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Info on the UK Honda Civic 1.8 VTI

Modifications > Motor > Engine > Ecu

How to check if IAB's are working

Checking the IAB's are working is a simple task of checking the position of the IAB Control Diaphragm lever with the ignition off and again with the ignition on (without starting the engine).

Note: The IAB Control Diaphragm is situated to the right of the inlet manifold as viewed from the front of the car.

If all is well you should find that the lever is pointing down when the ignition is off and pointing toward the front of the car when the ignition is on.

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