Mazda 2006 Mazda5 Technical Information Seite 180

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Control System HVAC
Operation
When the A/C is switched on, the climate control unit sends an “A/C on request” signal
via cable to the BCM (Body Control Module). The BCM forwards this information via the
MS-CAN (Middle-Speed CAN) bus to the instrument cluster. From there the signal is
transmitted via the HS-CAN (High-Speed CAN) bus to the PCM, which operates the A/C
relay and the fan control module accordingly.
M5_07004
1 Airflow mode selector switch 11 PCM
2 Evaporator temperature sensor 12 Refrigerant pressure switch
3 A/C switch 13 High/low pressure signal
4 Fan switch 14 A/C cut-off control
5 Climate control unit 15 Electric fan control
6 Defroster control 16 A/C relay
7 A/C compressor control 17 Stator and thermal protector
8 Air intake actuator 18 Magnetic clutch
9 BCM 19 Fan control module
10 Instrument cluster 20 Medium pressure signal
07-4 Service Training Mazda5
Seitenansicht 179
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