This function is used to rev up the engine a number of times with one cylinder turned off at a time. To ensure correct diagnosis, should also compression test and cylinder shutoff be done.
This test can only be performed if there are no faults on the engine speed sensor or the coolant temperature sensor.
Test conditions:
Parking brake applied.
Engine running.
Ignition on.
Gear selector in neutral.
Battery voltage above 20V.
Procedure:
Start the function.
The test is run automatically.
The function is done.
If the function fails, check the test conditions and repair any faults.