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. 12V




4. Is the measured voltage within specifications ?