Heater Mode

The purpose of the heater is to supply heat to the interior of the vehicle. The vehicle operator can determine the level of heat by toggling the temperature control switch, located on the HVAC control module, to any setting. The temperature control can change the vehicle's air temperature regardless of the HVAC mode setting, heater or A/C. The vehicle passenger can adjust their temperature by adjusting the right air temperature switch assembly. Passenger temperatures can be offset 4°C (8°F) cooler or warmer than the drivers setting.

The HVAC control module is the interface between the vehicle operator and the Instrument Panel Integration Module (IPM). The HVAC control module receives power from the rear fuse block on the ignition 3 voltage circuit. The IPM is also powered from the rear fuse block through the ignition 3 voltage circuit along with the battery positive voltage circuit. Both modules are grounded by the ground circuit.