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)]
SM2335154
id0403b2896000
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Troubleshooting item |
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 |
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Possible cause
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• 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)
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Diagnostic procedure
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Step |
Inspection |
Results |
Action |
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1
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CONFIRM DSC HU/CM AND PCM DTC
• Retrieve the DSC HU/CM DTC using the M-MDS. (See DTC INSPECTION.)
• Retrieve the PCM DTC using the M-MDS, if the traction control function has problem. (See DTC INSPECTION.)
• Are any DTCs present?
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Yes
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Go to the applicable DTC inspection.
(See DTC TABLE [DSC HU/CM (US)].)
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No
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Go to the next step.
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2
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INSPECT TIRE SIZE AND AIR PRESSURE
• Inspect tire size and air pressure.
• Tire size and air pressure as specified? (See WHEEL AND TIRE SPECIFICATION [(US)].)
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Yes
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Go to the next step.
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No
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Replace with specified tires and adjust tire air pressure, and perform the repair completion verification.
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3
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INSPECT ABS WHEEL-SPEED SENSOR
• Inspect for each ABS wheel-speed sensor. (See FRONT ABS WHEEL-SPEED SENSOR INSPECTION.) (See REAR ABS WHEEL-SPEED SENSOR INSPECTION.) (See REAR ABS WHEEL-SPEED SENSOR INSPECTION [2WD].) (See REAR ABS WHEEL-SPEED SENSOR INSPECTION [AWD].)
• Is the ABS wheel-speed sensor normal?
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Yes
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Found malfunctioning part according to the “INTERMITTENT CONCERN TROUBLESHOOTING”.
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No
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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.
Perform the repair completion verification.
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Repair completion verification
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VERIFY THAT MALFUNCTION SYMPTOMS DO NOT RECUR AFTER REPAIR
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Has the malfunction symptom been eliminated?
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Yes
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Complete the symptom troubleshooting.
Explain to the customer what has been repaired.
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No
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Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
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