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 GOES ON AND OFF WHILE TCS OPERATES [DYNAMIC STABILITY CONTROL (DSC)]

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 GOES ON AND OFF WHILE TCS OPERATES [DYNAMIC STABILITY CONTROL (DSC)]

5	ABS or TCS^1 operates frequently TCS does not work correctly ^1: DSC system function contains traction control function, TCS/DSC indicator light goes on and off while TCS operates
POSSIBLE CAUSE	• There is a difference in size or air pressure between front and rear tires. • Incorrect ABS wheel-speed signal is inputted to DSC HU/CM. • There is a malfunction in engine control system. (TCS malfunction)

ABS or TCS^*1 operates frequently

TCS does not work correctly

^*1: DSC system function contains traction control function, TCS/DSC indicator light goes on and off while TCS operates

POSSIBLE CAUSE

• There is a difference in size or air pressure between front and rear tires.

• Incorrect ABS wheel-speed signal is inputted to DSC HU/CM.

• There is a malfunction in engine control system. (TCS malfunction)

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 [DYNAMIC STABILITY CONTROL (DSC)].) • Retrieve the PCM DTC using the M-MDS (IDS), if the traction control function has problem. (See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (SeeON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 2.2].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].) (See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See DTC TABLE [SKYACTIV-D 2.2].)
No	Go to the next step.
2	INSPECT TIRE SIZE AND AIR PRESSURE • Inspect tire size and air pressure. • Tire size and air pressure as specified?	Yes	Go to the next step.
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 [DYNAMIC STABILITY CONTROL (DSC)].)
No	ABS wheel-speed sensor installation inspection: • Inspect the ABS wheel-speed sensor for looseness and confirm it is securely adhered. ABS sensor rotor installation inspection: • Inspect the ABS sensor rotor for poor installation. Repair or replace any malfunctioning parts according to the inspection result.

STEP

INSPECTION

ACTION

CONFIRM DSC HU/CM AND PCM DTC

• Retrieve the DSC HU/CM DTC using the M-MDS (IDS).

(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)

• Retrieve the PCM DTC using the M-MDS (IDS), if the traction control function has problem.

(See ON-BOARD DIAGNOSTIC TEST [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

(SeeON-BOARD DIAGNOSTIC TEST [SKYACTIV-D 2.2].)

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

(See ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)].)

(See DTC TABLE [SKYACTIV-G 2.0, SKYACTIV-G 2.5].)

(See DTC TABLE [SKYACTIV-D 2.2].)

Go to the next step.

INSPECT TIRE SIZE AND AIR PRESSURE

• Inspect tire size and air pressure.

• Tire size and air pressure as specified?

Yes

Go to the next step.

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 [DYNAMIC STABILITY CONTROL (DSC)].)

ABS wheel-speed sensor installation inspection:

• Inspect the ABS wheel-speed sensor for looseness and confirm it is securely adhered.

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, check to make sure connectors, terminals and wiring harness are connected correctly and undamaged.