Throttle Valve

Necessary after: 

• Re-programming DME control unit
• Replacing DME control unit
• Replacing throttle valve

Information 

Consequences of Tester adaptation if conditions for automatic adaptation are not met (violated boundary condition):

• For a fault entry in the load detection range (P0068 + P1069... P1077), the limits are extended in order to prevent incorrect detections  .
• This extension is cancelled if an adaptation is performed when the conditions for automatic adaptation are met, or after 15 warm-up cycles at the latest  .
• (Warm-up cycle = coolant temperature increases by more than 23 °C after start-up and reaches at least 73 ° C) 
• Following manual throttle valve adaptation when ambient conditions are not met, throttle valve adaptation is carried out again automatically as soon as the ambient conditions are met  .
• There is NO 30-second waiting time here, but a slightly delayed engine start is possible once  .

  The ambient conditions for automatic adaptation are as follows:

• Engine off and ignition on for > 30 seconds 
• Accelerator pedal not pressed 
• Vehicle is stationary 
• Power supply for throttle valve adjusting unit is OK 
• Coolant temperature 5 °C... 100 °C 
• Intake air temperature 5 °C... 30 °C 

How? 

1. Ignition on > 30 seconds if preconditions are met.

   or 

   PIWIS Tester:

   1. 1.1. Meet preconditions:
      1. 1.1.1. Engine off.
      2. 1.1.2. Ignition on.
   2. 1.2. Select menu:
      1. 1.2.1. DME
      2. 1.2.2. Maintenance/repairs
      3. 1.2.3. Adaptations
      4. 1.2.4. Throttle valve adaptation
   3. 1.3. Start function by pressing [F12].
      1. 1.3.1. Information
   4. 1.4. Press [F12] for detail view.

      Information 

      1. Adaptation values are deleted or stored in EEPROM when ignition is switched off after control unit run-on has ended.

      This depends on the run-on period of the engine compartment purge fan.

      The run-on period of the engine compartment purge fan AFTER ignition is switched off depends on the engine compartment temperature.

      The run-on period is as follows at the following engine compartment temperatures:

      • < 45 °C: approx. 50 seconds 
      • 45... 70 °C: approx. 200 seconds 
      • > 70 °C: up to 20 minutes 
   5. 1.5. Switch off ignition.