Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
DSC Control Inspection
- Perform "Preparation".
- Connect the M-MDS to the DLC-2.
- Set up an active command mode inspection according to the combination of commands below.CAUTION:
- To protect the DSC HU/CM, the solenoid valve and the pump motor used during active command mode stay on for only 10 s or less each time they are switched on.
DSC CONTROL INSPECTION REFERENCECommand name Inspected wheels Understeer control inhibited Oversteer control inhibited LF RF LR RR V_TRC_L On Off On V_TRC_R Off On Off V_STB_L Off V_STB_R LF_INLET Off Off Off On LF_OUTLET Off LR_INLET On LR_OUTLET Off RF_INLET On RF_OUTLET Off RR_INLET On RR_OUTLET Off PMP_MOTOR On Send the command while rotating the wheel being inspected by hand in a forward direction.
- Confirm that the wheel does not rotate easily while a DSC HU/CM operation click sound is heard.
- Performing the inspection above determines the following:
- The DSC HU/CM brake lines are normal.
- The DSC HU/CM hydraulic system is not significantly abnormal (including DSC HU/CM).
- The DSC HU/CM internal electrical parts (solenoid, motor and other parts) are normal.
- The DSC unit and DSC HU/CM output system wiring harnesses (solenoid valve, relay system) are normal.
- However, the following items cannot be verified.
- Malfunction with intermittent occurrence of the above items
- Malfunction of DSC HU/CM input system wiring harnesses and parts
- Extremely small leaks in the DSC HU/CM internal hydraulic system
- Performing the inspection above determines the following:
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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