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Open in Bus 2 Main Bus Line [10/2015 - 09/2018]: Procedure

  1. CHECK FOR OPEN IN CAN BUS WIRE (ECM - NO. 1 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-) battery terminal.
      GTY616358Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to ECM)
    2. Disconnect the ECM connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      A78-13 (CANH) - A78-26 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE ECM 

    for 2GR-FKS

    Refer to REMOVAL [10/2015 - ]

    for 8AR-FTS

    Refer to REMOVAL [10/2015 - ]

    Result: 

    NG 

    See step  2

  2. CONNECT CONNECTOR 
    1. Reconnect the A78 ECM connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK FOR OPEN IN CAN BUS WIRE (COMBINATION METER ASSEMBLY - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the combination meter assembly connector.
      GTY532973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear 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
      N40-29 (CANH) - N40-30 (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 [09/2014 - ] 

    Result: 

    NG 

    See step  4

  4. CONNECT CONNECTOR 
    1. Reconnect the N40 combination meter assembly connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  5

  5. CHECK FOR OPEN IN CAN BUS WIRE (CENTRAL GATEWAY ECU - NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the central gateway ECU connector.
      GTY676809Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      N165-18 (CA4H) - N165-17 (CA4L) Cable disconnected from negative (-) battery terminal 54 to 69 Ω

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE CENTRAL GATEWAY ECU. Refer to  REMOVAL [09/2014 - ] 

    Result: 

    NG 

    See step  6

  6. CONNECT CONNECTOR 
    1. Reconnect the N165 central gateway ECU connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. CHECK FOR OPEN IN CAN BUS WIRE (NO. 1 CAN JUNCTION CONNECTOR) 
    1. Disconnect the No. 1 CAN junction connector.
      GTY642256Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to No. 1 CAN Junction Connector)
      *b to No. 2 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 Connect to
      U69-5 (CANH) - U69-16 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 2 CAN junction connector
      U69-6 (CANH) - U69-17 (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. 2 CAN junction connector CAN main wire) C

    Result: 

    A 

    REPLACE NO. 1 CAN JUNCTION CONNECTOR 

    Result: 

    B 

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

    Result: 

    C 

    See step  8

  8. CONNECT CONNECTOR 
    1. Reconnect the U69 No. 1 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  9

  9. CHECK FOR OPEN IN CAN BUS WIRE (NO. 2 CAN JUNCTION CONNECTOR) 
    1. Disconnect the No. 2 CAN junction connector.
      GTY642253Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to No. 2 CAN Junction Connector)
      *b to No. 3 CAN Junction Connector
      *c to No. 1 CAN Junction Connector
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connect to
      N169-1 (CANH) - N169-12 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 3 CAN junction connector
      N169-6 (CANH) - N169-17 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 1 CAN junction connector

      Result

      Result Proceed to
      OK A
      NG (No. 1 CAN junction connector CAN main wire) B
      NG (No. 3 CAN junction connector CAN main wire) C

    Result: 

    A 

    REPLACE NO. 2 CAN JUNCTION CONNECTOR 

    Result: 

    B 

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

    Result: 

    C 

    See step  10

  10. CONNECT CONNECTOR 
    1. Reconnect the N169 No. 2 CAN junction connector.

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  11

  11. CHECK FOR OPEN IN CAN BUS WIRE (NO. 3 CAN JUNCTION CONNECTOR) 
    1. Disconnect the No. 3 CAN junction connector.
      GTY642254Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Rear view of wire harness connector
      (to No. 3 CAN Junction Connector)
      *b to Central Gateway ECU
      *c to No. 2 CAN Junction Connector
      *d to Combination Meter Assembly
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition Connect to
      N168-3 (CANH) - N168-14 (CANL) Cable disconnected from negative (-) battery terminal 200 Ω or higher Central gateway ECU
      N168-8 (CANH) - N168-19 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω No. 2 CAN junction connector
      N168-10 (CANH) - N168-21 (CANL) Cable disconnected from negative (-) battery terminal 108 to 132 Ω Combination meter assembly

      Result

      Result Proceed to
      OK A
      NG (No. 2 CAN junction connector CAN main wire) B
      NG (Combination meter assembly CAN main wire) C
      NG (Central gateway ECU CAN branch wire) D

    Result: 

    A 

    REPLACE NO. 3 CAN JUNCTION CONNECTOR 

    Result: 

    B 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - NO. 2 CAN JUNCTION CONNECTOR) 

    Result: 

    C 

    REPAIR OR REPLACE CAN MAIN WIRE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY) 

    Result: 

    D 

    REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (NO. 3 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU) 

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