ENGINE CONTROL SYSTEM OUTLINE [L3]

BME014000140T20

• The control system for Mazda MPV has been adopted or changed the following parts.

New Devices

• MAP sensor which monitoring the intake manifold absolute pressure is same function as BARO sensor.

Similar Devices

CKP sensor
• Output wave form is different.
CMP sensor
• Output wave form is different.

New Systems

Electric fan control module
• To simplified the system
ECT signal for water temperature gauge
• To simplified the system

Similar Systems

Idle air control (IAT)
• The IAC for Mazda MPV has been adopted or changed the following parts.
- Adopt the MAP factor to the feedback correction to improve the precise control
- Idle speed is different to much the vehicle characteristics.
Variable intake-air system (VIS)
• Same function as VICS but operation condition is different to much the vehicle characteristics.
Variable tumble control system
• Operation condition is different to much the vehicle characteristics.
Fuel injection control
• Fuel injection timing is different to improve the fuel economy and emission performance.
Purge control
• Adopt the BARO correction to improve the emission performance
A/C cut-off control
• Operation condition is different to much the vehicle characteristics.

Input Device

Item

Signal

Remark for new model

MAF/IAT sensor
MAF and IAT
Same as current 323 (BJ) ZM engine model
TP sensor
TP
Same function as previous MPV (LW) FS engine model
MAP sensor
MAP
Same function as BARO sensor of previous MPV (LW) FS engine model
ECT sensor
ECT
Same function as previous MPV (LW) FS engine model
CMP sensor
Cylinder identification
Same function as previous MPV (LW) FS engine model
Output wave form is different.
CKP sensor
Engine revolution
Same function as previous MPV (LW) FS engine model
Output wave form is different.
Knock sensor
Knocking
Same function as previous MPV (LW) FS engine model
HO2S (Front, Rear)&
Oxygen concentration
Same function as previous MPV (LW) FS engine model
BARO sensor
BARO
Same as previous MPV (LW) FS engine model
Neutral switch
Load/no load distinction
Same as previous MPV (LW) FS engine model
Clutch switch
Load/no load distinction
Same as previous MPV (LW) FS engine model
Brake switch
Brake pedal condition
Same as previous MPV (LW) FS engine model
PSP switch
P/S oil pump load condition
Same function as previous MPV (LW) FS engine model
VSS
Vehicle speed
Same as previous MPV (LW) FS engine model
A/C switch, refrigerant pressure switch (high, low pressure)
A/C operational
Same as previous MPV (LW) FS engine model
Refrigerant pressure switch (middle pressure)
A/C compressor load
Same as previous MPV (LW) FS engine model
TEN (DLC)
Diagnostic test mode switching
Same as previous MPV (LW) FS engine model
Battery
Battery voltage
Same as previous MPV (LW) FS engine model
Generation voltage (Generator terminal P)
Generation voltage
Same as previous MPV (LW) FS engine model
Immobilizer unit
Immobilizer system communication
Same as previous MPV (LW) FS engine model

Output Device

Item

Signal

Remark for new model

IAC valve
IAC
Same function as previous MPV (LW) FS engine model
Idle speed is different to much vehicle characteristics.
VIS solenoid valve
VIS
Same function as VICS of previous MPV (LW) FS engine model
Operation condition is different.
VTCS solenoid valve
VTCS
Same function as current MX-5 (NB)
Operation condition is different.
Fuel injector
Fuel injection control
Same function as previous MPV (LW) FS engine model
Fuel injection timing is different.
Fuel pump relay
Fuel pump control
Same as previous MPV (LW) FS engine model
Ignition coil
ESA control
Same as current 626 (GF) FS engine model
EGR valve
EGR control
Same as previous MPV (LW) FS engine model
Purge solenoid valve
Purge control
Same function as previous MPV (LW) FS engine model
Add BARO correction
O2 sensor heater
(Front, rear)
O2S heater control
Same as current 323 (BJ) FS engine model
Field coil
(Generator terminal D)
Generator control
Same as previous MPV (LW) FS engine model
Fan control module
Electric fan control
New system adopted
A/C relay
A/C cut-off control
Same function as previous MPV (LW) FS engine model
Operation condition is different.
Generator warning light
Information function
Same function as previous MPV (LW) FS engine model
Water temperature gauge
Information function
New system adopted
Drive information system display
Information function
Same as previous MPV (LW) FS engine model