Help function for manual compression control

This function is a help function for performing a manual compression control. When activating this function, the intake mass is by definition set as zero, the gas block valves is activated, the ignition modules is turned off and the throttle is applied to position 80 °DK.
Note:
The function can only be performed with the engine off.
If the throttle actual position deviates significantly from 80 °DK, must the throttle first be checked before the compression control is performed.
Use STARTER BATTERIES!
After the ignition is turned off, this function is deactivated.
Test conditions:
Procedure:
  1. Start the function.
  2. Check test conditions. Press "OK".
  3. Press "OK" to start the help function.
  4. Use the start button in the engine compartment to perform the manual compression control.
  5. Press "OK" to exit the function.
  6. The function is complete.