Toyota Sienna Service Manual: 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 outlet control servo motor.
The position sensor's resistance changes as the rear air outlet control servo motor arm moves.
It outputs voltage (5 V) that is input to terminal 2 and terminal 3 via the variable resister, 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
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 REAR AIR OUTLET CONTROL SERVO MOTOR
(a) Remove the rear air outlet control servo motor.
(b) Disconnect the connector from the rear 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 
(e) As the rear air outlet control servo motor moves from FACE to FOOT, the resistance decreases gradually without interruption.
3 CHECK HARNESS AND CONNECTOR (REAR AIR OUTLET CONTROL SERVO MOTOR - A/C AMPLIFIER)
(a) Disconnect the connector from the A/C amplifier.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance 
REPLACE A/C AMPLIFIER
Rear Air Mix Damper Position Sensor Circuit
DESCRIPTION
This sensor detects the position of the rear air mix control servo motor
(water valve servo motor) and
sends the appropriate signals to the A/C amplifier. The position sensor is bu ...
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, ...
Other materials:
Diagnostic trouble code chart
1. DTCS FOR OCCUPANT CLASSIFICATION SYSTEM
If a trouble code is displayed during the DTC check,
check the circuit listed for the code in the table below
(proceed to the page listed for that circuit).
HINT:
When DTC B1150/23 is detected as a result of
troubleshooting for the airbag system, pe ...
Short to B+ in Rear Curtain Shield Squib RH
Circuit
DTC B1633/82 Short to B+ in Rear Curtain Shield Squib RH
Circuit
DESCRIPTION
The rear curtain shield squib RH circuit consists of the center airbag sensor
assembly and the curtain
shield airbag assembly RH.
The circuit instructs the SRS to deploy when deployment conditions are met.
DTC B ...
Replacement
1. REPLACE GENERATOR DRIVE END FRAME BEARING
(a) Remove the 4 screws and retainer plate from the
drive end frame.
(b) Using SST and a hammer, tap out the drive end
frame bearing from the drive end frame.
SST 09950-60010 (09951-00250), 09950-70010
(09951-07100)
(c) Using SST and a ...
