Checking Components and Wiring

Checking Components And Wiring







Activate the control valve (2) to check its function. The valve must click at activation.

Connect a vacuum pump to the control valve terminal (for hoses connected to the intake manifold) and pump a vacuum. Listen for leakage. Check the stability of the pressure on the gauge. The valve is leaking if the pressure drops.

Check the vacuum hoses for leakage and blockages between:
- the intake manifold and the vacuum tank (1)
- the vacuum tank (1) and the control valve(2)
- the control valve (2) and the vacuum motor (3)

Check that all vacuum hoses are correctly connected on the above components.

Check that the dampers (4) can move freely and that nothing is obstructing them.

HINT: Check the function by pumping a vacuum to the vacuum motor.

Remedy as necessary.

Other Information
- For control valve replacement: Distribution damper intake pipe, replacing

Continue: Refer to Verification. Verification