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Home >> Toyota >> 2016 >> Avalon XLE >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (W/ Central Gateway Ecu) - Diagnostic Codes - Circuit & Symptom Tests - (Except Hybrid) >> CAN COMMUNICATION SYSTEM (w/ Central Gateway ECU) >> Symptom Tests >> Open in Bus 3 Main Bus Line [10/2015 - ] >> Procedure

Open in Bus 3 Main Bus Line [10/2015 - ]: Procedure

  1. CHECK FOR OPEN IN CAN BUS LINES (NO. 7 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
    2. Disconnect the D132 No. 7 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY539011Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to No. 7 CAN Junction Connector)
      *b to Central Gateway ECU (CA3H and CA3L Terminal)
      *c to Central Gateway ECU (CAYH and CAYL Terminal)

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      D132-9 (CANH) - D132-20 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Central gateway ECU (CA3H and CA3L terminal)
      D132-10 (CANH) - D132-21 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Central gateway ECU (CAYH and CAYL terminal)
        Proceed to
      OK A
      NG (Central gateway ECU (CA3H and CA3L terminal) main lines) B
      NG (Central gateway ECU (CAYH and CAYL terminal) main lines) C

    Result: 

    A 

    REPLACE NO. 7 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  3

    Result: 

    B 

    See step  2

  2. CHECK FOR OPEN IN CAN BUS LINES (CENTRAL GATEWAY ECU) 
    1. Remove the central gateway ECU.

      Refer to REMOVAL [10/2015 - ]

    2. Measure the resistance according to the value(s) in the table below.
      GTY560214Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Central Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D127-6 (CA3H) - D127-21 (CA3L) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

    Result: 

    OK 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU) 

    Result: 

    NG 

    REPLACE CENTRAL GATEWAY ECU. Refer to  REMOVAL [10/2015 - ] 

  3. CHECK FOR OPEN IN CAN BUS LINES (CENTRAL GATEWAY ECU) 
    1. Remove the central gateway ECU.

      Refer to REMOVAL [10/2015 - ]

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      D127-19 (CAYH) - D127-20 (CAYL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω
      GTY602323Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component without harness connected
      (Central Gateway ECU)

    Result: 

    OK 

    REPAIR OR REPLACE CAN MAIN BUS LINES OR CONNECTOR (NO. 7 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU) 

    Result: 

    NG 

    REPLACE CENTRAL GATEWAY ECU. Refer to  REMOVAL [10/2015 - ] 

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