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Home >> Honda >> 1991 >> Accord SE >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Air Induction Systems >> Air Intake System >> Intake Control Solenoid Valve
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Intake Control Solenoid Valve

  1. Start engine, and allow to idle. Remove upper vacuum hose from intake control solenoid valve, and connect a vacuum gauge to solenoid valve. If vacuum is not present, go to step 2). If vacuum is present, raise engine speed to 3700 RPM. If vacuum is still present, go to step 4). If vacuum is no longer present, solenoid valve is okay.
  2. Disconnect lower vacuum hose of solenoid valve from air chamber, and connect a vacuum gauge. If vacuum is present, go to next step. If vacuum is not present, check vacuum line for improper connection, cracks and blockage in hose. If vacuum line is okay, clean manifold port.
  3. Disconnect 2-pin connector from intake control solenoid valve. Measure voltage between Black/Yellow (positive) terminal and White (negative) terminal. If battery voltage is not present, solenoid valve is okay. If battery voltage is present, replace intake control solenoid valve.
  4. Disconnect 2-pin connector from solenoid valve. Check vacuum gauge. If vacuum is no longer present, solenoid valve is okay. If vacuum is still present, replace solenoid valve.
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