DSC Control Inspection

Set up an active command mode inspection according to the combination of commands below.

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.

Fig 1: Identifying DLC-2 Connector
Courtesy of MAZDA MOTORS CORP.

BRAKE PRESSURE RETENTION

Command name	Inspected wheels
	Understeer control disabled		Oversteer control disabled
	LF	RF	LR	RR
LF_TC_PRV	On	Off		On
RF_TC_PRV	Off	On		Off
LF_TC_SWV	Off
RF_TC_SWV	Off
LF_INLET	Off	Off	Off	On
LF_OUTLET		Off		Off
LR_INLET		On
LR_OUTLET		Off
RF_INLET			On
RF_OUTLET			Off
RR_INLET	On
RR_OUTLET	Off
PMP_MOTOR	On

Send the command while rotating the wheel being inspected by hand in a forward direction.
Confirm that the wheel does not rotate easily while a DSC HU/CM operation click sound is heard.
- 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