Pcm Function; Function List - Mazda RX-8 2004 Service Highlights

PCM FUNCTION

Function List

• The control descriptions are as shown below.
Function
Main relay control
Drive-by-wire control
Drive-by-wire relay control
Sequential dynamic air intake
system (S-DAIS) control
Fuel injection control
Fuel pump control
Fuel pump speed control
Ignition timing control
Secondary air injection
control
Metering oil pump control
Evaporative purge control
Heated oxygen sensor heater
control
A/C cut-off control
Electrical fan control
Generator control
Controller area network
End Of Sie
01–40–42
CONTROL SYSTEM
Turns on the main relay according to requests from the controls, even when the ignition switch
is off.
Controls the drive-by-wire actuator to obtain the optimum throttle valve opening angle
according to the engine operation conditions.
Controls the drive-by-wire relay according to the ignition switch signal.
Controls the VFAD solenoid valve (13B-MSP (High Power)), SSV solenoid valve, VDI solenoid
valve, and APV motor (13B-MSP (High Power)) according to the engine speed condition.
Calculates the optimum fuel injection amount according to the engine conditions, and controls
injection time and injection timing of the injector.
Controls the fuel pump relay according to the eccentric shaft position sensor signal.
Controls fuel pump speed control relay according to the fuel amount required by the engine.
Controls timing of the energization applied to the ignition coils according to the engine
conditions.
Controls the secondary air injection solenoid valve and secondary air injection pump relay at
startup with the cold engine.
Controls the stepping motor in the metering oil pump according to the engine conditions.
Controls the purge solenoid valve according to the driving condition.
Controls the heated oxygen sensor heater when cold.
Controls the A/C relay according to the driving condition.
Controls the cooling fan relays No.1 and No.2/No.3 according to the engine conditions.
Controls the energization applied to the generator field coil according to the engine operation
and electrical load conditions.
Communicates with the instrument cluster, ABS HU/CM or DSC HU/CM, EPS control module,
keyless control module, steering angle sensor TPMS control module and TCM via the CAN.
Description
CHU014018880S01