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Home >> Toyota >> 2020 >> RAV4 LE, AWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Main Body Ecu - Service Information >> Main Body Ecu >> Installation [11/2018 - 08/2020] >> Procedure

Installation [11/2018 - 08/2020]: Procedure

  1. INSTALL MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    1. Hold the main body ECU (multiplex network body ECU) with your dominant hand.
      GTY912702Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Do not touch the connector.
      • Make sure foreign matter does not enter the terminals.
      GTY863191Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Connector
    2. Hold the instrument panel junction block assembly with your other hand.
      GTY862355Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Fitting Surface
      NOTE:

      Make sure there is no foreign matter in the fitting surface.

    3. Set the guide of the main body ECU (multiplex network body ECU) against the housing sidewall.

      HINT: 

      Make sure the angle between the instrument panel junction block assembly and the main body ECU (multiplex network body ECU) is 20° or more.

      GTY866760Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 20° or more
      Install in this Direction
      Housing Sidewall
    4. Slide the guide of the main body ECU (multiplex network body ECU) along the housing sidewall in the direction indicated by the arrow.
      GTY933621Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Install in this Direction
      Housing Sidewall
    5. Slide it until it contacts side A.
      GTY876189Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Install in this Direction
      Side A
    6. Contact side A.
      NOTE:

      Do not contact side A with the main body ECU (multiplex network body ECU) too hard.

      GTY935465Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Install in this Direction
    7. While pressing the main body ECU (multiplex network body ECU) against side A (center of rotation) of the instrument panel junction block assembly, rotate it until it enters the lock of the instrument panel junction block assembly.

      HINT: 

      The center of rotation is the one that contacts surface A.

      GTY891020Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Center of Rotation (Contacts Surface A)
      Rotate in this Direction
      GTY913874Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Center of Rotation (Contacts Surface A)
      Rotate in this Direction
    8. Rotate it until it enters the lock of the instrument panel junction block assembly.
      GTY920064Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Before Locking *b Main Body ECU (Multiplex Network Body ECU) Lock
      *c Instrument Panel Junction Block Assembly Lock - -
    9. Press the pressing area of the main body ECU (multiplex network body ECU).
      GTY924956Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Install in this Direction
      Pressing Area
      NOTE:
      • Press it in one of the following ways.
        GTY927038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Press the 2 sides of the main body ECU (multiplex network body ECU) with both hands. *b Press the center of the main body ECU (multiplex network body ECU) with one hand.
        Place fingers or the palm of your hand here - -
      • Do not hit on or put your weight on the main body ECU (multiplex network body ECU) when engaging the main body ECU (multiplex network body ECU).
      • Check the engagement of the main body ECU (multiplex network body ECU) and the instrument panel junction block assembly by the locking sound.
    10. Check that the back side of the main body ECU (multiplex network body ECU) and the rib surrounding the instrument panel junction block assembly are the same height.
      GTY848340Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Back Side of Main Body ECU (Multiplex Network Body ECU)
      *b Rib Surrounding Instrument Panel Junction Block Assembly
      GTY853054Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a After Locking (Height Matches) *b Back Side of Main Body ECU (Multiplex Network Body ECU)
      *c Rib Surrounding Instrument Panel Junction Block Assembly - -
      Confirm Visually - -
    11. Attach the claw to install the junction block bracket to the instrument panel junction block assembly.
      GTY923272Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSTALL INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU 
    1. Attach the wire harness clamp.
      GTY932208Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lever Connector - -
      Rotate in this Direction - -
    2. Attach the claw to connect the 2 lever connectors.
      NOTE:

      Be sure to connect the connector securely.

    3. Attach the claw to install the instrument panel junction block assembly with main body ECU to the connector holder.
      GTY923273Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Attach the claw to install the instrument panel junction block assembly with main body ECU with the 2 nuts.

      Torque: 8.0 N.m (82 kgf/cm, 71 in.lbf) 

      GTY923267Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Connect the 5 connectors.
      GTY944951Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Connect the 2 connectors.
      GTY865392Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lever Connector
      Rotate in this Direction
    7. Attach the wire harness clamp.
    8. Attach the claw to connect the 2 lever connectors.
      NOTE:

      Be sure to connect the connector securely.

    9. w/ Clearance Warning System:
      GTY848504Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a w/ Clearance Warning System
      1. Connect the 5 connectors.
    10. w/o Clearance Warning System:
      1. Connect the 4 connectors.
    11. Attach the 2 wire harness clamps.
  3. INSTALL NO. 3 INSTRUMENT PANEL TO COWL BRACE SUB-ASSEMBLY (for TMC Made) 
    1. Install the No. 3 instrument panel to cowl brace sub-assembly with the nut and bolt.
      GTY919598Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Nut
      Bolt

      Nut 

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

      Bolt 

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

    2. Attach the 2 wire harness clamps.
      GTY923264Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. INSTALL CENTER INSTRUMENT PANEL BRACKET SUB-ASSEMBLY (for TMMC Made) 

    HINT: 

    Use the same procedure described as for the No. 3 instrument panel to cowl brace sub-assembly (for TMC Made).

  5. INSTALL LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY 

    Refer to INSTALLATION [11/2018 - 08/2020]

  6. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL 
    NOTE:

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

    Refer to INITIALIZATION [11/2018 - 02/2019] , or refer to INITIALIZATION [02/2019 - 10/2019] , or refer to INITIALIZATION [10/2019 - 06/2020] , or refer to INITIALIZATION [06/2020 - 08/2020]

  7. INSTALL BATTERY HOLE COVER (for HV Model) 

    Refer to PROCEDURE - Step 3

  8. INSTALL REAR NO. 2 FLOOR BOARD (for HV Model) 

    Refer to PROCEDURE - Step 4

  9. INSTALL DECK BOARD ASSEMBLY (for HV Model) 

    Refer to PROCEDURE - Step 5

  10. PERFORM DIAGNOSTIC SYSTEM CHECK 
  11. CHECK SRS WARNING LIGHT 
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