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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 570 (Engine Mechanical [Service Information MZI-3.7]) >> Oil Control Valve (OCV) Inspection [MZI-3.7] >> Spool Valve Operation Inspection

Spool Valve Operation Inspection

WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the negative battery cable.
  2. Remove the OCV. (See OIL CONTROL VALVE (OCV) REMOVAL/INSTALLATION [MZI-3.7] .)
  3. Verify that the spool valve in the OCV is in the maximum valve timing retard position as indicated in the figure.
    • If not as specified, replace the OCV.
    4. Fig 1: Identifying Spool Valve (Maximum Valve Timing Retard Position)
    G04969481Courtesy of MAZDA MOTORS CORP.
  4. Verify that the battery is fully charged.
    • If not as specified, recharge the battery.
  5. Apply battery positive voltage between the OCV terminals and verify that the spool valve operates and moves to the maximum valve timing advance position.
    Fig 2: Identifying OCV Connector Terminals
    G04969480Courtesy of MAZDA MOTORS CORP.
    • If not as specified, replace the OCV.
      NOTE:
      • When applying battery positive voltage between the OCV terminals, the connection can be either of the following
        • Positive battery cable to terminal A, Negative battery cable to terminal B
        • Positive battery cable to terminal B, Negative battery cable to terminal A
    6. Fig 3: Identifying Spool Valve (Valve Timing Retard To Advance Position)
    G04969483Courtesy of MAZDA MOTORS CORP.
  6. Stop applying battery positive voltage and verify that the spool valve returns to the maximum valve timing retard position.
  7. Install in the reverse order of removal.
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