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Home >> Mazda >> 2006 >> 6 s, 4D Wagon, Automatic >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 12 (Engine Mechanical [Service Information L3 With TC)) >> Oil Control Valve (OCV) Inspection >> Able to Keep Idling >> When not using the SST (WDS or equivalent)

When not using the SST (WDS or equivalent)

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect the OCV connector.
  2. Start the engine and idle it.
  3. When applying battery positive voltage between the oil control valve terminals, verify if the engine rough idles or stalls.
    • If it idles roughly or stalls, verify the timing chain assembly (valve timing).
    • If it does not idle roughly or stall, perform the following inspection.
      Fig 1: Identifying Oil Control Valve Connector Terminals
      G04324484Courtesy of MAZDA MOTORS CORP.
      NOTE:
      • When applying battery positive voltage between the oil control valve terminals, the connection of the positive and negative cables can be either terminal A or B.
      1. Inspect OCV operation.
      2. Inspect the harnesses and connectors between the OCV and PCM for a disconnection and short circuit.
      3. Inspect the hydraulic passage for leakage.

        Hydraulic passage 

        Between the oil pressure switch and the OCV 

        Between the OCV and the camshaft 

        Oil passage inside the camshaft 

      4. If the inspected parts are normal, replace the variable valve timing actuator.
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