The heating and cooling system can be controlled manually by pressing buttons or turning knob(s) other than the AUTO button. In this case, the system works sequentially according to the order of buttons or knob(s) selected.
1. Start the engine.
2. Set the mode to the desired position. For improving 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 position.
5. Set the fan speed control to the desired speed.
6. If air conditioning is desired, turn the air conditioning system on. Press the AUTO button in order to convert to full automatic control of the system.
1. Press the AUTO button. The modes, fan speeds, air intake and air-conditioning will be controlled automatically by setting the temperature. 2.
The mode selection button controls the direction of the air flow through the ventilation system. The air flow outlet port is converted as follows: Refer to the illustration in the “Manual climate control system”.
Repair procedures Oil Specification 1. The HFC-134a system requires synthetic (PAG) compressor oil whereas the R-12 system requires mineral compressor oil. The two oils must never be mixed. 2. Compressor (PAG) oil varies according to compressor model.
Components and components location Components Location 1. Mode control actuator Description and operation Description The mode control actuator is located at the heater unit. It adjusts the position of the mode door by operating the mode control actuator based on the signal of the A/C co