General Description

General Description

The climate control system peripherals communicate with the A/CCM via three main device categories, plus the vehicle power supply and ground connections.


Manual inputs Control panel
Face Vent Temperature Control

Automatic inputs Temperature and solar sensors
Flap servo motor potentiometers
Current sensing & coolant flow valve
Power transistor feedback (fan speed control)
Compressor lock sensor (12 cylinder only)
Compressor voltage input
Instrument pack (coolant temp & road speed) (engine revolutions via engine control module)
Refrigerant pressure cut-out switch

Outputs Blower motors (Left & Right) & associated relays
Flap servo motors
Heated front/rear screens & exterior mirror relays
Motorized in-car aspirator
Compressor clutch request to engine control module (not heater-only cars)
Circulation pump relay
Coolant flow valve

Schematic View A/CCM Inputs And Outputs: