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.
- 4. Send the command while depressing on the brake pedal and attempting to rotate the wheel being inspected.
- 5. 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: