Toyota Avalon (XX50): Seat Position Sensor

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Supplemental Restraint Systems / Seat Position Sensor

Components

COMPONENTS

ILLUSTRATION

*A

w/ Seat Position Memory System

-

-

*1

POSITION CONTROL ECU ASSEMBLY

*2

SEAT POSITION AIRBAG SENSOR

*3

SEAT SLIDE POSITION SENSOR PROTECTOR

-

-

N*m (kgf*cm, ft.*lbf): Specified torque

-

-

Installation

INSTALLATION

PROCEDURE

1. INSTALL SEAT POSITION AIRBAG SENSOR

(a) Engage the pin to install the seat position airbag sensor to the seat slide position sensor protector as shown in the illustration.

Install in this Direction

(b) Using a 1.3 mm (0.0512 in.) feeler gauge, temporarily install the seat position airbag sensor with the "TORX" bolt.

NOTICE:

  • If the seat position airbag sensor has been dropped, or there are any cracks, dents or other defects in the case or connector, replace the seat position airbag sensor with a new one.
  • When installing the seat position airbag sensor, make sure that the SRS wiring does not interfere with or is pinched between other parts.

*1

Seat Position Airbag Sensor

*a

Feeler Gauge

*b

1.3 mm (0.0512 in.)

*c

Seat Rail

(c) Using a T30 "TORX" socket wrench, tighten the "TORX" bolt.

Torque:

8.0 N·m {82 kgf·cm, 71 in·lbf}

(d) Make sure that the clearance between the seat position airbag sensor and seat rail is 1.3 mm (0.0512 in.).

(e) Connect the connector and engage the clamp.

(f) Check that there is no looseness in the installed parts of the seat position airbag sensor.

2. INSTALL POSITION CONTROL ECU ASSEMBLY (w/ Seat Position Memory System)

Click here

3. INSTALL FRONT SEAT ASSEMBLY LH

Click here

4. PERFORM DIAGNOSTIC SYSTEM CHECK

for Gasoline Model: Click here

for HV Model: Click here

On-vehicle Inspection

ON-VEHICLE INSPECTION

CAUTION / NOTICE / HINT

CAUTION:

Be sure to correctly follow the removal and installation procedures for the seat position airbag sensor.

PROCEDURE

1. INSPECT SEAT POSITION AIRBAG SENSOR (for Vehicle not Involved in Collision)

(a) Perform a diagnostic system check.

for Gasoline Model: Click here

for HV Model: Click here

2. INSPECT SEAT POSITION AIRBAG SENSOR (for Vehicle Involved in Collision)

(a) Perform a diagnostic system check.

for Gasoline Model: Click here

for HV Model: Click here

(b) Visually check for defects with the seat position airbag sensor removed from the vehicle.

HINT:

The defects are as follows:

  • Cracks in the sensor housing
  • Dents in the sensor housing
  • Chips in the sensor housing
  • Cracks or other damage to the connector

OK:

No defects are found.

If any defects are found, replace the seat position airbag sensor with a new one.

Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during seat position airbag sensor removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced (for Gasoline Model)

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*: When performing learning using the Techstream.

Click here

Disconnect cable from negative auxiliary battery terminal

Perform steering sensor zero point calibration

Lane Departure Alert System (w/ Steering Control)

Pre-collision System

Intelligent Clearance Sonar System*

Lighting System (for Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

Panoramic View Monitor System

Necessary Procedures After Parts Removed/Installed/Replaced (for HV Model)

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

*: When performing learning using the Techstream.

Click here

Disconnect cable from negative auxiliary battery terminal

Perform steering sensor zero point calibration

Lane Departure Alert System (w/ Steering Control)

Pre-collision System

Intelligent Clearance Sonar System*

Lighting System (for HV Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

Panoramic View Monitor System

PROCEDURE

1. REMOVE FRONT SEAT ASSEMBLY LH

Click here

2. REMOVE POSITION CONTROL ECU ASSEMBLY (w/ Seat Position Memory System)

Click here

3. REMOVE SEAT POSITION AIRBAG SENSOR

(a) Disengage the clamp and disconnect the connector.

(b) Using a T30 "TORX" socket wrench, remove the "TORX" bolt and seat position airbag sensor with the seat slide position sensor protector.

(c) Disengage the pin to remove the seat position airbag sensor from the seat slide position sensor protector as shown in the illustration.

Remove in this Direction

Rear Seat Side Airbag Assembly

Side Airbag Sensor(for Center Pillar)

See More:

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Can Communication System(for Gasoline Model): Check Bus 4 Line for Short to +B
DESCRIPTION There may be a short circuit between one of the CAN bus lines and +B when there is no resistance between terminal 22 (CA2H) of the central gateway ECU (network gateway ECU) and terminal 16 (BAT) of the DLC3, or terminal 7 (CA2L) of the central gateway ECU (network gateway ECU) and termin ...

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

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