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Home >> Mazda >> 2003 >> 6 s, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls [Self-Diagnostics 3.0L] >> System Tests >> Variable Valve Timing Control System Operation Inspection >> When Idling Cannot Be Continued
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When Idling Cannot Be Continued

  1. Remove Oil Control Valve (OCV) and verify spool valve is at maximum retard position. If spool valve is stuck in advance direction, replace OCV. See VARIABLE VALVE TIMING ACTUATOR under VARIABLE VALVE TIMING in REMOVAL & INSTALLATION article.
  2. Connect OCV.
  3. Turn ignition on.
  4. Verify spool valve is at maximum retard position. If spool valve is stuck in advance direction, inspect for short circuit in harnesses or connectors between OCV and PCM.
  5. Inspect Variable Valve Timing (VVT) actuator.
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