Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Vehicle Stability Control System: Precaution
| System | See procedure |
|---|---|
| Intuitive Parking Assist System | INITIALIZATION |
| Power window control system | INITIALIZATION |
| Variable gear ratio steering system | INITIALIZATION |
- TROUBLESHOOTING PRECAUTION
HINT:
The vehicle stability control system includes the ABS, EBD, BA, TRAC, and VSC (see SYSTEM DESCRIPTION ).
NOTE:- 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 the normal condition 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 ABS and TRACTION actuator assembly and each sensor with the engine switch off unless specified in the inspection procedure.
- When removing and installing the ABS and TRACTION actuator assembly 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 ABS and TRACTION actuator assembly and/or the yaw rate and acceleration sensor, make sure to perform yaw rate and acceleration sensor zero point calibration (see CALIBRATION ).
- The CAN communication system is used for data communication between the skid control ECU, the steering angle sensor, and the yaw rate sensor (the acceleration sensor is included). If there is trouble in the CAN communication line, the DTC of the communication line is output.
- If the DTC of the CAN communication line is output, repair the malfunction in the communication line and troubleshoot the vehicle stability control system.
- Since the CAN communication line has its own length and route, it cannot be repaired temporarily with the bypass wire, etc.
- CHASSIS DYNAMOMETER PRECAUTION
- Disable TRAC and VSC control when using a chassis dynamometer.
When testing with 2-wheel drum tester such as a speedometer tester, a combination tester for the speedometer and brake, a chassis dynamometer, or when jacking up the rear wheels and turning the wheels, enter the "MAINTENANCE MODE" with the intelligent tester and turn the traction control off mode and the VSC system off mode.
CAUTION: If the vehicle is tested in normal mode on the drum tester, the traction control and VSC system may cause the vehicle to jump out from the drum tester.
- Disable TRAC and VSC control when using a chassis dynamometer.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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