REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mazda 3 (2003 release)

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Mazda
	3
		Operation and maintenance of car
		Engine
			General description new engines models L8, LF, L3
			The mechanical part of engines
			Appendix 1
			Annex 2
			Appendix 3
				Control system
				The principle of operation and the appointment of some components of the control system
					Camshaft position sensor (CMP)
					Camshaft position sensor (CKP)
					The regulator of idling (IAC)
					Management duct with varying characteristics (VAD)
					Start-up system with variable characteristics (VIS)
					The control system of mixing the intake air (VTCS)
					Control valve timing change mechanism
					Fuel injection control
					Office off the air conditioning system
					Management of the electric fan
					Controller Area Network (CAN)
					System of onboard diagnostics
				Fault codes
			Engine Z6 - mechanical part
			Lubrication system
			Cooling system
			Intake system
			Fuel system
			Exhaust and Emission
			Ignition system
			Control system
			Tables
		Transmission
		Chassis
		Steering Gear
		Brakes
		Onboard electric
		Body

printable version

Management duct with varying characteristics (VAD)

The control system opens the shutter VAD VAD air filter only at high engine speeds so that engine power is not reduced at high speeds due to insufficient air flowmeter. The PCM includes a solenoid control valve VAD system to open the damper if the following conditions are met:

- Coolant temperature - above 70 ?� C;

- Engine speed - 5800 ^min-1 above;

- The opening angle of the throttle valve - more than 50%.

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The regulator of idling (IAC)

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Start-up system with variable characteristics (VIS)