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CAN Communication System: Precautions

WARNING: This page is about a different car, the 2018 Subaru BRZ. However, it is still accessible from the selected car via links, so may be relevant.
  1. If DTC related with CAN communication system is output, always start the troubleshooting according to the procedure described in "How to troubleshoot". (Refer to HOW TO TROUBLESHOOT )
  2. Caution in handling of SRS airbag system (Refer to PRECAUTIONS )
    CAUTION: This service operation may affect the SRS airbag. Be sure to follow the precautions for SRS airbag during the operation.
  3. Caution during harness repair
    1. When repairing the wire, connect the wires using soldering and protect it with tape.
      G12589022Courtesy of SUBARU OF AMERICA, INC.
      CAUTION:
      • Bus lines (communication lines) must be twisted. Be careful not to make clearance between CAN-H and CAN-L.
      • Fray at the connector should be within 8 cm.
      • Do not change the line length. (CAN-H and CAN-L must have the same length).
    2. Do not connect a wire to bypass the defective section.
      G12589023Courtesy of SUBARU OF AMERICA, INC.
      CAUTION:
      • If bypassed, the twisted lines will lose their properties.
      • Do not bypass using the twisted pair line.
  4. How to measure resistance
    1. When measuring the resistance, insert the probes from the back side of the connector.
      G08552867Courtesy of SUBARU OF AMERICA, INC.
      G12589025Courtesy of SUBARU OF AMERICA, INC.
    2. If it cannot be inserted from the back side, use a repair wiring harness.
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