Volkswagen Workshop Manuals
New Beetle L4-2.0L (AZG) (2003)
Relays and Modules > Relays and Modules - Powertrain Management > Relays and Modules - Computers and Control Systems > Electronic Throttle Control Module > Component Information > Testing and Inspection > Page 212
Electronic Throttle Control Module: Service and Repair
Engine Control Module (ECM), Adapting to Throttle Valve Control Module
The adaptation teaches the engine control module the various positions of the throttle unit when the ignition is switched on and the engine is not running.
Adapting sequence must be performed if:
The engine control module is replaced
The throttle valve control module has been removed and installed or possibly cleaned
The throttle valve control module is replaced
If when installing another engine another throttle valve control module is installed
NOTE: On vehicles fitted with an automatic transmission the transmission control module must also be adapted:
Special tools and equipment
Scan tool VAG 1551 or vehicle system tester V.A.G 1552 with cable VAG 1551/3B
No DTCs must be stored in DTC memory.
The battery voltage must be at least 11.5 V
All electrical consumers, e.g. lights and rear window heating must be switched off
The throttle valve must be at idling speed position (The accelerator must not be operated during the test).
The intake air temperature must be at least 6 °C See display group 04, display zone 4.
Coolant temperature must be 5 to 110 °C See display group 04, display zone 3.
Throttle valve not damaged or dirty.
The cruise control system must be functioning correctly if installed.
Connect scan tool VAG 1551 (V.A.G 1552). Switch ignition on and select engine control module with "Address word" 01.
Indicated on display
Rapid data transfer
Select function XX
Press buttons 0 and 4 for function "Basic Setting" and confirm entry with Q button.
Indicated on display
Press buttons 0, 6 and 0 for "Display group number 60" and confirm entry with Q button.
Indicated on display: (1 to 4 = display zones)
System in basic setting 60
After pressing the Q button the throttle valve positioner is switched so that it is not supplied with voltage at start of test.
In this condition the throttle valve is pulled into an emergency running position by a mechanical spring in the throttle valve control module. The
Thereafter the throttle valve is opened a predetermined value. If this value is achieved, the throttle valve is again switched so that it is not supplied
Then the throttle valve is closed by the throttle valve positioner and the values, which are supplied by the angle sensors in the throttle valve control
If the engine control module switches the throttle valve positioner so that it is without voltage during normal operation, this is indicated by the
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