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Open in Bus 2 Main Bus Line [09/2017 - 05/2019]: Procedure

  1. CHECK FOR OPEN IN CAN BUS WIRE (CENTRAL GATEWAY ECU [NETWORK GATEWAY ECU] - NO. 1 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the central gateway ECU (network gateway ECU) connector.
      GTY797540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU [Network Gateway ECU])
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I164-18 (CA4H) - I164-17 (CA4L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (CENTRAL GATEWAY ECU [NETWORK GATEWAY ECU] - NO. 1 CAN JUNCTION CONNECTOR) 

    Result: 

    OK 

    See step  2

  2. CONNECT CONNECTOR 
    1. Connect the I164 central gateway ECU (network gateway ECU) connector.

      Result

      Proceed to
      Next

    Result: 

    Next 

    See step  3

  3. CHECK FOR OPEN IN CAN BUS WIRE (NO. 1 CAN JUNCTION CONNECTOR) 
    1. Disconnect the No. 1 CAN junction connector.
      GTY831544Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 1 CAN Junction Connector)
      *b to No. 2 CAN Junction Connector
      *c to Combination Meter Assembly
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      I93-5 (CANH) - I93-15 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 2 CAN junction connector
      I93-7 (CANH) - I93-17 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Combination meter assembly

      Result

      Result Proceed to
      OK A
      NG (Combination meter assembly CAN main wire) B
      NG (No. 2 Can junction connector main wire) C

    Result: 

    A 

    REPLACE NO. 1 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  6

    Result: 

    B 

    See step  4

  4. CONNECT CONNECTOR 
    1. Connect the I93 No. 1 CAN junction connector.

      Result

      Proceed to
      Next

    Result: 

    Next 

    See step  5

  5. CHECK FOR OPEN IN CAN BUS WIRE (COMBINATION METER ASSEMBLY - NO. 1 CAN JUNCTION CONNECTOR) 
    1. Disconnect the combination meter assembly connector.
      GTY806749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Combination Meter Assembly)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I10-29 (CANH) - I10-30 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [09/2017 - ] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (COMBINATION METER ASSEMBLY - NO. 1 CAN JUNCTION CONNECTOR) 

  6. CONNECT CONNECTOR 
    1. Connect the I93 No. 1 CAN junction connector.

      Result

      Proceed to
      Next

    Result: 

    Next 

    See step  7

  7. CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 CAN JUNCTION CONNECTOR) 
    1. Disconnect the No. 2 CAN junction connector.
      GTY794639Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 2 CAN Junction Connector)
      *b to No. 1 CAN Junction Connector
      *c to ECM
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      I94-6 (CANH) - I94-16 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 1 CAN junction connector
      I94-7 (CANH) - I94-17 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω ECM

      Result

      Result Proceed to
      OK A
      NG (ECM CAN main wire) B
      NG (No. 1 Can junction connector main wire) C

    Result: 

    A 

    REPLACE NO. 2 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 2 CAN JUNCTION CONNECTOR - NO. 1 CAN JUNCTION CONNECTOR) 

    Result: 

    B 

    See step  8

  8. CONNECT CONNECTOR 
    1. Connect the I94 No. 2 CAN junction connector.

      Result

      Proceed to
      Next

    Result: 

    Next 

    See step  9

  9. CHECK FOR OPEN IN CAN BUS WIRE (ECM - NO. 2 CAN JUNCTION CONNECTOR) 
    1. Disconnect the ECM connector.
      GTY828125Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A35-13 (CANH) - A35-26 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM. Refer to  REMOVAL [10/2014 - 05/2019] 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (ECM - NO. 2 CAN JUNCTION CONNECTOR) 

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