Golf L4-1.8L Turbo (AWW) (2003)
Engine Control Module: Service and Repair
Engine Control Module (ECM), Replacing
Engine Control Module, Replacing
Special tools and equipment
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VAG1551 scan tool with VAG1551/3B cable
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Check the Quick Reference for additional information about the Immobilizer III Service Procedure
Work sequence
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Print out control module identification and thereby previous control module coding as follows:
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Connect VAG1551 scan tool (VAG1552). Switch ignition on and select engine control module with "Address word" 01. (Connecting scan tool
and selecting engine control module). Refer to "VAG1551 Scan Tool See: Powertrain Management/Computers and Control Systems/Tools and
Equipment
Control module identification and coding is indicated on display e.g.:
06A906032DL
1,8L RA/5VT G 0001
->
Coding 07500
WSC 00000
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Print out control module identification by pressing scan tool print button.
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Press -> key.
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Press keys 0 and 6 for "End data transfer" function and confirm input with Q key.
Indicated on display
Rapid data transfer
HELP
Select function XX
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Switch ignition off.
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Remove windshield wiper arms and the cover for plenum chamber:
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Release connector from control module and pull off.
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Press securing bracket (clip) (arrow) to left and lift out control module.
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Install new control module and press securing bracket to right.
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Check previous coding and the coding of new control module. See: Engine Control Module (ECM), Coding
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Match new control module to throttle valve control module. See: Engine Control Module Adapting to Throttle Valve Control Module
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On vehicles with cruise control system: Check whether this function has been enabled (activated). If "G" is not evident in control module
identification, activate cruise control system. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component
Tests and General Diagnostics/Cruise Control System (CCS), Checking
Vehicles with automatic transmissions:
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Learn kick-down point. See: Kick-Down Point, Learning
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Adapt control module for automatic transmission.
Continued for all vehicles