Engine control module DTC memory, checking and erasing

Special tools, testers and auxiliary items required 

• Vehicle diagnostic, testing, and information system VAS 5051
• Diagnosis cable VAS 5051/5A or VAS 5051/6A
• Diagnostic cable VAS 5051/1 or VAS 5051/3 can also be used.

Work procedure

• Connect Vehicle Diagnosis, Testing and Information System VAS 5051 as follows:

Vehicles up to 09.00:

• Pull off cover in direction of - arrow  -.
• Connect diagnostic cable VAS 5051/5A connector or VAS 5051/6A to Data Link Connector (DLC).

Vehicles as of 10.00

• Connect diagnostic cable VAS 5051/5A connector or VAS 5051/6A to Data Link Connector (DLC).

Continuation for all vehicles

• Start engine and run at idle speed.

Only if engine does not start:

• Switch ignition on.

Select operating mode

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

Select vehicle system

• Press button "01 - Engine electronics" on display.

Display will indicate control module identification and engine control module coding.

Select diagnostic function

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

If no malfunction is stored in engine control module, "0 DTC(s) detected" is displayed.

If DTCs are stored in Engine Control Module (ECM), they are listed in sequence on display.

• Press ← key.
• Press button "05 - Erase DTC memory" on display.
• Press function "06 - End output".

Vehicles with engine codes AUG, AWM

• If DTC memory was erased, readiness code must be re-generated → Adapting functions and components