Toyota RAV4 manuals

Toyota Sienna Service Manual: Air Inlet Damper Position Sensor Circuit

DESCRIPTION

Air Inlet Damper Position Sensor Circuit

This sensor detects the position of the air inlet control servo motor and sends the appropriate signals to the A/C amplifier. The position sensor is built in the air inlet control servo motor.

The position sensor's resistance changes as the air inlet control servo motor arm moves.

It outputs voltage (5 V) that is input to terminal 1 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 Inlet 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 display on the intelligent tester.

DATA LIST / AIR CONDITIONER

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

Result

2 INSPECT AIR INLET CONTROL SERVO MOTOR

INSPECT AIR INLET CONTROL SERVO MOTOR

(a) Remove the air inlet control servo motor.

(b) Disconnect the connector from the air inlet 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 INLET CONTROL SERVO MOTOR

(e) As the air inlet control servo motor moves from RECIRCULATION to FRESH, the resistance decreases gradually without interruption.

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

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

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

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

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

Standard resistance

Standard resistance

Air Mix Damper Position Sensor Circuit (Passenger Side)
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Air Outlet Damper Position Sensor Circuit
DESCRIPTION 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 contro ...

Other materials:

Check for open circuit
(a) For an open circuit in the wire harness in Fig. 1, the resistance or voltage, as described below. (b) Check the resistance.  Check the resistance Standard resistance (Fig. 2) HINT: Measure the resistance while lightly shaking the wire harness vertically and horizontally. I ...

Removal
1. PRECAUTION CAUTION: Be sure to read "PRECAUTION" thoroughly before servicing. 2. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait for 90 seconds after disconnecting the cable to prevent the airbag working. 3. REMOVE FRONT SEAT ASSEMBLY (for Manual Seat) 4. REMOVE ...

Driving position memory
Your preferred driving position (the position of the driver’s seat and outside rear view mirrors) can be recalled by pressing a button. Two different driving positions can be recorded into memory. Recording procedure Check that the shift lever is in P. Turn the engine switch to IGNI ...

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