Scan Tool Testing and Procedures

Engine Control Module DTC Memory, Checking and Erasing

Special tools, testers and auxiliary items required

• Diagnostic Cable

• Vehicle Diagnostic, Testing and Information System (VAS 5051 A)

Procedure:

Connect the vehicle diagnosis, testing and information system (VAS 5051 A) as follows:

- Open the cover - 1 - (if equipped) and connect the diagnostic cable to the data link connector.






- Start the engine and run at idle speed.

Only when the engine does not start:

- Turn on the ignition.

Selecting operating mode:

- Press button on display for "Vehicle On Board Diagnostic (OBD)".

Selecting vehicle system:

- Press "01 - Engine electronics" on display to check engine control module (J623) for cylinder bank 1, or "11 - Engine electronics 2" on display to check engine control module 2 (J624) for cylinder bank 2.

The control module identification with code - 2 - of Engine Control Module (ECM), as well as the chassis number and immobilizer identification number will be indicated on the display.






• A printout is available. Press the print button if required.

Selecting diagnosis function:

- Press button "02 - Check DTC memory" on display.

- If no fault is stored in ECM "0 fault(s) detected" is displayed.

- If faults are stored in the ECM, these are shown one below the other on the display.

- Press the � button.

- Press button "05 - Erase DTC memory" on display.

- Press function "06 - End output".