With Manufacturer's Scan Tool

Engine Control Module, Adapting to Throttle Valve Control Module

The adaptation teaches the Engine Control Module (ECM) various positions of the throttle valve when the ignition is on and the engine is stopped. These positions are stored in the control module Throttle valve position feedback takes place through the two throttle valve drive angle sensors.

The adaptation must be performed if:
- the supply voltage has been interrupted
- the throttle valve control module has been removed and reinstalled
- the throttle valve control module has been replaced
- another engine has been installed, and another throttle valve control module along with it

Special tools and equipment
- VAG 1551 Scan Tool (or VAG 1552 mobile scan tool) with VAG 1551/3 cable

Test condition
- There must not be any DTCs stored in DTC memory, Check DTC memory.
- Battery voltage must be at least 11.5 volts.
- Throttle valve must be in Closed Throttle Position (CTP)
- Coolant temperature must be 5-95°C See Display group 04, display field 3
- If a cruise control system is present, it must be properly adjusted.

Procedure

- Connect V.A.G 1551 scan tool (VAG 1552). Switch ignition on and select Engine Control Module (ECM) using address word 01.

Indicated on display

Rapid data transfer HELP
Select function XX

- Press buttons -0- and -4- to select "Basic Setting" function 04. Press -Q- button to confirm input.

Indicated on display

Basic Setting HELP
Input display group number XXX

- Press buttons -0-, -6- and -0- to select "Display group number 60". Press -Q- button to confirm input.

Indicated on display (1 - 4 = display fields)

Basic Setting 60 ->
xxx% xxx% x ADP. runs

After pressing the Q-button, the throttle valve actuator will be switched on without current.

In this condition, the throttle valve will be drawn into an emergency position by a mechanical spring, which is located in the throttle valve control module. The values supplied by the two angle sensors in this emergency position are stored by the Engine Control Module (ECM).

Next, the throttle valve is opened by a certain value. If this value is reached, the throttle valve actuator is once again de-energized. Now, the mechanical spring must close the throttle valve to the previously learned emergency position within a specified time (spring test).

Then, the throttle valve is closed by the throttle valve actuator; the values supplied by the angle sensors in the throttle valve control module are stored by the Engine Control Module (ECM).

If Engine Control Module (ECM) should de-energize throttle valve actuator during driving operation, this is expressed by an increased, surging idle speed (RPM). The engine accepts gas only after great delay.

Indicated on display (1 - 4 = display fields)

Basic Setting 80 ->
xxx% xxx% 9 ADP.OK

The adaptation has been successfully completed.

To store the values:
- Switch ignition off.

NOTE: If the basic adjustment is canceled by the control module, this can have the following causes:

- The throttle valve does not reach the mechanical idle stop due to dirt, for example carbon buildup, or due to binding.
- Battery voltage is too low.
- Throttle valve control module or wire connection is defective.

After a cancellation, a DTC is entered in the DTC memory. The next time the ignition is switched on, the basic adjustment is automatically performed again.

- End basic adjustment of the engine by pressing the -> key.
- Press buttons -0- and -6- to select "End output" function 06. Press -Q- button to confirm input.