Mazda 6. Manual — part 22
F–24
EMISSION SYSTEM
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PULSATION REDUCE CHAMBER DESCRIPTION
A6E391601007T03
•
A pulsation reduce chamber has been adopted
between the purge solenoid valve and the
charcoal canister to eliminate pulsation that
occurs during the purge solenoid valve operation,
preventing the pulsation from being transmitted to
the charcoal canister.
.
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THREE-WAY CATALYTIC CONVERTER (TWC) DESCRIPTION
A6E391620500T01
Features
•
Due to the shorter distance to the catalytic converter, temperature decrease of exhaust emission is prevented
and catalyst is more efficient.
•
Temperature decrease of exhaust emission is further prevented with double layered exhaust manifold pipes.
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1
EGR valve
2
Purge solenoid valve
3
Evaporative gas check valve (one-way) (L.H.D.)
4
PCV valve
5
Ventilation hose
6
TWC
7
Charcoal canister (L.H.D.)
8
Charcoal canister (R.H.D.)
9
Pulsation reduce chamber (R.H.D.)
10
Rollover valve
11
Check valve (two-way)
1
Pulsation reduce chamber
2
To purge solenoid valve
3
To charcoal canister
A6E3916W022
CONTROL SYSTEM
F–25
F
OUTLINE
A6E394018881T01
•
The construction and operation of the Mazda6 (GG) is essentially carried over from that of the current MPV
(LW) FS engine model, except for the following.
New Devices
•
MAP sensor which monitoring the intake manifold absolute pressure is the same function as BARO sensor.
Similar Devices
CKP sensor
•
Output wave form is different.
CMP sensor
•
Output wave form is different.
New Systems
Variable air duct control
•
To improve the engine performance at high engine speed.
Controller area network (CAN)
•
To simplify the system.
Similar Systems
Idle air control (IAC)
•
Same function as MPV (LW) FS engine model except for the followings.
— Adopt the MAP factor to the feedback correction to improve the precise control.
— Idle speed is different to match the vehicle characteristics.
Variable intake-air system (VIS)
•
Same function as VICS but operation condition is different to match the vehicle characteristics.
Variable tumble control system (VTCS)
•
Same function as MX-5 (NB) but operation condition is different to match the vehicle characteristics.
Variable valve timing control system
•
Same function as MX-5 (NB) but operation condition is different to match the vehicle characteristics.
Fuel injection control
•
Same function as MPV (LW) FS engine model except for the following.
— Adopt the BARO correction to improve the precise control.
— Adopt the Rear HO2S feedback correction to improve the emission performance.
Electronic spark advance (ESA) control
•
Same control as 626 (GF) FS engine model
Purge control
•
Adopt the BARO correction to improve the emission performance
Heated oxygen sensor heater control
•
Same control as 323 (BJ) FS engine model
A/C cut-off control
•
Operation condition is different to match the vehicle characteristics.
Immobilizer system
•
Same function as MPV (LW) FS engine model however it equipped into PCM to simplify the system.
CONTROL SYSTEM
F–26
CONTROL SYSTEM
Input Device
×
:Applied
—: Not applied
Item
Signal
Mazda6
(GG)
Current
MPV (LW)
FS
Remark for new model
MAF/IAT sensor
MAF and IAT
×
Same as 323 (BJ) ZM engine model
TP sensor
TP
×
Same function as MPV (LW) FS engine model
MAP sensor
MAP
×
—
Same function as BARO sensor of MPV (LW) FS
engine model
ECT sensor
ECT
×
Same function as MPV (LW) FS engine model
CMP sensor
Cylinder
identification
×
Same function as MPV (LW) FS engine model
Output wave form is different.
CKP sensor
Engine
revolution
×
Same function as MPV (LW) FS engine model
Output wave form is different.
Knock sensor
Knocking
×
Same function as MPV (LW) FS engine model
HO2S (Front, Rear)
Oxygen
concentration
×
Same function as MPV (LW) FS engine model
BARO sensor
BARO
×
Same as MPV (LW) FS engine model
Neutral switch
Load/no load
distinction
×
Same as MPV (LW) FS engine model
Clutch switch
Load/no load
distinction
×
Same as MPV (LW) FS engine model
Brake switch
Brake pedal
condition
×
Same as MPV (LW) FS engine model
PSP switch
P/S oil pump
load condition
×
Same function as MPV (LW) FS engine model
VSS
Vehicle speed
×
Same as MPV (LW) FS engine model
A/C switch, refrigerant
pressure switch (high,
low pressure)
A/C operational
×
Same as MPV (LW) FS engine model
Refrigerant pressure
switch (middle pressure)
A/C compressor
load
×
Same as MPV (LW) FS engine model
Battery
Battery voltage
×
Same as MPV (LW) FS engine model
Generation voltage
(Generator terminal P)
Generation
voltage
×
Same as MPV (LW) FS engine model
Immobilizer unit
Immobilizer
system
communication
×
Same function as MPV (LW) FS engine model
CONTROL SYSTEM
F–27
F
Output Device
×
:Applied
—: Not applied
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Item
Signal
Mazda6
(GG)
Current
MPV (LW)
FS
Remark for new model
IAC valve
IAC
×
Same function as MPV (LW) FS engine model
Idle speed is different to match vehicle characteristics.
VIS solenoid valve
VIS
×
Same function as VICS of MPV (LW) FS engine model
Operation condition is different.
VTCS solenoid valve
VTCS
×
—
Same function as MX-5 (NB)
Operation condition is different.
Oil control valve (OCV)
Variable valve
timing control
×
—
Same function as MX-5 (NB)
Operation condition is different.
Fuel injector
Fuel injection
control
×
Same function as MPV (LW) FS engine model
Fuel injection timing is different.
Add BARO correction
Add Rear HO2S feedback correction
Fuel pump relay
Fuel pump
control
×
Same as MPV (LW) FS engine model
Ignition coil
ESA control
×
Same as 626 (GF) FS engine model
EGR valve
EGR control
×
Same as MPV (LW) FS engine model
Purge solenoid valve
Purge control
×
Same function as MPV (LW) FS engine model
Add BARO correction
Heated oxygen sensor
heater
(Front, rear)
O2S heater
control
×
Same as 323 (BJ) FS engine model
Field coil
(Generator terminal D)
Generator
control
×
Same as MPV (LW) FS engine model
Cooling fan relay
Electric fan
control
×
—
New system adopted
A/C relay
A/C cut-off
control
×
Same function as MPV (LW) FS engine model
Operation condition is different.
Controller area network
(CAN)
Information
function
×
—
New system adopted
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