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DSC Control Inspection

Perform the "Preparation."
Connect WDS or equivalent to the DLC-2.

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

Fig 1: Locating DLC-2 Connector

G04325977

Courtesy of MAZDA MOTORS CORP.

Pressure retention

PRESSURE RETENTION REFERENCE

Command name	Wheels
	Inhibition of understeer tendency control		Inhibition of oversteer tendency control
	LF	RF	LR	RR
LF_TC_VLV	ON	OFF		ON
RF_TC_VLV	OFF	ON		OFF
LF_DSC_V	OFF
RF_DSC_V	OFF
ABS_POWER	ON
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	ON
PMP_MOTOR	ON

NOTE:

To protect the DSC HU/CM, the solenoid valve used for simulations and the ABS motor stay on for 10 s each time they are switched on.

Send the command while attempting to rotate the wheel being inspected.
When pressure is being maintained, and a click sound indicating the solenoid is operating comes from the DSC HU/CM, confirm that the wheel does not rotate.
- Performing the inspections above determines the following.
  - The DSC HU/CM brake lines are normal
  - The DSC HU/CM hydraulic system is not significantly abnormal
  - The DSC HU/CM wiring is normal
  - Output system harness in DSC HU/CM (solenoid, relay) are normal
- However, the following items cannot be checked.
  - The DSC HU/CM input system harness and parts
  - Extremely small leaks in the DSC HU/CM internal hydraulic system
  - Unusual intermittent occurrences in the above items