Toyota RAV4 manuals

Toyota Sienna Service Manual: Air Outlet Damper Position Sensor Circuit

DESCRIPTION

Air Outlet Damper Position Sensor Circuit

This sensor detects the position of the air outlet control servo motor and sends the appropriate signals to the A/C amplifier. The position sensor is built in the air outlet control servo motor. The position sensor's resistance changes as the air outlet control servo motor arm moves.

It outputs voltage (5 V) that is input to terminal 2 and terminal 3 via the variable resistor, and then to the A/ C amplifier. The A/C amplifier determines the arm position based on the input voltage from the position sensor.

WIRING DIAGRAM

Air Outlet Damper Position Sensor Circuit

INSPECTION PROCEDURE

1 READ VALUE OF INTELLIGENT TESTER

(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch to the ON position and turn the intelligent tester main switch on.

(c) Select the items below in the DATA LIST, and read the displays on the intelligent tester.

DATA LIST / AIR CONDITIONER

OK: The display is as specified in the normal condition column.

Result

2 INSPECT AIR OUTLET CONTROL SERVO MOTOR

INSPECT AIR OUTLET CONTROL SERVO MOTOR

(a) Remove the air outlet control servo motor.

(b) Disconnect the connector from the air outlet control servo motor.

(c) Measure the resistance according to the value(s) in the table below

Standard resistance

(d) Measure the resistance according to the value(s) in the table below.

Standard resistance

INSPECT AIR OUTLET CONTROL SERVO MOTOR

(e) As the air outlet control servo motor moves from the FACE side to the DEF side, the resistance decreases gradually without interruption.

3 CHECK HARNESS AND CONNECTOR (AIR OUTLET CONTROL SERVO MOTOR - A/C AMPLIFIER)

CHECK HARNESS AND CONNECTOR (AIR OUTLET CONTROL SERVO MOTOR - A/C AMPLIFIER)

(a) Disconnect the connector from the A/C amplifier.

CHECK HARNESS AND CONNECTOR (AIR OUTLET CONTROL SERVO MOTOR - A/C AMPLIFIER)

(b) Measure the resistance according to the value(s) in the table below.

Standard resistance

REPLACE A/C AMPLIFIER

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