Engine Control Module, Replacing

Engine Control Module, Replacing

• To achieve optimal anti-theft protection for the vehicle, an anti-theft immobilizer was installed. The anti-theft immobilizer is a system for enabling/locking the Engine Control Module (ECM).

• So that this system cannot be circumvented, it is necessary to perform adaptation of the anti-theft immobilizer using the Vehicle Diagnosis & Service Syst. (VAS5052) in the On Board Diagnostic (OBD) function.

• The great availability of equipment options makes adaptation of the Engine Control Module (ECM) necessary (e.g. cruise control system). This "writing" function is not possible with the generic scan tool, therefore it is necessary to use the Vehicle Diagnosis & Service Syst. (VAS5052) in On Board Diagnostic (OBD) function for this purpose.

- Procedure to replace Engine Control Module (ECM):

Final procedures

After connecting harness connectors to Engine Control Module (ECM), the following work steps must be performed in the mentioned sequence:

1. Check DTC memory => [ Diagnostic Mode 03 - Read DTC Memory ] Diagnostic Mode 03 - Read DTC Memory.

2. If necessary, erase DTC memory => [ Diagnostic Mode 04 - Erase DTC Memory ] Diagnostic Mode 04 - Erase DTC Memory.

3. If DTC memory was erased, generate readiness code. => [ Readiness Code ] Monitors, Trips, Drive Cycles and Readiness Codes