Mazda 2009 RX-8, Service Highlights

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CONTROL SYSTEM [13B-MSP]
01-40–9
01-40
End Of Sie
DRIVE-BY-WIRE RELAY CONTROL OPERATION [13B-MSP]
id0140g1170800
Idle Speed Control
x
Controls the throttle valve opening angle so that it is close to the target idle speed calculated by the PCM.
x
The PCM calculates the target throttle opening angle by adding each type of correction to the basic duty value
which is the basis of the throttle valve opening angle, and then sends a duty signal to the throttle valve actuator.
The basic duty value is determined by the target engine speed.
x
Each type of correction is as follows.
APV motor ×
Fuel injector (FP, FS) ×
Fuel injector (RP, RS) ×
Fuel pump relay ×
Fuel pump speed control
relay
×
Ignition coil (T/F, T/R) ×
Ignition coil (L/F,L/R) ×
Air solenoid valve ×
Air pump relay ×
Purge solenoid valve ×
Metering oil pump driver ×
Metering oil pump No.1, No.2 ×
OCV ×
A/F sensor heater ×
HO2S heater ×
A/C relay ×
Cooling fan relay No.1, No.2,
No.3, No.4, No.5
×
Starter relay ×
Generator (terminal D: field
coil)
×
CAN ×
Item
MAIN RELA
Y CONTR
OL
DRIVE-BY
-WIRE RELA
Y CONTR
OL
DRIVE-BY
-WIRE CONTR
OL
S-D
AIS CONTR
OL
FUEL INJECTION CONTR
OL
FUEL PUMP CONTR
OL
FUEL PUMP SPEED CONTR
OL
ELECTRIC SP
ARK AD
V
ANCE CONTR
OL
AIR CONTR
OL
EV
APORA
TIVE PURGE CONTR
OL
METERING OIL PUMP CONTR
OL
OIL PRESURE CONTR
OL
A/F SENSOR HEA
TER, HO2S HEA
TER CONTR
OL
A/C CUT
-OFF CONTR
OL
ELECTRICAL F
AN CONTR
OL
ST
AR
TER CUT
-OFF CONTR
OL
GENERA
TOR CONTR
OL
CAN