Component Inspection

Component Inspection

Check actuator
1. Ignition "OFF"
2. Disconnect DR Direction Potentiometer.
3. Verify that the temperature actuator operates to vent mode when connecting 12V to the terminal 1 and grounding terminal 2.
4. Verify that the temperature actuator operates to the cool position when connecting in the reverse.




5. Dose the actuator work properly ?





Check potentiometer
1. Ignition "ON"
2. Connect DR Direction Potentiometer.
3. Measure voltage between terminal "4" and "5" of DR Direction Potentiometer while operating the mode switch.

Specification : Refer the specifications in fig. 5)













Fig. 5) Specifications : Voltage value of Air Mix potentiometer as a function of position of temperature door.
4. Is the measured voltage within specifications in fig. 5) ?





Check A/C Control Unit
1. Engine "ON"
2. Connect A/C Control Unit.
3. Measure voltage between terminal "14" and "15" of A/C Control Unit while operating the mode switch.

Specification : Approx. 12V




4. Is the measured voltage within specifications ?