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Home >> Mazda >> 2012 >> 6 i Touring >> Repair and Diagnosis >> External Pages >> Different car >> Section 547 (Symptom Troubleshooting (Engine - L5)) >> Engine Control System Operation Inspection [L5] >> Variable Valve Timing Control System Operation Inspection >> When idling can be continued

When idling can be continued

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 OCV connector.
  2. Warm up the engine and idle it.
  3. Apply battery voltage to the OCV and verify that the engine idles roughly or stalls
    • If the engine idles roughly or stalls, inspect the timing chain component (valve timing deviation).
    • If the engine does not idle roughly or stalls, go to the next step
  4. Remove the OCV and perform spool valve operation inspection.

    (See OIL CONTROL VALVE (OCV) INSPECTION [L5]

    • If not as specified, inspect the following:
      • OCV
      • Harnesses and connectors between OCV and PCM open or short
    • If as specified, inspect the following hydraulic passages for clogging or leakage or both:
      • Oil pressure switch - OCV
      • OCV - camshaft
      • Camshaft internal passage
  5. If they are normal, replace the camshaft pulley (with built-in variable valve timing actuator).
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