Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJQ5
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION ECU: REMOVAL; 2016 - 2020 MY Sienna [12/2015 -        ]

REMOVAL

CAUTION / NOTICE / HINT

CAUTION:

Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing (See page 2016 - 2020 MY Sienna [12/2015 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: AIRBAG SYSTEM: PRECAUTION ).

NOTICE:

  • When removing front seat assembly RH, perform zero point calibration and sensitivity check (See page 2016 - 2020 MY Sienna [12/2015 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM: INITIALIZATION ).
  • When replacing the occupant classification ECU, perform zero point calibration and sensitivity check (See page 2016 - 2020 MY Sienna [12/2015 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM: INITIALIZATION ).

PROCEDURE

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See page 2016 MY Sienna [12/2015 - 08/2016]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION 2017 MY Sienna [08/2016 - 11/2017]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION 2018 - 2020 MY Sienna [11/2017 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION ).

2. REMOVE FRONT SEAT ASSEMBLY RH (for Manual Seat)

2016 - 2020 MY Sienna [12/2015 -        ]; SEAT: FRONT SEAT ASSEMBLY(for Manual Seat): REMOVAL+

3. REMOVE FRONT SEAT ASSEMBLY RH (for Power Seat)

2016 - 2020 MY Sienna [12/2015 -        ]; SEAT: FRONT SEAT ASSEMBLY(for Power Seat): REMOVAL+

4. REMOVE OCCUPANT CLASSIFICATION ECU

(a) Disconnect the 2 connectors.

(b) Using a screwdriver with the tip wrapped with protective tape, disengage the claw and remove the occupant classification ECU.

Text in Illustration

*1

Protective Tape