Anti-Lock Brake System (For Hatchback) Precaution

Brake. Yaris. Ncp93, 131
Brake Control Dynamic Control Systems. Yaris. Ncp93, 131

  1. TROUBLESHOOTING PRECAUTIONS

  1. HANDLING PRECAUTIONS

  1. DTC PRECAUTION

  1. CAN COMMUNICATION SYSTEM PRECAUTIONS

Anti-Lock Brake System (For Hatchback) -- Precaution



1.TROUBLESHOOTING PRECAUTIONS

  1. When there are malfunctions with terminal contact points or part installation problems, removal and installation of the suspected problem parts may return the system to the normal condition either completely or temporarily.

  2. In order to determine the malfunctioning area, check the conditions at the time the malfunction occurred, such as DTC output and the Freeze Frame Data, and record them before disconnecting each 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.


2.HANDLING PRECAUTIONS

  1. Be sure to remove and install the ECU, brake actuator and each sensor, etc. with the ignition switch off unless otherwise specified in the inspection procedure.

  2. If the ECU, brake actuator 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 Techstream, and also check that system functions and signals received by the ECU are normal using Test Mode.

  3. If replacing the skid control ECU (brake actuator assembly), always replace it with a new one (if the skid control ECU (brake actuator assembly) is not replaced with a new one, DTCs may be stored).

    NOTICE:
    Do not use a skid control ECU (brake actuator assembly) from another vehicle. (display model, etc.)

3.DTC PRECAUTION

  1. Some DTCs cannot be cleared only by repairing the malfunctioning parts. If the DTC is output after repair work, turn the ignition switch off to clear the DTC.

    NOTICE:
    If a part is still malfunctioning even after the DTC is cleared, the DTC will be stored again.

4.CAN COMMUNICATION SYSTEM PRECAUTIONS

  1. The CAN communication system is used for data communication among the skid control ECU, and other ECUs. If there is trouble in the CAN communication line, corresponding communication line DTCs are output.

  2. If any CAN communication line DTC is output, repair the malfunction in the communication line and troubleshoot the ABS system after data communication becomes 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 of equal length. A bypass wire should not be used because the data being transmitted will be corrupted.