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 RETENTIONCommand name Inspected wheels LF RF LR RR LF_TC_PRV Off RF_TC_PRV LF_TC_SWV RF_TC_SWV 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 REDUCTIONCommand name Inspected wheels LF RF LR RR LF_TC_PRV Off RF_TC_PRV LF_TC_SWV RF_TC_SWV 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:- When operating the solenoid valve and pump motor using the active command mode, make sure to keep the operation time within 2 s to prevent damaging the DSC HU/CM.
NOTE:- When working with two people, one should press on the brake pedal, 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.
- When brake pressure is maintained and a DSC HU/CM operation click sound is heard, confirm that the wheel does not rotate. When brake pressure is being reduced and a 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 has no significant malfunction (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.
- Intermittent malfunction of the above items
- Malfunction of DSC HU/CM input system wiring harnesses and parts
- Extremely small leakage in the DSC HU/CM internal hydraulic system
- Performing the inspection above determines the following: