Mazda RX-8 2009 Service Highlights page 100

Operation condition
Cooling fan motor
Function
No.1
Stop
Low speed
rotation
Regular
driving
Middle
cooling
speed
rotation
High speed
rotation
Middle
After
speed
cooling
rotation
Forced High speed
drive rotation
High speed
Fail safe
rotation
Wiring diagram
MAIN RELAY
B+
COOLING
FAN RELAY
NO.1
COOLING
FAN MOTOR
NO.1
TO PCM
End Of Sie
NG: PCM
01-40–24
CONTROL SYSTEM [13B-MSP]
Cooling fan relay
No.2 No.1
Stop OFF
Low speed
ON
rotation
Middle
speed ON
rotation
High speed
ON
rotation
Middle
speed ON
rotation
High speed
ON
rotation
High speed
ON
rotation
COOLING
FAN RELAY
NO.4
COOLING
FAN RELAY
NO.2
No.2/No.3 No.4/No.5
OFF OFF
OFF OFF
ON OFF
ON ON
ON OFF
ON ON
ON ON
COOLING
FAN RELAY
NO.3
COOLING
FAN MOTOR
NO.2
TO PCM TO PCM
Operation condition
ECT less than 97 C {207 F} and A/C
switch OFF
ECT less than 97 C {207 F} and A/C
switch ON (Refrigerant pressure
switch OFF)
ECT is 97—101 C {207—213 F} and
Refrigerant pressure switch OFF
ECT is 101—108 C {214—226 F}
ECT less than 101 C {214 F} and
Refrigerant pressure switch ON
ECT or above 108 C {226 F} and A/C
switch ON (Refrigerant pressure
switch OFF)
ECT or above 108 C {226 F} and A/C
switch OFF
ECT or above 108 C {226 F} and
Refrigerant pressure switch ON
When all the following conditions are
met:
— Ignition switch: OFF
— Drive-by-wire relay: OFF
— Metering oil pump: Other than
during ignition switch off mode
— Engine compartment temperature
high or ECT 110 C {230 F} or
more.
During test mode (during test mode
with M-MDS) when the AP is
depressed.
When a failure occurs in the ECT
sensor.
COOLING
FAN RELAY
NO.5
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