Variable Tumble Control System (VTCS) Operation Inspection
WARNING: This page is about a different car, the 2003 Mazda Protege5, 2003 Mazda Protege, 2003 Mazda MX-5 Miata, 2003 Mazda MPV, and 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Connect scan tool to DLC-2. Access ECT PID. Ensure ECT PID reading is between 145°F (63°C) and 152°F (67°C).
- 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:
- Vacuum hose and vacuum chamber for looseness or damage.
- VTCS shutter valve actuator. See VARIABLE TUMBLE CONTROL SYSTEM (VTCS) SHUTTER VALVE ACTUATOR INSPECTION .
- 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 |