Diagnostic Procedure

NO. 5 ABS OR TCS 1 OPERATES FREQUENTLY/TCS DOES NOT WORK CORRECTLY 1: DSC SYSTEM FUNCTION CONTAINS TRACTION CONTROL FUNCTION, TCS/DSC INDICATOR LIGHT TURNS ON AND OFF WHILE TCS OPERATES (DYNAMIC STABILITY CONTROL) - DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	CONFIRM DSC HU/CM AND PCM DTC Retrieve the DSC HU/CM DTC using the M-MDS (IDS). (See ON-BOARD DIAGNOSIS .) Retrieve the PCM DTC using the M-MDS (IDS), if the traction control function has a problem. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS .) (See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
1		No	Go to the next step.
2	INSPECT TIRE SIZE AND AIR PRESSURE Inspect tire size and air pressure. Is the tire 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 ABS WHEEL-SPEED SENSOR OUTPUT PULSE Perform the Voltage Pattern Inspection for each ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION .) (See REAR ABS WHEEL-SPEED SENSOR INSPECTION .) Is the output voltage pattern normal?	Yes	Found malfunctioning part according to the "INTERMITTENT CONCERN TROUBLESHOOTING". (See PRECAUTION .)
*3		No	ABS wheel-speed sensor installation inspection: Inspect the ABS wheel-speed sensor for looseness and confirm it is securely installed. ABS sensor rotor installation inspection: Inspect the ABS sensor rotor for poor installation. Repair or replace any malfunctioning parts according to the inspection result.

When performing an asterisked (*) troubleshooting inspection, shake the wiring harness and connectors while doing the inspection to discover whether poor contact points are the cause of any intermittent malfunctions. If there is a problem, verify that connectors, terminals and wiring harnesses are connected correctly and undamaged.