ANTI-LOCK BRAKE SYSTEM PRECAUTION


  1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL

    Note

    When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected:

    System See Procedure
    Stop and Start System

    Click here

    Simple Intelligent Parking Assist System
    Power Door Lock Control System (for Hatchback, Wagon)

  2. TROUBLESHOOTING PRECAUTION


    1. When there is a malfunction with terminal contact points or part installation problems, removal and installation of the suspected parts may return the system to normal either completely or temporarily.

    2. In order to determine the malfunctioning area, be sure to check the conditions at the time the malfunction occurred, such as DTC output and Freeze Frame Data, and record it before disconnecting any connector or removing and installing parts.

    3. Since the system may be influenced by malfunctions in systems other than the ABS system, be sure to check for DTCs in other systems.

  3. HANDLING PRECAUTION


    1. Be sure to perform preparation before work and confirmation after work is completed by following the directions in the repair manual when working on the ABS system.

    2. Be sure to remove and install the skid control ECU (brake actuator assembly), sensors, etc. with the ignition switch off unless it is otherwise specified in the inspection procedure.

    3. If the skid control ECU (brake actuator assembly) or a sensor has been removed and installed, it is necessary to check the system for problems after the parts have been reassembled. Check for DTCs using the GTS. Also check that the system functions and signals received by the ECU are normal using Test Mode.

  4. DTC PRECAUTION


    1. Warnings for some DTCs cannot be cleared only by repairing the malfunctioning parts. If the warning is displayed after repair work, the DTC should be cleared after turning the ignition switch off.

      Note

      If a DTC for a malfunctioning part reappears after it was cleared, then it has been stored again.

    2. When 2 or more DTCs are detected, perform diagnosis for each DTC, one by one until the problem is identified.

  5. CAN COMMUNICATION SYSTEM PRECAUTION


    1. The CAN communication system is used for communication between the skid control ECU (brake actuator assembly) and other ECUs. If there is trouble in the CAN communication line, corresponding DTCs in the communication line are output.

    2. If any CAN communication DTCs are output, repair the malfunction, then troubleshoot the ABS system while communication is normal.

    3. In order to enable CAN communication, a specific type of wiring is used for the CAN communication lines. The wiring used for each communication line is a twisted pair of wires that have an equal length. A bypass wire should not be used because the data being transmitted will be corrupted.