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. (See
ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)]
).
BRAKE PRESSURE RETENTION
| Command name |
Inspected wheels |
| LF |
RF |
LR |
RR |
| PMP_MTR |
OFF |
| V_LF_INL |
On |
Off |
Off |
Off |
| V_LF_OTL |
Off |
| V_LR_INL |
On |
| V_LR_OTL |
Off |
| V_RF_INL |
On |
| V_RF_OTL |
Off |
| V_RR_INL |
On |
| V_RR_OTL |
Off |
| V_STB_L |
Off |
| V_STB_R |
| V_TRC_L |
| V_TRC_R |
BRAKE PRESSURE REDUCTION
| Command name |
Inspected wheels |
| LF |
RF |
LR |
RR |
| PMP_MTR |
ON |
| V_LF_INL |
On |
Off |
Off |
Off |
| V_LF_OTL |
| V_LR_INL |
Off |
On |
| V_LR_OTL |
| V_RF_INL |
On |
Off |
| V_RF_OTL |
| V_RR_INL |
Off |
On |
| V_RR_OTL |
| V_STB_L |
Off |
| V_STB_R |
| V_TRC_L |
| V_TRC_R |
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