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

• Depending on scan tool and protocol used, diagnostic mode 04 and the information provided may be referred to by a different name.

Procedure

- Connect the scan tool.

- Switch the ignition on.

- Select Diagnostic Mode 03: Interrogating fault memory.

- Then select Mode 4: Reset/delete diagnostic data.

The scan tool will display: Diagnostic data are being erased.

- Switch the ignition OFF.