Checking the functionality of the air leak solenoid valve (Honda Accord 3)

The air leak solenoid valve supplies additional air to the air intake manifold. The solenoid valve opens when the engine is idling and when the inlet air temperature is high. The solenoid valve serves to reduce exhaust gases at idle when the air injection into the exhaust manifold is blocked.

Disconnect vacuum hose #27 from the vacuum manifold and connect the vacuum pump.

Disconnect the 8-pin connector on the control box.



Create a vacuum.

If the solenoid valve does not hold vacuum, it should be replaced.

If the solenoid valve holds a vacuum, then you should connect the positive terminal of the battery to the Gray terminal of the 8-pin connector, and the negative terminal to the Black terminal.

Next, create a vacuum.

If the solenoid valve does not hold vacuum, it should be replaced.

If the solenoid valve holds a vacuum, then you should check for a break in the White/Green wire between the control box and terminal 18 of the control unit and the Black wire between the control box and point G7. If the conductors are normal, then you should refer to the diagnostics section of the control module inputs.