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 [DYNAMIC STABILITY CONTROL (DSC)]

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 [DYNAMIC STABILITY CONTROL (DSC)]

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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)

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. (See WHEEL AND TIRE SPECIFICATION [European (L.H.D., U.K.) Specs. ].) (See WHEEL AND TIRE SPECIFICATION [Australian Specs.].) • 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.)

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)