No. 4 Abs Or TCS1 Operates Frequently/TCS Does Not Work Correctly1: DSC System Function Contains Traction Control Function, DSC Indicator Light Goes On And Off While DSC Is Operating [Dynamic Stability Control (DSC)]

PROBLEM SYMPTOMS

4	ABS or TCS (1) operates frequently./TCS does not work correctly. (1): DSC system function contains traction control function; DSC indicator light goes on and off while DSC is operating.
[TROUBLESHOOTING HINTS] There is a difference in size or air pressure between the front and rear tires Incorrect ABS wheel-speed signal is input to DSC HU/CM There is a malfunction in the engine control system (TCS malfunction)

NO. 4 ABS OR TCS*1 OPERATES FREQUENTLY/TCS DOES NOT WORK CORRECTLY*1: DSC SYSTEM FUNCTION CONTAINS TRACTION CONTROL FUNCTION, DSC INDICATOR LIGHT GOES ON AND OFF WHILE DSC IS OPERATING DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	INSPECT DTCS IN DSC HU/CM Inspect the DTC for the DSC ON-BOARD DIAGNOSTIC SYSTEM. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .) Have DTCs been stored in memory?	Yes	Perform the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)] .)
1		No	Go to the next step.
2	INSPECT TIRE SIZE AND AIR PRESSURE Inspect the tire size and the air pressure. (Refer to the WHEEL AND TIRE SPECIFICATION in the appropriate Wheel and Tires article .) Are size and air pressure as specified?	Yes	Go to the next step.
2		No	Replace with specified tires and adjust tire air pressure.
3	INSPECT PID FOR ABNORMAL OUTPUT FROM ABS WHEEL-SPEED SENSOR USING M-MDS Turn the ignition switch off. Connect the M-MDS to the DLC-2. Select the following PIDs using the M-MDS: LF_WSPD (LF ABS wheel-speed sensor) LR_WSPD (LR ABS wheel-speed sensor) RF_WSPD (RF ABS wheel-speed sensor) RR_WSPD (RR ABS wheel-speed sensor) Start the engine and drive the vehicle. Verify that the PIDs of the four ABS wheel-speed sensors correspond approximately. Do the vehicle speeds correspond?	Yes	Find that malfunctioning part according to "INTERMITTENT CONCERN TROUBLESHOOTING".
3		No	ABS wheel-speed sensor installation inspection: Inspect the sensor for looseness and verify that it is securely installed. Sensor rotor installation inspection: Inspect the sensor rotor for poor installation and chipping of sensor rotor teeth. (If sensor rotor is installed poorly, it may cause output of abnormal wave form at high speed.)