Toyota Sienna Service Manual: Air Mix Damper Position Sensor Circuit (Passenger Side)

Toyota Sienna Service Manual / Air conditioning / Air conditioning system (for automatic air conditioning system) / Actuator check / Air Mix Damper Position Sensor Circuit (Passenger Side)

DESCRIPTION

Air Mix Damper Position Sensor Circuit (Passenger Side)

This sensor detects the position of the air mix control servo motor (air mix damper) and sends the appropriate signals to the A/C amplifier. The position sensor is built in the air mix control servo motor. The position sensor's resistance changes as the air mix 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 Mix Damper Position Sensor Circuit (Passenger Side)

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.

DATA LIST / AIR CONDITIONER

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

Result

2 INSPECT AIR MIX CONTROL SERVO MOTOR

INSPECT AIR MIX CONTROL SERVO MOTOR

(a) Remove the air mix control servo motor.

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

Standard resistance

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

Standard resistance

INSPECT AIR MIX CONTROL SERVO MOTOR

(e) As the air mix control servo motor moves from the cool side to the hot side, the resistance decreases gradually without interruption.

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

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

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

CHECK HARNESS AND CONNECTOR (AIR MIX 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

Solar Sensor Circuit (Driver Side)

DESCRIPTION The solar sensor, which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning in AUTO mode. The output voltage from the solar ...

Air Inlet Damper Position Sensor Circuit

DESCRIPTION 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 ...

Other materials:

Inspection and adjustment procedure
Tire valve Tire pressure gauge Remove the tire valve cap. Press the tip of the tire pressure gauge onto the tire valve. Read the pressure using the gauge gradations. If the tire inflation pressure is not at the recommended level, adjust the pressure. If you add too much air, ...

Air conditioning pressure sensor
ON-VEHICLE INSPECTION 1. INSPECT A/C PRESSURE SENSOR (a) Install the manifold gauge set. (b) Disconnect the connector from the A/C pressure sensor. (c) Connect the three 1.5 V dry cell batteries' positive (+) lead to terminal 3 and the negative (-) lead to terminal 1. (d) Connect t ...

Air Inlet Damper Position Sensor Circuit
DESCRIPTION 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 ar ...