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Home >> Toyota >> 2011 >> Highlander Hybrid Limited >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (W/O Smart Key) (Diagnostic Codes & Circuit Tests) (Hybrid) >> CAN COMMUNICATION SYSTEM (w/o Smart Key System) >> Open in One Side of CAN Branch Line >> Procedure

Open in One Side of CAN Branch Line: Procedure

  1. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU ASSEMBLY) 
    1. Disconnect the A44 skid control ECU assembly connector.
    2. Select "Bus Check" on the Techstream, refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      "ABS/VSC/TRAC" is not displayed on the Techstream A
      Several ECUs and sensors in addition to "ABS/VSC/TRAC" are displayed on the Techstream B

    B → See step   3 

    A: Go to next step 

  2. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (SKID CONTROL ECU ASSEMBLY CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 1: Disconnecting A44 Skid Control ECU Assembly Connector
      GTY305328Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A44-8 (CA1H) - A44-9 (CA1L) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Skid Control ECU Assembly)

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (SKID CONTROL ECU ASSEMBLY) 

    OK → See step   20 

  3. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (STEERING ANGLE SENSOR) 
    1. Disconnect the D14 steering angle sensor connector.
    2. Select "Bus Check" on the Techstream, refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      "Steering Angle Sensor" is not displayed on the Techstream A
      Several ECUs and sensors in addition to "Steering Angle Sensor" are displayed on the Techstream B

    B → See step   5 

    A: Go to next step 

  4. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (STEERING ANGLE SENSOR CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 2: Disconnecting D14 Steering Angle Sensor Connector
      GTY303864Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D14-3 (CANH) - D14-2 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Steering Angle Sensor)

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (STEERING ANGLE SENSOR) 

    OK → See step   21 

  5. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (YAW RATE SENSOR ASSEMBLY) 
    1. Disconnect the O6 yaw rate sensor assembly connector.
    2. Select "Bus Check" on the Techstream, refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      "Yaw Rate / Deceleration Sensor" is not displayed on the Techstream A
      Several ECUs and sensors in addition to "Yaw Rate / Deceleration Sensor" are displayed on the Techstream B

    B → See step   7 

    A: Go to next step 

  6. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (YAW RATE SENSOR ASSEMBLY CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 3: Disconnecting O6 Yaw Rate Sensor Assembly Connector
      GTY298598Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      O6-3 (CANH) - O6-2 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Yaw Rate Sensor Assembly)

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (YAW RATE SENSOR ASSEMBLY) 

    OK → See step   22 

  7. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (NAVIGATION RECEIVER ASSEMBLY) 
    NOTE:

    For vehicles without a navigation system, go to "Check for Open in One Side of CAN Branch Wire (Center Airbag Sensor Assembly)".

    1. Disconnect the E25 navigation receiver assembly connector.
    2. Select "Bus Check" on the Techstream, refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      "AVN1" is not displayed on the Techstream A
      Several ECUs and sensors in addition to "AVN1" are displayed on the Techstream B

    B → See step   9 

    A: Go to next step 

  8. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (NAVIGATION RECEIVER ASSEMBLY CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 4: Disconnecting E25 Navigation Receiver Assembly Connector
      GTY296188Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      E25-2 (CANH) - E25-3 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Navigation Receiver Assembly)

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (NAVIGATION RECEIVER ASSEMBLY) 

    OK → See step   23 

  9. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (CENTER AIRBAG SENSOR ASSEMBLY) 
    1. Disconnect the D30 center airbag sensor assembly connector.
    2. Select "Bus Check" on the Techstream, refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      "SRS Airbag" is not displayed on the Techstream A
      Several ECUs and sensors in addition to "SRS Airbag" are displayed on the Techstream B

    B → See step   11 

    A: Go to next step 

  10. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (CENTER AIRBAG SENSOR ASSEMBLY CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 5: Identifying O6 Center Airbag Sensor Assembly
      GTY301663Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D30-13 (CANH) - D30-22 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Center Airbag Sensor Assembly)

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (CENTER AIRBAG SENSOR ASSEMBLY) 

    OK → See step   24 

  11. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (MAIN BODY ECU) 
    1. Disconnect the D9 main body ECU (instrument panel junction block assembly) connector.
    2. Select "Bus Check" on the Techstream, refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      "Main Body" is not displayed on the Techstream A
      Several ECUs and sensors in addition to "Main Body" are displayed on the Techstream B

    B → See step   13 

    A: Go to next step 

  12. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (MAIN BODY ECU CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 6: Disconnecting D9 Main Body ECU Connector
      GTY303514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D9-5 (CANH) - D9-6 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Main Body ECU [Instrument Panel Junction Block Assembly])

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (MAIN BODY ECU) 

    OK → REPLACE MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) 

  13. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY) 
    1. Disconnect the D37 air conditioning amplifier assembly connector.
    2. Select "Bus Check" on the Techstream, refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      "Air Conditioner" is not displayed on the Techstream A
      Several ECUs and sensors in addition to "Air Conditioner" are displayed on the Techstream B

    B → See step   15 

    A: Go to next step 

  14. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (AIR CONDITIONING AMPLIFIER ASSEMBLY CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 7: Disconnecting D37 Air Conditioning Amplifier Assembly Connector
      GTY301094Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D37-11 (CANH) - D37-12 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Air Conditioning Amplifier Assembly)

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY) 

    OK → See step   25 

  15. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (ECM) 
    1. Disconnect the A67 ECM connector.
    2. Select "Bus Check" on the Techstream, refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      "Engine" is not displayed on the Techstream A
      Several ECUs and sensors in addition to "Engine" are displayed on the Techstream B

    B → See step   17 

    A: Go to next step 

  16. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (ECM CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 8: Disconnecting A67 ECM Connector
      GTY307161Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      A67-12 (CANH) - A67-25 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to ECM)

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (ECM) 

    OK → See step   26 

  17. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (POWER STEERING ECU ASSEMBLY) 
    1. Disconnect the D6 power steering ECU assembly connector.
    2. Select "Bus Check" on the Techstream, refer to DIAGNOSIS SYSTEM .
      RESULT

      Result Proceed to
      "EPS" is not displayed on the Techstream A
      Several ECUs and sensors in addition to "EPS" are displayed on the Techstream B

    B → See step   19 

    A: Go to next step 

  18. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (POWER STEERING ECU ASSEMBLY CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 9: Disconnecting D6 Power Steering ECU Assembly Connector
      GTY299715Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

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

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D6-2 (CANH) - D6-8 (CANL) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Rear view of wire harness connector
      (to Power Steering ECU Assembly)

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (POWER STEERING ECU ASSEMBLY) 

    OK → See step   27 

  19. CHECK FOR OPEN IN ONE SIDE OF CAN BRANCH WIRE (BUS BUFFER ECU CAN BRANCH WIRE) 
    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistance of the CAN main wire and CAN branch wire.
      Fig 10: Disconnecting D50 Bus Buffer ECU (Accessory Gateway) Connector
      GTY299754Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      NOTE:

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected, refer to INITIALIZATION .

    2. Disconnect the D50 bus buffer ECU (accessory gateway) connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Switch Condition Specified Condition
      D50-1 (CAN+) - D50-2 (CAN-) Ignition switch off 54 to 69 Ω
      TEXT IN ILLUSTRATION

      *a Front view of wire harness connector
      (to Bus Buffer ECU [Accessory Gateway])

    NG → REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR (BUS BUFFER ECU) 

    OK → REPLACE BUS BUFFER ECU (ACCESSORY GATEWAY) 

  20. REPLACE SKID CONTROL ECU ASSEMBLY. Refer to  REMOVAL 
  21. REPLACE STEERING ANGLE SENSOR. Refer to  REMOVAL 
  22. REPLACE YAW RATE SENSOR ASSEMBLY. Refer to  REMOVAL 
  23. REPLACE NAVIGATION RECEIVER ASSEMBLY. Refer to  REMOVAL 
  24. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL 
  25. REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL 
  26. REPLACE ECM. Refer to  REMOVAL 
  27. REPLACE POWER STEERING ECU ASSEMBLY. Refer to  REMOVAL 
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