NO.6 DSC*2 OPERATES FREQUENTLY/DSC DOES NOT WORK CORRECTLY *2: TCS/DSC INDICATOR LIGHT GOES ON AND OFF WHILE DSC OPERATES [DYNAMIC STABILITY CONTROL (DSC)]
NO.6 DSC*2 OPERATES FREQUENTLY/DSC DOES NOT WORK CORRECTLY *2: TCS/DSC INDICATOR LIGHT GOES ON AND OFF WHILE DSC OPERATES [DYNAMIC STABILITY CONTROL (DSC)]
SM2335155
id0403b2896100
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Troubleshooting item |
DSC*2 operates frequently DSC does not work correctly *2: TCS/DSC indicator light goes on and off while DSC operates |
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Possible cause
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• DSC HU/CM detected malfunction. (Input and output device malfunction)
• There is a difference in size or air pressure between front or rear tires.
• Poor installation with SAS control module (yaw rate sensor, low-G sensor) (If SAS control module is poorly installed, DSC may operate intermittently.)
• When replacing DSC HU/CM initialization is not performed. (If initialization is not performed correctly, DSC may not work correctly.)
• Incorrect ABS wheel speed sensor is inputted to DSC HU/CM.
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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 DTC
• Retrieve the DSC HU/CM DTC using the M-MDS. (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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VERIFY THAT SAS CONTROL MODULE IS INSTALLED
• Verify that each sensor is installed.
• Is SAS control module (yaw rate sensor, low-G sensor) securely installed?
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Yes
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Go to the next step.
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No
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Install the malfunctioning sensor securely, and perform the repair completion verification.
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3
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VERIFY THAT BRAKE FLUID PRESSURE SENSOR IS INITIALIZED
• Verify that each sensor is initialized.
• Has the initialization for the DSC HU/CM been performed after replacing the DSC HU/CM and the SAS control module?
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Yes
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Go to the next step.
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No
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Perform the initialization procedure, and perform the repair completion verification.
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4
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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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5
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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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