Engine Control Module (ECM), Replacing

Engine Control Module (ECM), Replacing

Work procedure
Check control module identification of the previous Engine Control Module (ECM) as follows:
- Connect diagnostic tester.
- Switch ignition on.
- Under address word 33, select "Diagnostic mode 9: Vehicle information".
- Select the vehicle information "Test-ID 04: Calibration Identification".

Control module identification will be displayed, e.g.:
06A906032 LS 4745

- End diagnosis and switch ignition off.







- Remove inner cover, left plenum chamber, to do this, slide center cover -1- of plenum chamber forward out of catch and remove from instrument panel.







- Remove three bolts -1-.







- Lift left cover -1- of plenum chamber in center of instrument panel (arrow -A-) and thereby unclip (front edge clips, back edge clamps).
- Pull cover -1- toward vehicle center out of bracket underneath A-pillar (arrow -B-).







- Carefully press back mounting bracket (arrow).
- Disengage connector from control module and disconnect.
- Pull control module out of mounting frame.
- Insert new control module into mounting frame.
- Install connector for control module and engage.
- Check whether the new control module identification matches the old control module identification.

NOTE:
- To achieve optimal anti-theft protection for the vehicle, an anti-theft immobilizer is installed. The anti-theft immobilizer is a system for enabling and 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 Diagnostic and Information System VAS 5052 in the On Board Diagnostic (OBD) function.
- The great availability of equipment options makes it necessary to adapt the Engine Control Module (ECM) to the vehicle (e.g. throttle valve control module or cruise control system). This "writing" function is not possible with the generic scan tool.

Functions and components, adapting.

See VAS5051 Vehicle Diagnostic, Testing and Information System; Guided Fault Finding; Vehicle System Test or VAS5052; Vehicle Self-Diagnosis

- Generate readiness code. Monitors, Trips, Drive Cycles and Readiness Codes