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

POSSIBLE CAUSE

• Difference in size or air pressure between front and rear tires.

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

• Malfunction in engine control system. (TCS malfunction)

STEP

INSPECTION

ACTION

1

• 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 a problem.

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

• Are any DTCs present?

Yes

Go to the applicable DTC inspection.

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

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

No

Go to the next step.

2

• Inspect tire size and air pressure.

• Is the tire size and air pressure as specified?

Yes

Go to the next step.

No

Replace with specified tires and adjust tire air pressure.

^*3

• 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 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.