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The climate control system is controlled by :

Manual input from the operator, via the center console located control panel.
Automatically by means of the A/CCM.

Output is based upon input from the following devices:

Motorized In-car aspirator
External air temperature sensor
Coolant temperature sensor
Heater 'air-off' (the temperature of the air leaving the matrix fins) temperature sensor
Evaporator 'air-off' (the temperature of the air leaving the evaporator fins) temperature sensor
Solar sensor
Left hand blower recirculation / fresh air flap potentiometer
Right hand blower recirculation / fresh air flap potentiometer
Upper air distribution box (ADB) center and side face flap servomotor potentiometer
ADB defrost flap servomotor potentiometer
Air conditioning unit Foot flap servomotor potentiometer
Air conditioning unit Cool Air Bypass flap servomotor potentiometer
Center vent assembly temperature differential potentiometer
Thumbwheel controls on the facia vent assemblies which provide manual adjustment of the airflow volume.
Road and engine speed signals input to the A/CCM

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

System Controls

Use the Manual With the Right Hardware

When to See a Mechanic