Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Honda >> 1994 >> Prelude VTEC >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Air Induction Systems >> Air Intake System >> Intake Control Solenoid Valve (H22A1 & H23A1 Engines)

Intake Control Solenoid Valve (H22A1 & H23A1 Engines)

  1. Start and idle engine. Remove upper vacuum hose from intake control solenoid valve, located at top of engine, on left side. Connect vacuum gauge to solenoid valve. If vacuum does not exist, go to next step. If vacuum exists, increase engine speed to 4600 RPM (H22A1 engine) or 4800 RPM (H23A1 engine). If vacuum still exists, go to step 4). If vacuum no longer exists, solenoid valve is okay.
  2. Disconnect lower vacuum hose of solenoid valve from air chamber. Connect vacuum gauge. If vacuum exists, go to next step. If vacuum does not exist, inspect vacuum line for improper connection, cracks and blockage in hose. If vacuum line is okay, clean manifold port.
  3. Unplug connector from intake control solenoid valve. Measure voltage between Black/Yellow and Pink wire terminals. If battery voltage does not exist, solenoid valve is okay. If battery voltage exists, replace intake control solenoid valve.
  4. Unplug connector from solenoid valve. If vacuum no longer exists, solenoid valve is okay. If vacuum still exists, replace solenoid valve.
scientia non olet · About Mike's Workshop Manuals