Component Inspection

Air Conditioner

Air Conditioner - B2409 Direction Control Motor-Driver - Component Inspection

Component Inspection

Check DR Direction Actuator.
1. Check actuator motor
(1) Ignition "OFF"
(2) Disconnect DR Direction Actuator.
(3) Connect (+) terminal of battery to terminal 3 of Direction Actuator and (-) terminal to terminal 4
(4) Verify that the temperature actuator operates to the DEF position
(5) Verify that the temperature actuator operates to the VENT position with reverse connecting. ((+) to 4 and (-) to 3)




(6) Dose the actuator work properly?





2. Check actuator potentiometer
(1) Ignition "ON".
(2) Connect DR Direction Actuator.
(3) Measure voltage between terminal "5" and "6" of DR Direction Actuator while operating the temp switch.

Specification : Refer the specifications in fig 3)




Fig.3)





Fig.3) Specifications : Voltage value of Direction potentiometer as a function of temp door position.
(4) Is the measured voltage within specifications in fig 3)?





Check A/C Control Unit
1. Engine "ON".
2. Connect A/C Control Unit.
3. Measure voltage between terminal "19" and "20" of A/C Control Unit while operating the temp switch.

Specification : Approx. 12 V




4. Is the measured voltage within specifications?