NO.15 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 OPERATES
id040300901300
15
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 operates.
[TROUBLESHOOTING HINTS]
• There is a difference in size or air pressure between the front and rear tires
• Incorrect ABS wheel-speed signal is inputted to DSC HU/CM
• There is a malfunction in the engine control system (TCS malfunction)
Diagnostic procedure
STEP
INSPECTION
ACTION
1
INSPECT FOR DTCS IN DSC HU/CM
• Check the DTC for the DSC ON-BOARD DIAGNOSTIC SYSTEM.
• Have DTCs been recorded in memory?
Yes
Perform inspection using appropriate DTC.
No
Go to next step.
2
INSPECT TIRE SIZE AND AIR PRESSURE
• Inspect tire size and air pressure.
• Are size and air pressure as specified?
Yes
Go to next step.
No
Replace with specified tires and adjust tire air pressure.
3
INSPECT ABS WHEEL-SPEED SENSOR OUTPUT PULSE
• Inspect the output value from the ABS wheel-speed sensor.
• Is output value normal?
Yes
Found malfunctioning part according to "INTERMITTENT CONCERN TROUBLESHOOTING".
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.