Basic conditions for adaptation of the throttle unit:

• ignition on / engine off
• battery voltage above 10 V
• accelerator pedal (AP) released (unaffected)
• the car must be stationary (no speed signal)
• engine coolant temperature (ECT) between 5 and 100 °C
• intake air temperature (IAT) above 5 °C.

During adaptation, the engine control module (ECM) checks that the values obtained are within reasonable limits. This helps to determine whether the throttle unit is functioning correctly or not. When the adaptation has been carried out, all relevant values are stored in the EEPROM memory in the control module so that they can be retrieved if the power supply is broken. This means that if the battery is replaced for example, a new adaptation is not necessary.