Passat Wagon L4-2.0L Turbo (BPY) (2008)
Engine Control Module: Service and Repair
Motronic Engine Control Module J623, Replacing
Motronic Engine Control Module J623, Replacing
Removing
Special tools, testers and auxiliary items required
‹› Heat gun.
‹› When the Motronic Engine Control Module (ECM) (J623) electrical harness connectors are disconnected, the adaptation values are erased and the
DTC memory content remains intact.
Work procedure
Check the identification of the previous Motronic Engine Control Module (ECM) (J623) as follows:
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Connect the scan tool.
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Switch the ignition on.
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Using the scan tool, select "Vehicle information".
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Select " Calibration Identification" in vehicle information.
The electronic control module identification number will be displayed.
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Record the electronic control module identification number.
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End diagnosis and switch the ignition off.
Procedure
The Motronic Engine Control Module (ECM) (J623) may be equipped with or without an Antitheft bracket or locking plate. Refer to the following
removal and installation procedures:
For Motronic Engine Control Module (ECM) (J623) without Antitheft brackets.
For Motronic Engine Control Module (ECM) (J623) with an Antitheft bracket.
For Motronic Engine Control Module (ECM) (J623) with an Antitheft locking plate.
Motronic Engine Control Module (ECM) (J623) removing and installing without Antitheft brackets.
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Remove the wiper arms.
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Remove the plenum chamber cover.
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Disconnect the Heated Windshield Control Module (J505) electrical harness connector - 1 -.