Can Communication System (For Sedan) Precaution

Power Source Network. Yaris. Ncp93, 131
Networking. Yaris. Ncp93, 131

  1. PRECAUTION

  1. STEERING SYSTEM HANDLING PRECAUTIONS

  1. SRS AIRBAG SYSTEM HANDLING PRECAUTIONS

  1. BUS LINE REPAIR

  1. CONNECTOR HANDLING

Can Communication System (For Sedan) -- Precaution



1.PRECAUTION

  1. Turn the ignition switch off before measuring the resistances of the CAN main wire and the CAN branch wire.

  2. After the ignition switch is turned off, check that the key reminder warning system and light reminder warning system are not in operation.

  3. Before measuring the resistance, leave the vehicle as is for at least 1 minute and do not operate the ignition switch, any other switches or the doors. If doors need to be opened in order to check connectors, open the doors and leave them open.

    HINT:
    Operating the ignition switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

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) 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 removal or installation of parts, inspection or replacement), be sure to read the precautionary notice for the Supplemental Restraint System (YARIS_NCP93 RM000000KT10D1X.html).


4.BUS LINE REPAIR


    Yaris. Ncp93, 131

  1. After repairing the bus line with solder, wrap the repaired part with vinyl tape (YARIS_NCP93 RM000000UZ309WX.html).

    NOTICE:
    1. The CANL bus line and CANH bus line must always be installed together.
    2. When installing, twist them together.
    3. CAN bus lines are likely to be influenced by noise if the bus lines are not twisted together.
    4. Leave approximately 80 mm (3.150 in.) loose in the twisted wires around the connectors.
    5. When repairing the CAN bus lines, do not change the length of the lines. (Make sure that the length of the CANH bus line and CANL bus line are the same.)


    2. Yaris. Ncp93, 131.Networking.Can Communication System (For Sedan).Can Communication System (For Sedan) Precaution

  2. Do not use bypass wiring between the connectors.

    NOTICE:
    The feature of the twisted wire harness will be lost if bypass wiring is used.

5.CONNECTOR HANDLING
Yaris. Ncp93, 131.Networking.Can Communication System (For Sedan).Can Communication System (For Sedan) Precaution

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



    2. Yaris. Ncp93, 131.Networking.Can Communication System (For Sedan).Can Communication System (For Sedan) Precaution

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