Introduction

INTRODUCTION
There are three levels of ventilation systems available on this vehicle. There is a heater only system, a base A/C-Heater system, and a dual zone A/C-Heater system. A optional rear A/C-Heater system is also available.

Both the heater only and the two A/C-Heater systems share many of the same components. The circuit descriptions for all three are covered in this section. Where one system is different in one aspect or another it will be noted in the circuit descriptions, and the wiring diagrams.

The HVAC controls all functions of the system by measuring the resistance in circuits, supplying power and ground to components, activating motors, and controlling the ground path for the blower motor.