3843657

Check actuator motor

(1)

Ignition "OFF".

(2)

Disconnect intake actuator.

(3)

Connect (+) terminal of battery to terminal 3 of intake actuator and (-) terminal to terminal 4.

(4)

Verify that the actuator operates to the REC position.

(5)

Verify that the temperature actuator operates to the FRE 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 intake actuator.

(3)

Measure voltage between terminal "5" and "6" of intake actuator while operating the intake switch.

Specification : Refer the specifications in fig3)

Door position	Voltage	Error Detecting Condition
FRE	0.3±0.15V	Undervoltage : 0.08V or less
REC	4.7±0.15V	Overvoltage : 4.9V or more

Fig3) Specifications : Voltage value of intake potentiometer as a function of intake 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.