ABS 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.
Brake pressure retention
BRAKE PRESSURE RETENTION REFERENCECommand name Inspected wheels LF RF LR RR V_TRC_L Off V_TRC_R V_STB_L V_STB_R 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 Brake pressure reduction
BRAKE PRESSURE RETENTION REFERENCECommand name Inspected wheels LF RF LR RR V_TRC_L Off V_TRC_R V_STB_L V_STB_R 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 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.
NOTE:- When working with two people, one should press on the brake pedal, and the other should attempt to rotate the wheel being inspected.
- Send the command while depressing on the brake pedal and attempting to rotate the wheel being inspected.
- While brake pressure is maintained and a DSC HU/CM operation click sound is heard, confirm that the wheel does not rotate. While brake pressure is being reduced and an DSC HU/CM operation click sound is heard, confirm that the wheel rotates.
- 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: