Test condition:
Ignition on.
No faults stored.
Battery voltage above 11.5 V.
All electrical loads switched off.
Throttle at idling position.
If cruise control is fitted, it must be working properly.
Note:
The basic setting matches ("adapts") the throttle control unit to the engine control unit.
Adaption must be done when:
The throttle control unit has been removed from the vehicle.
The throttle control unit has been replaced.
The electric power to the engine control unit has been disconnected.
The engine control unit has been replaced.
Procedure:
Chosse the function: Thottle control unit.
The throttle control unit operates in the min and max positions and several different intermediate positions. The control unit stores the corresponding throttle angle in the permanent memory. This process take about 10 seconds. After adaption, the throttle returns to the starting position briefly, then closes.
Check the values in adaption step and adaption status. Prescriebed value adaption steps must be counted upwards from 0 to 8; adaption status must change from "ADP on..." to "ADP OK" / "ADP Error".