Testing variable intake manifold


This function is used to test the valve for variable intake manifold ("intake manifold tuning, IMT) (intake manifold runner control, IMRC)". The engine coolant temperature should be above 80°C. To reach it, start the engine and run at an engine speed between 2,500-3,500 rpm until correct temperature is reached.

Engine L4:

The IMT-valve is activated and the engine control module monitors the signal from the valve's position sensor to check if the valve has jammed.

Engine L6:

Test cycles are run on the IMT-valve and the engine control module monitors the signal from the valve's position sensor to check if the valve has jammed.

Test conditions:

Procedure:

  1. Start the function.

  2. Follow the instructions in the programme.

  3. The function is done.

    • If the function fails, check the test conditions and repair any faults.