3843626

Is the measured voltage within specifications?

YES

Go to "Check DR Direction Actuator" procedure.

Substitute with a known-good A/C Control Unit and check for proper operation.

If the problem is corrected, replace A/C Control Unit and then go to "Verification of Vehicle Repair" procedure.

Check actuator motor

(1)

Ignition "OFF".

(2)

Disconnect DR Direction Actuator.

(3)

Connect (+) terminal of battery to terminal 3 of DR 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?

YES

Go to "Check potentiometer" procedure.

Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace actuator and then go to "Verification of Vehicle Repair" procedure.

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 fig3)

Door position	Voltage	Error Detecting Condition
VENT	0.3±0.15V	Undervoltage : 0.10V or less
DEF	4.7±0.15V	Overvoltage : 4.92V or more

Fig3) Specifications : Voltage value of Direction potentiometer as a function of temp door position.

(4)

Is the measured voltage within specifications in fig3)?

YES

Check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "Verification of Vehicle Repair" procedure.

Substitute with a known-good actuator and check for proper operation. If the problem is corrected, replace actuator and then go to "Verification of Vehicle Repair" procedure.