostic Mode 04 makes it possible to erase the DTC memory and to reset all emissions-related diagnostic data. In that way, all faults in the DTC memory in the ECM and TCM are erased. The adaptation values may also be reset.

Emissions-related diagnostic data includes (as applicable):
- MIL Status
- Number of DTCs
- Readiness Bits
- Confirmed DTCs
- Pending DTCs
- DTC that belongs to freeze frame
- Freeze frame data
- Test results of specific diagnostic functions
- Distance driven with MIL ON
- Number of Warm-Up Cycles after erasing the DTC memory
- Distance driven after erasing the DTC memory
- Misfire counter

Conditions
- DTC memory is checked, Diagnostic Mode 03 - Read DTC Memory Diagnostic mode 3: Check DTC memory.

Work Procedure
- Connect diagnostic tester. Diagnostic Tester, Connecting
- Start engine and let run at idle.
- Under address word 33, select Diagnostic mode 4: Reset/erase diagnostic data.

Erased or reset:
- Number and content of the DTC memories,
- Operating conditions,
- Adaptation values,
- Test results.

- End diagnosis and switch ignition off.
- Generate readiness code. Readiness Code, Generating