Mazda X-5. Manual — part 20
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INTAKE-AIR SYSTEM
01–13–1
01–13
01–13
INTAKE-AIR SYSTEM
INTAKE-AIR SYSTEM OUTLINE
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01–13–1
Features . . . . . . . . . . . . . . . . . . . . . . . . 01–13–1
INTAKE-AIR SYSTEM
STRUCTURAL VIEW [LF]. . . . . . . . . . . 01–13–2
INTAKE-AIR SYSTEM DIAGRAM
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01–13–3
INTAKE-AIR SYSTEM HOSE
ROUTING DIAGRAM [LF]. . . . . . . . . . . 01–13–3
AIR CLEANER CONSTRUCTION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01–13–4
THROTTLE BODY FUNCTION [LF] . . . . 01–13–4
THROTTLE BODY
CONSTRUCTION/OPERATION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01–13–4
Construction. . . . . . . . . . . . . . . . . . . . . 01–13–4
Operation . . . . . . . . . . . . . . . . . . . . . . . 01–13–4
INTAKE MANIFOLD/DYNAMIC
CHAMBER CONSTRUCTION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01–13–5
VARIABLE INTAKE AIR SYSTEM
FUNCTION [LF]. . . . . . . . . . . . . . . . . . . 01–13–5
VARIABLE INTAKE AIR SYSTEM
STRUCTURE [LF] . . . . . . . . . . . . . . . . . 01–13–6
VARIABLE INTAKE AIR SYSTEM
OPERATION [LF] . . . . . . . . . . . . . . . . . . 01–13–6
Operation Conditions . . . . . . . . . . . . . . 01–13–6
Except for Operation Conditions.
(Variable Intake Air Shutter Valve Is
Closed) . . . . . . . . . . . . . . . . . . . . . . . . 01–13–6
When Operation Conditions Are Met.
(Variable Intake Air Shutter Valve Is
Open) . . . . . . . . . . . . . . . . . . . . . . . . . 01–13–7
VARIABLE INTAKE AIR SOLENOID
VALVE FUNCTION [LF] . . . . . . . . . . . . . 01–13–7
VARIABLE INTAKE AIR SOLENOID
VALVE CONSTRUCTION/OPERATION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01–13–7
Construction . . . . . . . . . . . . . . . . . . . . . 01–13–7
Operation . . . . . . . . . . . . . . . . . . . . . . . 01–13–7
VARIABLE INTAKE AIR SHUTTER
VALVE ACTUATOR FUNCTION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01–13–8
VARIABLE INTAKE AIR SHUTTER
VALVE ACTUATOR
CONSTRUCTION/OPERATION
[LF] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 01–13–8
Construction . . . . . . . . . . . . . . . . . . . . . 01–13–8
Operation . . . . . . . . . . . . . . . . . . . . . . . 01–13–8
End of Toc
INTAKE-AIR SYSTEM OUTLINE [LF]
E5U011300000N01
Features
End Of Sie
Improved engine torque
• Variable intake air system adopted
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INTAKE-AIR SYSTEM
01–13–2
INTAKE-AIR SYSTEM STRUCTURAL VIEW [LF]
E5U011300000N02
End Of Sie
AIR CLEANER
VARIABLE INTAKE AIR
SOLENOID VALVE
DYNAMIC CHAMBER
ACCELERATOR PEDAL
THROTTLE BODY
INTAKE MANIFOLD
VARIABLE INTAKE
AIR SHUTTER
VALVE ACTUATOR
FRESH-AIR DUCT
E5U113ZS5010
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INTAKE-AIR SYSTEM
01–13–3
01–13
INTAKE-AIR SYSTEM DIAGRAM [LF]
E5U011300000N04
End Of Sie
INTAKE-AIR SYSTEM HOSE ROUTING DIAGRAM [LF]
E5U011300000N05
End Of Sie
VARIABLE INTAKE AIR
SOLENOID VALVE
: TO PCM
THROTTLE
VALVE
ACTUATOR
CHECK VALVE
VACUUM CHAMBER
DYNAMIC
CHAMBER
VARIABLE
INTAKE AIR
SHUTTER VALVE
VARIABLE INTAKE AIR
SHUTTER VALVE ACTUATOR
AIR CLEANER
INTAKE MANIFOLD
FRESH-AIR
DUCT
THROTTLE BODY
E5U113ZS5001
VENTILATION HOSE
PURGE
SOLENOID VALVE
PCV VALVE
VARIABLE INTAKE AIR
SOLENOID VALVE
VARIABLE INTAKE AIR
SHUTTER VALVE ACTUATOR
TO DYNAMIC CHAMBER
E5U113ZW5001
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INTAKE-AIR SYSTEM
01–13–4
AIR CLEANER CONSTRUCTION [LF]
E5U011313300N01
• Composed of the air cleaner case, air cleaner
cover, and air cleaner element.
• Non-woven fabric (dry type) element has been
adopted.
End Of Sie
THROTTLE BODY FUNCTION [LF]
E5U011313640N03
• An electronic throttle valve has been adopted
which opens and closes the throttle valve with the
actuator according to a signal from the PCM. It
enables precise intake air control at all engine
speed ranges.
End Of Sie
THROTTLE BODY CONSTRUCTION/OPERATION [LF]
E5U011313640N04
Construction
• The throttle body construction is as shown in the
figure.
Operation
• The actuator is driven by a duty signal from the
PCM. This driving force is transmitted to the
actuator gear, middle gear, and valve gear, and
the throttle valve opens.
• Conversely, to close the throttle valve, the
actuator is reversed by an opposite signal from
the PCM, and the throttle valve closes.
• The throttle valve opening angle is input to the
PCM by the TP sensor.
• The throttle body has a control spring. If a
malfunction occurs and the actuator cannot be controlled, the throttle valve is maintained balanced at an
opening angle of approx. 6
° by the spring. Due to this, the required amount of air for vehicle operation is
ensured.
End Of Sie
AIR CLEANER
COVER
AIR CLEANER
ELEMENT
AIR CLEANER
CASE
E5U113ZS5012
THROTTLE
VALVE
ACTUATOR
THROTTLE
VALVE
THROTTLE
BODY
TP SENSOR
E5U113ZS5013
ACTUATOR
MIDDLE GEAR
VALVE GEAR
TP SENSOR
SPRING
THROTTLE
VALVE
THROTTLE
BODY
ACTUATOR
GEAR
E5U113ZS5014
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