This function is used to check that the turbo nozzle moves. The VGT turbo uses a movable nozzle to adjust the inlet pressure for different operating conditions. The nozzle movement is controlled by an actuator located on the turbocharger.
Test conditions:
Parking brake applied.
Ignition key in On position. Engine off.
Procedure:
Press "OK" to start the function.
Check that the turbo nozzle moves.
Function done.
If the function fails, check the test conditions and repair any faults.