Test condition:
Ignition on.
No faults stored.
Battery voltage above 11,5 V.
All electrical loads switched off.
Throttle at idling position.
Intake air temperature abowe 6 °C.
Engine temperature between 5-115 °C
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.
When the throttle control unit is changed, the EGR valve must also be adapted.
Adaption must be done when:
The throttle control unit or EGR valve has been removed from the vehicle.
The throttle control unit or EGR valve has been replaced.
The electric power to the engine control unit has been disconnected.
The engine control unit has been replaced.
Lanbda probes, injectors, or catalytic converter have been replaced.
Leaks in the induction system have been sealed
Procedure:
Chosse the function: Thottle control unit.
The throttle control unit disconnects the electric power supply from the throttle unit. When this is performed, the throttle is pushed forward to its emergency driving stop. The positions of the throttle sensors for this setting are stored in the engine control unit. After this, the throttle is opened. When it has reached its position, the power supply is disconnected. The throttle must then return mechanically to the emergency driving position within a specified time. After this, the throttle control unit closes the throttle and the stored values from the throttle sensors are stored in the engine control unit.
Check the values in adaption step and adaption status. Prescriebed value: adaption steps must be counted upwards from 0 to 9; adaption status must change from "ADP on" to "ADP OK" / "ADP Error".
Continue with adaption of EGR valve.