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Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Main Body Ecu (Service Information) >> Main Body Ecu >> Removal [08/2019 - ] >> Procedure

Removal [08/2019 - ]: Procedure

  1. REMOVE LOWER NO. 1 INSTRUMENT PANEL AIRBAG ASSEMBLY 

    Refer to REMOVAL [08/2019 - ]

  2. REMOVE DRIVER SIDE JUNCTION BLOCK ASSEMBLY WITH MAIN BODY ECU 
    1. Remove the 2 nuts and disconnect the driver side junction block assembly with main body ECU.
      GTY753382Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 7 connectors.
      GTY753383Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Disconnect the 2 connectors and remove the driver side junction block assembly with main body ECU.
      GTY753384Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REMOVE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    1. Remove the nut.
      GTY771349Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Detach the guide and remove the wiring harness bracket.
    3. Press the claw of the driver side junction block assembly as shown in the illustration to release the lock.
      GTY755440Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Driver Side Junction Block Assembly
      *2 Main Body ECU (Multiplex Network Body ECU)
    4. With the driver side junction block assembly lock released, insert a screwdriver with its tip wrapped with protective tape horizontally between the main body ECU (multiplex network body ECU) and driver side junction block assembly.
      GTY760678Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protective Tape
      NOTE:
      • Use a screwdriver with a diameter between 5.0 mm (0.197 in.) and 6.3 mm (0.248 in.) and a length of approximately 90 mm (3.54 in.).
      • Do not insert the screwdriver under the connector socket of the driver side junction block assembly or the main body ECU (multiplex network body ECU).
    5. Using a screwdriver, carefully raise the main body ECU (multiplex network body ECU) to the position where the connector becomes disconnected.
      NOTE:
      • Do not twist the screwdriver to raise the main body ECU (multiplex network body ECU).
      • Replace the driver side junction block assembly or the main body ECU (multiplex network body ECU) when the connector terminal, locking section or case is damaged or deformed.
    6. Raise the main body ECU (multiplex network body ECU) as shown by the arrow (1), and then pull it out as shown by the arrow (2) in the illustration.
      GTY759103Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Place Hand Here
      Arrow (1)
      Arrow (2)
      NOTE:
      • Do not touch the driver side junction block assembly connector or the main body ECU (multiplex network body ECU) connector.
      • When removing the driver side junction block assembly or the main body ECU (multiplex network body ECU), take care not to damage it.
      • Do not use the driver side junction block assembly or the main body ECU (multiplex network body ECU) that has been dropped or subjected to a strong shock.