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VTEC Solenoid Valve Test

  1. Disconnect the VTEC solenoid valve 1P connector.
  2. Measure resistance between the VTEC solenoid valve 1P connector terminal No. 1 (A) and body ground.
    • If the resistance is as specified, go to step 3.
    • If the resistance is not as specified, replace the VTEC solenoid valve.

      Resistance: 14-30 Ω 

      Fig 1: Measuring Resistance Between VTEC Solenoid Valve 1P Connector Terminal No. 1 And Body Ground
      G04546123Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Remove the VTEC solenoid valve/oil filter assembly (A) from the oil pump, and check the VTEC solenoid valve filter (B) for clogging. If there is clogging, replace the VTEC solenoid valve filter, the engine oil filter, and the engine oil.
    Fig 2: Removing VTEC Solenoid Valve/Oil Filter Assembly
    G04546124Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. If the filter is not restricted, remove the VTEC solenoid valve 1P connector (A) and push the valve (B) with your finger to check its movement. If the valve moves freely, it is normal, check the engine oil pressure. If the valve binds or sticks, replace the VTEC valve assembly.
    Fig 3: Removing VTEC Solenoid Valve 1P Connector And Pushing Valve
    G04546125Courtesy of AMERICAN HONDA MOTOR CO., INC.
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