Introduction to Traction Control System Diagnosis

INTRODUCTION TO TRACTION CONTROL SYSTEM DIAGNOSIS
The TCL is a system that has added the cut valve and suction valve to the conventional ABS system. These valves are used to control each of the road wheels independently. These differences include sounds, sensations, and vehicle performance that owners and service technicians who are not familiar with TCL may not be used to.

Some operational characteristics may seem to be malfunctions, but they are simply signs of normal TCL operation. When diagnosing the TCL system, keep these operational characteristics in mind. Inform the owner of the kind of performance characteristics to expect from a TCL-equipped vehicle.

TCL DIAGNOSTIC TROUBLE CODE DETECTION CONDITIONS
TCL diagnostic trouble codes (TCL DTCs) are set under different conditions, depending on the malfunction detected. Most TCL DTCs will only be set during vehicle operation. Some TCL DTCs will also be set during the TCL self-check immediately after the engine is started.

When you check if a TCL DTC will be displayed again after the DTC has been erased, you should duplicate the TCL DTC set conditions. Depending on the detection timing and set conditions for the specific TCL DTC, you must either drive the vehicle or turn the engine off and restart it. To set the proper conditions for that DTC again, refer to "TCL DTC SET CONDITIONS" for each TCL DTC that you are trying to reset.