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Home >> Toyota >> 2007 >> Highlander Hybrid Limited, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (Hybrid) >> Can Communication System >> Diagnosis System

Diagnosis System

  1. BUS CHECK 
    1. Select "BUS CHECK" from the "OBD/MOBD MENU" screen.
      Fig 1: Intelligent Tester Screen - BUS CHECK
      G05205799Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT:

      The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the intelligent tester via CAN VIM.

    2. Press "ENTER" on the intelligent tester screen via CAN VIM.
      Fig 2: Intelligent Tester Screen - ENTER
      G04982230Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. The screen displays the ECUs and sensors that are properly connected to the CAN communication system.

      HINT:

      If ECUs or sensors that should be properly connected are not displayed, there is a communication stop in the system.

  2. CAN COMMUNICATION SYSTEMS (ECUS & SENSORS) 
    1. CAN Communication systems (ECUS & SENSORS)
      Fig 3: Intelligent Tester Screen - BUS CHECK
      G04982231Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      CAN COMMUNICATION DESCRIPTION

      ECU/Sensor Name Check Method
      Skid control ECU Installed on all vehicles
      Steering sensor Installed on all vehicles
      Yaw rate sensor Installed on all vehicles
      HV control ECU Installed on all vehicles
      Gateway ECU Installed on all vehicles
      Power steering ECU Installed on all vehicles
  3. DTC TABLE BY ECU 

    HINT:

    • In the CAN communication system, CAN communication system DTCs can be displayed by the ECU using the intelligent tester.
    • If CAN communication system DTCs are output, trouble cannot be determined only by the DTCs. Perform troubleshooting according to "HOW TO PROCEED WITH TROUBLESHOOTING ".
    1. HV control ECU (HV)

      HINT:

      • DTC communication uses the CAN communication system.
        DETECTION ITEM AND TERMINAL NUMBER REFERENCE

        DTC No. Detection Item
        P3108-594 A/C Amplifier Communication Circuit Malfunction
        P0A1D-615 Communication Error from HV ECU
        U0100-211 Lost Communication With ECM/PCM "A"
        U0100-212 Lost Communication With ECM/PCM "A"
        U0100-530 Lost Communication With ECM/PCM "A"
        U0100-774 Lost Communication With ECM/PCM "A"
        U0100-784 Lost Communication With ECM/PCM "A"
        U0129-220 Lost Communication With Brake System Control Module
        U0129-222 Lost Communication With Brake System Control Module
        U0129-528 Lost Communication With Brake System Control Module
        U0129-529 Lost Communication With Brake System Control Module
        U131-433 Lost Communication With Power Steering Control Module
        U131-434 Lost Communication With Power Steering Control Module
        U0146-435 Lost Communication With Gateway "A"
      • Check for INFORMATION (See INFORMATION / FREEZE FRAME DATA ).
      • DTCs U0110-159, U0110-160, U0100-656, and U0110-657 are not the DTCs for the CAN communication system. Therefore, refer to the troubleshooting procedures for the hybrid control system.
    2. HV control ECU (ENGINE)
      DETECTION ITEM AND TERMINAL NUMBER REFERENCE

      DTC No. Detection Item
      U0001 Control Module Communication Bus Off
      U0293 Lost Communication With HV Control ECU
    3. Skid control ECU

      HINT:

      DTC communication uses the SIL line.

      DETECTION ITEM AND TERMINAL NUMBER REFERENCE

      DTC No. Detection Item
      U0123 Lost Communication With Yaw Rate Sensor Module
      U0124 Lost Communication With Lateral Acceleration Sensor Module
      U0126 Lost Communication With Steering Sensor Module
      U0293 Lost Communication With HV Control ECU

      Check for INFORMATION (See DIAGNOSTIC TROUBLE CODE CHART ).

    4. Power steering ECU
      DETECTION ITEM AND TERMINAL NUMBER REFERENCE

      DTC No. Detection Item
      U0073 Control Module Communication Bus Off
      U0105 Lost Communication With ECM/PCM "A"
      U0121 Lost Communication With Anti-lock Brake System (ABS) Control Module
    5. Gateway ECU

      HINT:

      The gateway ECU is connected to the CAN communication system, but CAN communication DTCs are not output.

  4. DTC COMBINATION TABLE 
    DTC COMBINATION CHART

    DTC Trouble Mode
    Output from Output DTC HV CONTROL ECU COMMUNICATION STOP MODE SKID CONTROL ECU COMMUNICATION STOP MODE STEERING SENSOR COMMUNICATION STOP MODE YAW RATE SENSOR COMMUNICATION STOP MODE GATEWAY ECU COMMUNICATION STOP MODE HYBRID VEHICLE ECU COMMUNICATION STOP MODE
    HV control ECU (HV) U0100 *1 - X X X X X
    P0A1D-615 - X X X X X
    U0129-220, 528 *2 - ◦ X X X X
    U0131-433,434 - X X X ◦ X
    U0146-435 - X X X X X
    P3108-594 - X X X X X
    HV control ECU (Engine) U0001 *1 - X X X X X
    U0293 *1 - X X X X X
    Skid control ECU U0123 X - X ◦ X X
    U0124 X - X ◦ X X
    U0126 X - ◦ X X X
    U0293 ◦ - X X X X
    Power steering ECU U0073 X X X X - X
    U0105 Δ
    During driving    		 X X X - X
    U0121 X ◦ X X - X
    HINT:
    • ◦: Output
    • Δ: Output under the condition shown in the table above.
    • X: Not output or may be output according to the malfunctioning part when one side of the CAN bus lines opens
    • *1: If only following DTCs for the CAN communication system are output, refer to the troubleshooting procedures for the hybrid control system.

    Output DTC 

    OUTPUT DTC

    ECU DTC No.
    HV CONTROL ECU (HV)
    • U0100-211
    • U0100-212
    • U0100-530
    • U0100-774
    • U0100-784
    HV CONTROL ECU (ENGINE)
    • U0001
    • U0293

    *2: If the HV control ECU outputs DTC U0129-222, refer to the troubleshooting procedures for DTC U0293 output from the skid control ECU. If DTC U0129-529 is output, check for DTCs of the skid control ECU.

    1. Perform troubleshooting according to the combination of DTCs output.

      HINT:

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