Toyota RAV4 manuals

Toyota Sienna Service Manual: Air Mix Damper Control Servo Motor Circuit (Passenger Side)

DESCRIPTION

The air mix control servo motor (air mix damper servo sub-assembly) is controlled by the A/C amplifier.

The air mix control servo motor moves the air mix damper by rotating (normal, reverse) with electrical power from the A/C amplifier.

This adjusts the mix ratio of the air that passes through the evaporator and heater core and controls the air flow temperature. Air flow temperature changes when the air mix damper is moved to the target point.

The target point can be detected by the air mix damper position sensor.

WIRING DIAGRAM

Air Mix Damper Control Servo Motor 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.

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

DATA LIST / AIR CONDITIONER

OK: When the target position is "MAX. COOL" (-5%), the actual opening angle is 19.0% or less.

When the target position is "MAX. HOT" (105%), the actual opening angle is 81.0% or more.

Result

2 PERFORM ACTIVE TEST BY 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 item below in the ACTIVE TEST and then check the air flow temperature by hand.

ACTIVE TEST / AIR CONDITIONER

OK: When the lever is moved to the "MAX. HOT" side, warm air comes out.

When the lever is moved to the "MAX. COOL" side, cool air comes out.

Result

3 PERFORM ACTUATOR CHECK

(a) Enter the actuator check mode (See page AC-15).

(b) Press the DEF switch and change to the step operation.

(c) Check the air flow temperature by hand.

OK: Air flow temperature changes in accordance with each display code.

Result

4 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.

(c) Connect the positive (+) lead from the battery to terminal 5 and the negative (-) lead to terminal 4, then check that the lever turns to the "MAX. HOT" position smoothly.

OK: Lever turns to "MAX. HOT" position smoothly.

(d) Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 5, then check that the lever turns to the "MAX. COOL" position smoothly.

OK: Lever turns to "MAX. COOL" position smoothly.

5 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

Rear Air Outlet Damper Position Sensor Circuit
DESCRIPTION This sensor detects the position of the rear air outlet control servo motor and sends the appropriate signals to the A/C amplifier. The position sensor is built in the rear air o ...

Air Inlet Damper Control Servo Motor Circuit
DESCRIPTION The air inlet control servo motor is controlled by the A/C amplifier and moved to the desired position. The air inlet control servo motor switches the air inlet mode by rotating (n ...

Other materials:

Reassembly
1. INSTALL 2ND BRAKE PISTON O-RING (a) Coat 2 new O-rings with ATF, and install them in the 2nd brake piston. NOTICE: Make sure that the O-ring is not twisted or pinched. 2. INSTALL 2ND BRAKE PISTON (a) Coat the 2nd brake piston with ATF, and install it to the 2nd brake cylinder. NO ...

GPS Antenna Error/ GPS Antenna Power Source Error
DTC 58-40 GPS Antenna Error DTC 58-41 GPS Antenna Power Source Error DTC 80-40 GPS Antenna Error DTC 80-41 GPS Antenna Power Source Error DESCRIPTION DTC No. DTC Detection Condition Trouble Area 58-40 GPS antenna error Wire harness  GPS ...

Seat heaters
For driver’s seat For front passenger’s seat On The indicator light comes on. Adjusts the seat temperature The further you move the dial upward, the warmer the seat becomes. The seat heaters can be used when the engine switch is in the “ON” position (vehicles ...

© 2011-2019 Copyright www.tsienna.net