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Check Bus 3 Line for Short to +B [10/2015 - ]: Procedure

  1. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 8 CAN JUNCTION CONNECTOR) 
    1. Disconnect the cable from the negative (-)auxiliary battery terminal.
    2. Disconnect the D133 No. 8 CAN junction connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY608356Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 DLC3 - -
      *a Front view of wire harness connector
      (to No. 8 CAN Junction Connector)      		 *b to Central Gateway ECU (CA3H and CA3L terminal)
      *c to Central Gateway ECU (CAYH and CAYL Terminal) *d to Navigation ECU Sub-assembly
      (for Navigation Receiver Type)
      *e to Radio and Display Receiver Assembly
      (for Radio and Display Type)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition Connected to
      D133-9 (CANH) - D28-16 (BAT) Cable disconnected from negative (-)auxiliary battery terminal 6 kΩ or higher Central gateway ECU (CA3H and CA3L terminal)
      D133-20 (CANL) - D28-16 (BAT)
      D133-10 (CANH) - D28-16 (BAT) Cable disconnected from negative (-)auxiliary battery terminal 6 kΩ or higher Central gateway ECU (CAYH and CAYL terminal)
      D133-21 (CANL) - D28-16 (BAT)
      D133-11 (CANH) - D28-16 (BAT) Cable disconnected from negative (-)auxiliary battery terminal 6 kΩ or higher Navigation ECU Sub-assembly*1
      D133-22 (CANL) - D28-16 (BAT)
      D133-11 (CANH) - D28-16 (BAT) Cable disconnected from negative (-)auxiliary battery terminal 6 kΩ or higher Radio and display receiver assembly*2
      D133-22 (CANL) - D28-16 (BAT)
      • *1: for Navigation Receiver Type
      • *2: for Radio and Display Type

      Result

      Result Proceed to
      OK A
      NG (Central gateway ECU (CA3H and CA3L terminal) main line) B
      NG (Central gateway ECU (CAYH and CAYL terminal) main line) C
      NG (ECU or sensor branch line) D

    Result: 

    A 

    REPLACE NO. 8 CAN JUNCTION CONNECTOR 

    Result: 

    C 

    See step  3

    Result: 

    D 

    See step  4

    Result: 

    B 

    See step  2

  2. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 8 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU) 
    1. Reconnect the D133 No. 8 CAN junction connector.
    2. Disconnect the D129 central gateway ECU connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY599297Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D129-6 (CA3H) - D129-1 (BATT) Cable disconnected from negative (-)auxiliary battery terminal 6 kΩ or higher
      D129-21 (CA3L) - D129-1 (BATT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU) 

  3. CHECK FOR SHORT TO +B IN CAN BUS LINE (NO. 8 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU) 
    1. Reconnect the D133 No. 8 CAN junction connector.
    2. Disconnect the D129 central gateway ECU connector.
    3. Measure the resistance according to the value(s) in the table below.
      GTY599295Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Front view of wire harness connector
      (to Central Gateway ECU)

      Standard Resistance

      Tester Connection Condition Specified Condition
      D129-19 (CAYH) - D129-1 (BATT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      D129-20 (CAYL) - D129-1 (BATT)

      Result

      Result
      OK
      NG

    Result: 

    OK 

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

    Result: 

    NG 

    REPAIR OR REPLACE CAN MAIN BUS LINE OR CONNECTOR (NO. 8 CAN JUNCTION CONNECTOR - CENTRAL GATEWAY ECU) 

  4. CHECK FOR SHORT TO +B IN CAN BUS LINE (ECU, SENSOR) 
    1. Reconnect the D133 No. 8 CAN junction connector.
    2. Disconnect the ECU or sensor connected to the CAN bus line that is shorted to +B.

      HINT: 

      If the ECU or sensor has multiple connectors, disconnect the connector that includes the CAN bus lines. To determine the ECU or sensor that is connected to the shorted bus line, refer to Terminals of ECU.

      Refer to TERMINALS OF ECU [10/2015 - ]

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      D129-6 (CA3H) - D129-1 (BATT) Cable disconnected from negative (-) auxiliary battery terminal 6 kΩ or higher
      D129-21 (CA3L) - D129-1 (BATT)

      HINT: 

      If the resistance changes to 6 kΩ or higher when the connector is disconnected from the ECU or sensor, there may be a short in the ECU or sensor.

      GTY572037Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Component with harness connected
      (Central Gateway ECU)

      Result

      Result
      OK
      NG

    Result: 

    OK 

    REPLACE CORRESPONDING ECU OR SENSOR 

    Result: 

    NG 

    REPAIR OR REPLACE CORRESPONDING ECU OR SENSOR BUS LINE OR CONNECTOR 

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