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Check Bus 7 Line [11/2022 - ]: Procedure

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  1. CHECK FOR OPEN IN CAN MAIN BUS LINES 
    1. Disconnect the cable from the negative (-) auxiliary battery terminal.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1109447Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I231-5 (CA8H) - I231-6 (CA8L) Cable disconnected from negative (-) auxiliary battery terminal Below 70 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  11

    Result: 

    OK 

    See step  2

  2. CHECK FOR SHORT IN CAN BUS LINES 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1109447Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I231-5 (CA8H) - I231-6 (CA8L) Cable disconnected from negative (-) auxiliary battery terminal 54 Ω or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  9

    Result: 

    OK 

    See step  3

  3. CHECK FOR SHORT TO +B IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1114684Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      I231-5 (CA8H) - I26-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I231-6 (CA8L) - I26-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  7

    Result: 

    OK 

    See step  4

  4. CHECK FOR SHORT TO GND IN CAN BUS LINE 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1114680Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Component with harness connected
      (Central Gateway ECU (Network Gateway ECU))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      I231-5 (CA8H) - I26-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I231-6 (CA8L) - I26-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    See step  5

  5. CHECK FOR SHORT TO GND IN CAN BUS LINE (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1117699Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))      		 *b to Option Connector (Bus Buffer ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      I231-5 (CA8H) - I26-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I231-6 (CA8L) - I26-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    See step  6

  6. CHECK FOR SHORT TO GND IN CAN BUS LINE (OPTION CONNECTOR (BUS BUFFER ECU)) 
    1. Disconnect the option connector (bus buffer ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to Option Connector (Bus Buffer ECU))      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      I259-2 (CAN+) - I26-4 (CG) Cable disconnected from negative (-) auxiliary battery terminal 200 Ω or higher
      I259-1 (CAN-) - I26-4 (CG)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE CAN COMPATIBLE OPTIONAL DEVICES 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (OPTION CONNECTOR (BUS BUFFER ECU) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  7. CHECK FOR SHORT TO +B IN CAN BUS LINE (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1117698Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))      		 *b to Option Connector (Bus Buffer ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      I231-5 (CA8H) - I26-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I231-6 (CA8L) - I26-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    See step  8

  8. CHECK FOR SHORT TO +B IN CAN BUS LINE (OPTION CONNECTOR (BUS BUFFER ECU)) 
    1. Disconnect the option connector (bus buffer ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115545Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to Option Connector (Bus Buffer ECU))      		 *b to Central Gateway ECU (Network Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      I259-2 (CAN+) - I26-16 (BAT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      I259-1 (CAN-) - I26-16 (BAT)

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE CAN COMPATIBLE OPTIONAL DEVICES 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (OPTION CONNECTOR (BUS BUFFER ECU) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  9. CHECK FOR SHORT IN CAN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I231-5 (CA8H) - I231-6 (CA8L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      GTY1115354Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU (Network Gateway ECU))

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    See step  10

  10. CHECK FOR SHORT IN CAN BUS LINES (OPTION CONNECTOR (BUS BUFFER ECU)) 
    1. Reconnect the I231 central gateway ECU (network gateway ECU) connector.
    2. Disconnect the option connector (bus buffer ECU) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      I259-2 (CAN+) - I259-1 (CAN-) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω
      GTY1118781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Option Connector (Bus Buffer ECU))

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE CAN COMPATIBLE OPTIONAL DEVICES 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (OPTION CONNECTOR (BUS BUFFER ECU) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

  11. CHECK FOR OPEN IN CAN MAIN BUS LINES (CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 
    1. Disconnect the central gateway ECU (network gateway ECU) connector.
    2. Measure the resistance according to the value(s) in the table below.
      GTY1115354Courtesy 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
      I231-5 (CA8H) - I231-6 (CA8L) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    See step  12

  12. CHECK FOR OPEN IN CAN MAIN BUS LINES (OPTION CONNECTOR (BUS BUFFER ECU)) 
    1. Reconnect the I231 central gateway ECU (network gateway ECU) connector.
    2. Disconnect the option connector (bus buffer ECU) connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY1118781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Option Connector (Bus Buffer ECU))

      Standard Resistance

      Tester Connection Condition Specified Condition
      I259-2 (CAN+) - I259-1 (CAN-) Cable disconnected from negative (-) auxiliary battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPAIR OR REPLACE CAN COMPATIBLE OPTIONAL DEVICES 

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (OPTION CONNECTOR (BUS BUFFER ECU) - CENTRAL GATEWAY ECU (NETWORK GATEWAY ECU)) 

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