Operation of DSC Inspection
- Perform the "Preparation."
- Connect M-MDS to the DLC-2.
- Set up an active command modes inspection according to the combination of commands below.NOTE: When working with two people, one should press on the brake pedal, the other should attempt to rotate the wheel being inspected.
Pressure retention
PRESSURE RETENTION REFERENCECommand name Wheels LF RF LR RR LF_TC_VLV OFF RF_TC_VLV LF_DSC_V RF_DSC_V ABS_POWER ON LF_INLET ON OFF OFF OFF LF_OUTLET OFF LR_INLET ON LR_OUTLET OFF RF_INLET ON RF_OUTLET OFF RR_INLET ON RR_OUTLET OFF PMP_MOTOR Pressure reduction
PRESSURE REDUCTION REFERENCECommand name Wheels LF RF LR RR LF_TC_VLV OFF RF_TC_VLV LF_DSC_V RF_DSC_V ABS_POWER ON LF_INLET ON OFF OFF OFF LF_OUTLET LR_INLET OFF ON LR_OUTLET RF_INLET ON OFF RF_OUTLET RR_INLET OFF ON RR_OUTLET PMP_MOTOR ON NOTE:- To protect the DSC HU/CM, the solenoid valve used for simulations and the ABS motor stay on for 10 s each time they are switched on.
- Send the command while pressing on the brake pedal and attempting to rotate the wheel being inspected.
- When pressure is being maintained, and a click sound indicating the solenoid is operating comes from the DSC HU/CM, confirm that the wheel does not rotate. When pressure is being reduced, and a click sound indicating the solenoid is operating comes from DSC HU/CM, confirm that the wheel rotates, even though the brake pedal is being depressed.
- Performing the inspections above determines the following.
- The DSC HU/CM brake lines are normal
- The DSC HU/CM hydraulic system is not significantly abnormal
- The DSC HU/CM wiring is normal
- Output system harness in DSC HU/CM (solenoid, relay) are normal
- However, the following items cannot be checked.
- The DSC HU/CM input system harness and parts
- Extremely small leaks in the DSC HU/CM internal hydraulic system
- Unusual intermittent occurrences in the above items
- Performing the inspections above determines the following.