Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJD8
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 -           ]
Title: POWER DISTRIBUTION: MAIN BODY ECU: INSTALLATION; 2016 - 2020 MY Sienna [12/2015 -        ]

INSTALLATION

PROCEDURE

1. INSTALL MAIN BODY ECU

NOTICE:

Make sure that there is no foreign matter in the engaging part.

(a) Contact the main body ECU guide against the housing side wall.

Text in Illustration

*1

Housing Side Wall

*2

Guide

HINT:

The angle between the junction block and the main body ECU guide should be 20° or more.

(b) While aligning the guide with the housing side wall, slide the main body ECU toward the fuse area of the junction block.

Text in Illustration

*1

Housing Side Wall

*2

Guide

*3

Fuse Area

(c) Slide the main body ECU until it contacts the A surface.

Text in Illustration

*1

A surface

NOTICE:

Slide the ECU gently. Do not apply strong impact to the side of the main body ECU.

(d) Rotate the main body ECU while holding it against the junction block A surface (axis of rotation).

Text in Illustration

*1

A surface

(e) Rotate the main body ECU until it engages with the lock to install it.

NOTICE:

  • When pressing the main body ECU, press the shaded section shown in the illustration.
  • A lock sound will be heard when the main body ECU is engaged.

HINT:

If a lock sound is not heard, visually check the lock engagement. Check that the height of the main body ECU and junction block match.

2. INSTALL INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Connect the connectors on the back side.

(b) Engage the 4 guides and install the junction connector.

(c) Install the instrument panel junction block with the 2 nuts.

Torque:

8.5 N·m {87 kgf·cm, 75 in·lbf}

(d) Connect the connectors on the front side.

3. INSTALL KNEE AIRBAG ASSEMBLY

(See page 2016 - 2020 MY Sienna [12/2015 -        ]; SUPPLEMENTAL RESTRAINT SYSTEMS: KNEE AIRBAG ASSEMBLY: INSTALLATION )