Toyota Tundra Service Manual: Installation

INSTALLATION

CAUTION / NOTICE / HINT

NOTICE:

  • The main body ECU (multiplex network body ECU) is not reusable.
  • Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.

PROCEDURE

1. INSTALL MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NOTICE:

  • Make sure that the connecting surfaces are free of foreign matter.
  • Do not touch the driver side junction block assembly connector or the main body ECU (multiplex network body ECU) connector.

(a) Set a new main body ECU (multiplex network body ECU) to the position where the guide of the main body ECU (multiplex network body ECU) contacts the housing sidewall of the driver side junction block assembly as shown in the illustration.

HINT:

Make sure to keep the angle at 20° or more as shown in the illustration.

*a

Housing Sidewall

*b

20° or more

(b) Slide the main body ECU (multiplex network body ECU) along the housing sidewall as shown in the illustration and attach the guide.

*a

Housing Sidewall

(c) While keeping the main body ECU (multiplex network body ECU) in contact with side A of the driver side junction block assembly (axis of rotation), lower it as shown in the illustration.

NOTICE:

  • Do not force the main body ECU (multiplex network body ECU) into the junction block assembly.
  • Do not forcibly fold the main body ECU (multiplex network body ECU) down.

*a

Side A

(d) Press down on the push area until the claw engages to install the main body ECU (multiplex network body ECU).

NOTICE:

  • Make sure to press only the push area.
  • Confirm the engagement of the main body ECU (multiplex network body ECU) and driver side junction block assembly by listening for the click sound of the lock engaging.
  • Do not hit or put your weight on the main body ECU (multiplex network body ECU) when engaging the main body ECU (multiplex network body ECU).

HINT:

If a click sound cannot be heard, visually check the engagement of the lock. The engagement can also be confirmed if the main body ECU (multiplex network body ECU) and driver side junction block assembly are flush.

*1

Driver Side Junction Block Assembly

*2

Main Body ECU (Multiplex Network Body ECU)

*a

Push Area

(e) Attach the guide to install the wiring harness bracket.

(f) Install the nut.

Torque:

8.0 N·m {82 kgf·cm, 71 in·lbf}

2. INSTALL DRIVER SIDE JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU

(a) Connect the 2 connectors.

NOTICE:

Be sure to connect the connector securely.

(b) Connect the 7 connectors.

NOTICE:

Be sure to connect the connector securely.

(c) Install the driver side junction block assembly with main body ECU with the 2 nuts.

Torque:

8.0 N·m {82 kgf·cm, 71 in·lbf}

3. INSTALL LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY

Click here

    Components

    Removal

    See More:

    Toyota Tundra Service Manual > Tire Pressure Warning System: Terminals Of Ecu
    TERMINALS OF ECU CHECK TIRE PRESSURE WARNING ECU AND RECEIVER (a) Disconnect the P21 tire pressure warning ECU and receiver connector and measure the voltage or resistance on the wire harness side. *a Front view of wire harness connector (to Tire Pressure Warning ECU and Receiver) Terminal No. (Symb ...

    Toyota Tundra Owners Manual

    Toyota Tundra Service Manual

    © 2021 Copyright www.ttundra.com
    0.0183