1. Start the engine.
2. Set the mode to the desired position. To improve the effectiveness of heating and cooling :
- Heating:

- Cooling:

3. Set the temperature control to the desired position.
4. Set the air intake control to the outside (fresh) air or recirculated air position.
5. Set the fan speed control to the desired speed.
6. If air conditioning is desired, turn the air conditioning system on.

■ Type A ■ Type B 1. Fan speed control knob 2. Mode selection knob 3. Temperature control knob 4. Air conditioning button (if equipped) 5.
The mode selection knob controls the direction of the air flow through the ventilation system. Air can be directed to the floor, dashboard outlets, or windshield.
Repair procedures Inspection 1. Disconnect the key warning switch connector (A) and ignition switch connector (B) from the steering column. 2. Check for continuity between the terminals.
Description and operation Description The A/C Pressure Transducer (APT) convert the pressure value of high pressure line into voltage value after measure it. By converted voltage value, engine ECU controls cooling fan by operating it high speed or low speed.