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Home >> Toyota >> 2024 >> Corolla LE >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 45 (Can Communication System (HEV) - Circuit Tests (3 Of 6)) >> CAN COMMUNICATION SYSTEM (for HV Model) >> Open in Bus 3 Main Bus Line [01/2019 - 09/2022] >> Procedure

Open in Bus 3 Main Bus Line [01/2019 - 09/2022]: Procedure

WARNING: This page is about a different variant/trim than selected.
  1. CHECK FOR OPEN IN CAN MAIN BUS LINES (NO. 6 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Disconnect the I132 No. 6 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY883520Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 6 CAN Junction Connector)
      *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      I132-1 (CANH) - I132-12 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      I132-2 (CANH) - I132-13 (CANL) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE NO. 6 CAN JUNCTION CONNECTOR 

    Result: 

    NG 

    See step  2

  2. CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 6 CAN JUNCTION CONNECTOR) 
    1. Reconnect the I132 No. 6 CAN junction connector.
    2. Disconnect the I53 central gateway ECU (network gateway ECU) connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY929441Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central gateway ECU (network gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I53-6 (CA3H) - I53-19 (CAYH) Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω
      I53-21 (CA3L) - I53-20 (CAYL) Cable disconnected from negative (-) auxiliary battery terminal Below 1 Ω

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [06/2018 - 09/2022]

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) - NO. 6 CAN JUNCTION CONNECTOR)