This test ensures that there is no leakage in air hoses and lines.
* Higher air pressure than 3.8 bar after the throttle indicates clogged measuring module or nozzle.
* Lower air pressure than 3.2 bar after the throttle indicates leakage on the nozzle side.
* Air control valve's activation greater than 80% indicates too low pressure in reservoir circuit 4, or air leakage between supply module and the reservoir.
Reference values:
* Air control valve's activation 20 - 80%.
* Air pressure before throttle 7.5 - 8.3 bar.
* Air pressure after throttle 3.2 - 3.8 bar.
Test conditions:
Ignition on, engine off.
Procedure:
Start the function.
Follow the instructions in the program.
The function is done.
If the function fails, check the test conditions and repair any faults.