Mazda CX-9 2007 Service Highlights page 323

MAGNETIC CLUTCH CONSTRUCTION
• Consists of the following parts:
— Pressure plate
— Shim
— Snap ring
— A/C compressor pulley
— Stator
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NG: REFRIGERANT PRESSURE SWITCH
REFRIGERANT PRESSURE SWITCH CONSTRUCTION
• A triple pressure type has been adopted.
• Consists of the low/high-pressure switch that protects the refrigerant cycle by cutting the A/C signal when
pressure in the refrigerant cycle is abnormally high or low, and the medium-pressure switch that outputs an
idling increase signal according to the A/C compressor operation load.
Medium-pressure Switch
• When the refrigerant pressure reaches approx. 1.44 MPa {14.7 kgf·cm
on, and a cooling fan control signal is sent to the PCM.
REFRIGERANT PRESSURE SWITCH
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NG: SOLAR RADIATION SENSOR
SOLAR RADIATION SENSOR CONSTRUCTION
• A photo diode (light-receiving diode) has been adopted.
• There are two photodiodes in each sensor and
each of them sends signals from the driver and
passenger-side to the front climate control unit.
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NG: AMBIENT TEMPERATURE SENSOR
CONTROL SYSTEM
PRESSURE PLATE
OPERATION PRESSURE
1.11—1.35 {11.4—13.7, 161—195}
ON
OFF
1.44—1.60 {14.7—16.3, 209—232}
MPa {kgf/cm
SOLAR RADIATION
SENSOR
SNAP RING
SNAP RING
SHIM
A/C COMPRESSOR PULLEY
2
, 209 psi} or more, the contact turns
PCM
COOLING FAN
CONTROL SIGNAL
MEDIUM-PRESSURE
SWITCH
2
, psi}
A
DRIVER SIDE
PASSENGER SIDE
C B
C B A
id074000101300
STATOR
am8rrn00000317
id074000103700
07-40
am8rrn00000287
id074000103800
ac9uun00000220
07-40–11