CAN COMMUNICATION SYSTEM PRECAUTION


  1. IGNITION SWITCH EXPRESSION

    Tech Tips

    The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.

    Expression Ignition Switch (Position) Engine Switch (Condition)
    Ignition Switch off LOCK Off (Lock)
    Ignition Switch ACC ACC On (ACC)
    Ignition Switch ON ON On (IG)
    Engine Start START On (Start)

  2. STEERING SYSTEM HANDLING PRECAUTIONS


    1. Care must be taken when replacing parts. Incorrect replacement could affect the performance of the steering system and result in hazards when driving.

  3. SRS AIRBAG SYSTEM HANDLING PRECAUTIONS


    1. This vehicle is equipped with an SRS (Supplemental Restraint System), which includes components such as the driver airbag and front passenger airbag. Failure to carry out service operations in the correct sequence could cause unexpected SRS deployment during servicing and may lead to a serious accident. Before servicing (including installation/removal, inspection and replacement of parts), be sure to read the precautionary notice for the Supplemental Restraint System Click here.

  4. NAVIGATION SYSTEM PRECAUTIONS

    Note

    After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.

  5. BUS LINE REPAIR


    1. A01IOX8

      After repairing the bus line with solder, wrap the repaired part with vinyl tape Click here.

      Note


      • The CANL bus line and CANH bus line must be installed together.

      • When installing the CAN bus lines, make sure to twist them.

      • CAN bus lines are likely to be influenced by noise if the bus lines are not twisted together.

      • Leave approximately 80 mm (3.15 in.) loose in the twisted wires around the connectors.

    2. A01IRCGE03
      Text in Illustration
      *1 By-pass Wire

      Do not use by-pass wiring between the connectors.

      Note

      The protective effect of the twisted wire harness will be lost if bypass wiring is used.

  6. CONNECTOR HANDLING


    1. A01IO5PE02
      Text in Illustration
      *1 Tester Probe

      When inserting probes into a connector, insert them from the rear of the connector.

    2. A01ITXHE02
      Text in Illustration
      *1 Repair Wire

      Use a repair wire to check the connector if it is impossible to check resistance from the rear of the connector.

  7. PRECAUTIONS WHEN REPLACING A GATEWAY FUNCTION EQUIPPED ECU (SUB BUS MONITOR ECU) WITH A USED ONE FROM ANOTHER VEHICLE


    1. When a gateway function equipped ECU (network gateway ECU) that was previously installed on another vehicle is used as a replacement part, it is necessary to initialize the connection information stored in the ECU.

      Note

      If the connection information stored in a gateway function equipped ECU that was previously installed on another vehicle is different from the actual ECUs and sensors connected to the corresponding bus, communication DTCs will be detected.

      Tech Tips

      When an ECU is replaced with one from a vehicle with the same options and specifications (the same connections to the corresponding bus), initialization of ECU connection information is not necessary.

    2. Initialize the connection information of a gateway function equipped ECU (sub bus monitor ECU).

    3. Connect the intelligent tester to the DLC3.

    4. Turn the ignition switch to ON.

    5. Turn the intelligent tester on.

    6. Enter the following menus: Body / PM2 Gateway / Utility.

    7. Select Initialization from Utility to initialize the ECU.