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Home >> Mazda >> 2002 >> Protege ES L4-2.0L DOHC >> Repair and Diagnosis >> Powertrain Management >> Fuel Delivery and Air Induction >> Variable Induction System >> Testing and Inspection >> Variable Tumble Control System (VTCS) Inspection
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Variable Tumble Control System (VTCS) Inspection

1. Connect the WDS or equivalent to the DLC-2.
2. Access ECT PID.
3. Verify ECT PID is 65 °C {149 °F} or less.
4. Start the engine.




5. Verify that the rod of tumble swirl control actuator is pulled.
- If the rod is not pulled, inspect the following.
- VTCS shutter valve actuator
- VTCS delay valve
- VTCS chamber
- Vacuum hose
- Tumble swirl control solenoid valve
- Wiring harness and connectors (Main relay - VTCS solenoid valve - PCM terminal 73)

6. Access RPM PID.




7. Inspect the rod operation under the following condition.
- If the rod operation is not as specified, inspect the following:
- Tumble swirl control actuator
- Vacuum delay valve
- Vacuum chamber
- Vacuum hose
- VTCS solenoid valve
- Wiring harness and connectors (Main relay - VTCS solenoid valve - PCM terminal 73)
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