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A/T 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 valve and repeat test.
4. Attach battery positive terminal to black/yellow terminal of control box connector and battery negative terminal to blue terminal.
5. Apply vacuum to hose.
6. If vacuum is held, replace valve and repeat test.