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Home >> Mazda >> 2003 >> MPV ES >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls [System & Component Testing] >> Variable Valve Timing System >> Variable Valve Timing Actuator >> Mazda6 (2.3L)
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Mazda6 (2.3L)

  1. Disconnect the negative battery cable.
  2. Remove plug hole plate.
  3. Remove high-tension leads.
  4. Remove Oil Control Valve (OCV) 2-pin harness connector.
  5. Remove ventilation hose.
  6. Remove cylinder head cover.
  7. Confirm groove on rotor and notch on cover of variable valve timing actuator are aligned and fitted. See Fig 1.
    • If groove and notch are not aligned, turn crankshaft clockwise two rotations. Verify that groove and notch are aligned.
    • If groove and notch are still not aligned, replace variable valve timing actuator.
    • If, when turning crankshaft, there is a hitting noise from variable valve timing actuator each time cam passes fully lifted position, it means that variable valve timing actuator is not secured. Replace variable valve timing actuator. Refer to VARIABLE VALVE TIMING ACTUATOR under VARIABLE VALVE TIMING SYSTEM in REMOVAL, OVERHAUL & INSTALLATION article.
Fig 1: Identifying Variable Valve Timing Actuator Alignment Mark - Mazda6 (2.3L)
G00193584Courtesy of MAZDA MOTORS CORP.
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