DSC Control Inspection

WARNING: This page is about a different car, the 2008 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

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)] .)

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.

REFERENCE CHART

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_NLET	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