Checking the Mechanical Operation of the Flap

Checking the Mechanical Operation of the Flap










- Turn the ignition switch to the OFF position.
- Wait for 10 seconds.
- Open and close the flap valve by hand.
- The flap valve should not bind in any position.
- The spring should return the flap valve to the stop screw.
- No external objects, hoses, cables, etc. must obstruct the movement of the throttle arm.

Is the function correct?

NO - Continue with Checking the Mechanical Operation of the Flap

YES - Checking the Control Module's Flap Motor Output

Can the fault be rectified without changing the throttle body?

NO - Changing Components

YES - Diagnostic Procedure