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Home >> Mazda >> 2003 >> Protege LX, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls [System & Component Testing] >> Air Induction Systems >> Variable Tumble Control System - MAZDA6 (2.3L) >> Variable Tumble Control System (VTCS) Operation Inspection
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Variable Tumble Control System (VTCS) Operation Inspection

  1. Connect scan tool to DLC-2. Access ECT PID. Ensure ECT PID reading is between 145°F (63°C) and 152°F (67°C).
  2. Start engine. Inspect rod operation. See VTCS SHUTTER VALVE ACTUATOR ROD OPERATION  table. If rod operation is not as specified, check following:
    • Ensure DTC P2009 or P2010 is not displayed. If DTC P2009 or P2010 is displayed, see appropriate DTC testing procedure under DIAGNOSTIC TESTS in SELF-DIAGNOSTICS - MAZDA6 2.3L article.
    • Check VTCS solenoid valve. See VTCS SOLENOID VALVE INSPECTION . If VTCS solenoid valve is faulty, replace VTCS control solenoid valve. If VTCS solenoid valve is okay, check following:
      1. Vacuum hose and vacuum chamber for looseness or damage.
      2. VTCS shutter valve actuator. See VARIABLE TUMBLE CONTROL SYSTEM (VTCS) SHUTTER VALVE ACTUATOR INSPECTION .
      3. Check if VTCS shutter valve is stuck open or closed.
VTCS SHUTTER VALVE ACTUATOR ROD OPERATION

Application - Engine RPM VTCS Shutter Valve Actuator
Less Than 3750 Operates
More Than 3750 Does Not Operate
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