6751720

Component Inspection

■ Check Intake actuator

Ignition "OFF"

Disconnect Intake actuator and A/C control unit main harness connector.

Connect (+) terminal of battery to FRE(+) of intake actuator and (-) terminal to REC(-). (Component side)

Verify that the actuator operates to the REC position

Verify that the Air mix actuator(Temperature actuator) operates to the FRE position reversing the connection polarity.( REC(-) and FRE(+)) (Component side)

Specification : Refer the specifications in Fig.1)

Fig.1)

Actuator harness	FRE(+)	REC(-)	Door position
Battery terminal	12 V	ground	FRE
Battery terminal	ground	12 V	REC

FIG.1) ※ Function of the actuator motor according to terminal connection type. (observe safety regulations)

Is "Door position" display within specifications?

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

■ Check potentiometer

Ignition "OFF"

Disconnect Intake actuator and A/C control unit main harness connector.

Ignition "ON"(ENGINE "OFF").

10.

Measure voltage between Signal(F/B) terminal of Intake actuator harness connector and chassis ground. (Component side)

Specification : Refer the specifications in Fig.2)

Fig.2)

Door position	Voltage
FRE	0.3±0.15V
REC	4.7±0.15V

FIG.2) ※ Voltage value of intake potentiometer as a function of intake door position.

11.

Is "voltage" display within specifications?

	▶ 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 Intake actuator and check for proper operation. If the problem is corrected, replace Intake actuator and then go to "Verification of Vehicle Repair" procedure.