Antilock Brakes / Traction Control Systems: Description and Operation

ABS Component Location:

GENERAL INFORMATION
The ABS consists of wheel speed sensors, stop light switch, hydraulic unit and the ABS-ECU. If a problem occurs in the system, the malfunctioning system can be identified by means of the diagnostic function. The diagnostic trouble code will not be erased ever if the ignition switch is turned to OFF. In addition, reading of diagnostic trouble codes, service data and actuator testing are possible using the scan tool.

ABS Valve Relay Values:

REMEDY FOR A DISCHARGED BATTERY
When booster cables are used to start the engine when the battery is completely discharged and then the vehicle is immediately driven without waiting for the battery to recharge itself to some extent, the engine may misfire or stall, making driving difficult.

This happens because ABS consumes a great amount of current for its self-check function. The remedy is to either allow the battery to recharge sufficiently, or to remove the fusible link for ABS circuit, thus disabling the anti-lock brake system.

The ABS warning light will illuminate when the fusible link (for ABS) is removed. After the battery has sufficiently charged, install the fusible link (for ABS) and restart the engine; then check to be sure the ABS warning light is not illuminated.