#
CONTROL SYSTEM OUTLINE [L3]

BME014000000T01
• 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 (IAC)
• 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