Diagnostic procedure

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

STEP

INSPECTION

ACTION

CONFIRM DSC HU/CM AND PCM DTC

Retrieve the DSC HU/CM DTC using the M-MDS. (See DTC INSPECTION [DYNAMIC STABILITY CONTROL (DSC)] .)
Retrieve the PCM DTC using the M-MDS, if the traction control function has problem. (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.5)] .)
Are any DTCs present?

Yes

Go to the applicable DTC inspection.
(See DTC TABLE [DYNAMIC STABILITY CONTROL (DSC)] .)
(See DTC TABLE [PCM (SKYACTIV-G 2.5)] .)

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.

⁽¹⁾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.

⁽¹⁾

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.