Antilock Brakes / Traction Control Systems: Service Precautions

BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS: VEHICLE STABILITY CONTROL SYSTEM: PRECAUTION

* When there is a malfunction in the contact point of the terminals or installation problems with parts, removal and installation of the suspected problem parts may return the system to normal either completely or temporarily.

* In order to determine the malfunctioning area, be sure to check the conditions at the time the malfunction occurred, such as by DTC output and freeze frame data output, and record it before disconnecting each connector or removing and installing parts.

* Since the vehicle stability control system may be influenced by a malfunction in the other systems, be sure to check for DTCs in the other systems.

* Be sure to remove and install the hydraulic brake booster and each sensor with the engine switch off unless specified in the inspection procedure.

* When removing and installing the hydraulic brake booster and each sensor, be sure to check that the normal display is output in test mode inspection and in DTC output inspection after installing all the parts.

* After replacing the master cylinder solenoid and/or the yaw rate and G sensor, make sure to perform yaw rate and G sensor zero point calibration Programming and Relearning.

* The CAN communication system is used for data communication between the skid control ECU (included in the master cylinder solenoid), ECM, four wheel drive control ECU, combination meter, DLC3, steering angle sensor, and yaw rate sensor (the G sensor is included). If there is trouble in the CAN communication line, the DTC of the communication line is stored.

* If the DTC of the CAN communication line is stored, repair the malfunction in the communication line first and then troubleshoot the vehicle stability control system.

* Since the CAN communication line has its own length and route, it cannot be repaired temporarily with a bypass wire, etc.