honda Workshop Repair Guides

Honda Workshop Service and Repair Manuals

A/C Idle Boost Throttle Controller <--> [Idle Up Control Valve] > < Idle Control Solenoid Valve
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Idle Speed/Throttle Actuator - Electronic: Testing and Inspection
Fast Idle Control Solenoid Valve

1987 Prelude

1.

Disconnect 6 pin connector from control box.

2.

Disconnect No. 23 vacuum hose from vacuum hose manifold and apply vacuum to hose.

3.

If vacuum is not held, replace solenoid valve and repeat test.

4.

Attach battery positive terminal to black yellow terminal of control box connector and battery negative cable to orange terminal.

5.

Apply vacuum to hose.

6.

If vacuum is held, replace valve and repeat test.

A/C Idle Boost Throttle Controller <--> [Idle Up Control Valve] > < Idle Control Solenoid Valve