Golf GL L4-2.0L (AEG) (2001)
Engine Control Module: Service and Repair
Engine Control Module (ECM), Replacing
Engine Control Module Replacement
Special tools and equipment
V.A.G1551 Scan Tool (ST) with VAG1551/3 adapter cable
Removing
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First print out control module identification and thereby previous control module coding as follows:
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Connect V.A.G1551 (VAG1552) Scan Tool (ST). Refer to "Scan Tool Testing/VAG1551/Functional Check" See: Testing and Inspection
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Switch ignition on and press buttons -0- and -1- to insert "Engine Electronics" address word 01.
Indicated on display: control module identification and coding
06A906018J MOTRONIC M5.9.2 HSV02
->
Coding 00000
WSC 00000
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Print out control module identification by pressing scan tool PRINT button.
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Press -> button.
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Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
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Turn off ignition.
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Remove wiper arms and plenum chamber cover.
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Release harness connector from control module and disconnect
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Press retaining tab (arrow) to left and remove control module.
Installing
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Place new control module into retaining frame.
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Install control module harness connector and lock.
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Check previous coding and coding of new control module. Refer to "Engine Control Module, Coding", See: Testing and Inspection
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Check DTC memory. If necessary, repair any malfunctions and erase DTC memory. Refer to "Displaying and Reading Trouble Codes/With
Manufacturer Scan Tool/Check DTC Memory (Function 02)" See: Testing and Inspection
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Adapt new control module to throttle valve control module. Refer to "Engine Control Module to Throttle Valve Control Module, Adaptation",
See: Testing and Inspection
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Check idle speed. See: Fuel Delivery and Air Induction/Idle Speed/Testing and Inspection
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Generate readiness code. Refer to "Monitors, Trips and/or Drive Cycle/Generating Readiness Code" See: Testing and Inspection