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DSC Control Inspection

Perform "Preparation".
Connect the M-MDS to the DLC-2.

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

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

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.

DSC CONTROL INSPECTION REFERENCE

Command name	Inspected wheels
	Understeer control inhibited		Oversteer control inhibited
	LF	RF	LR	RR
V_TRC_L	On	Off		On
V_TRC_R	Off	On		Off
V_STB_L	Off
V_STB_R	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 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