Mazda CX-9 Grand Touring. Manual — part 175
Fig. 3: Connecting M-MDS To DLC-2
Courtesy of MAZDA MOTORS CORP.
Brake pressure retention
BRAKE PRESSURE RETENTION REFERENCE CHART
Brake pressure reduction
BRAKE PRESSURE RETENTION REFERENCE CHART
Command name
Inspected wheels
LF RF LR RR
V_TRC_L
OFF
V_TRC_R
V_STB_L
V_STB_R
V_LF_INL
ON
OFF
OFF
OFF
V_LF_OTL
OFF
V_LR_INL
ON
V_LR_OTL
OFF
V_RF_INL
ON
V_RF_OTL
OFF
V_RR_INL
ON
V_RR_OTL
OFF
PMP_MOTOR
OFF
2008 Mazda CX-9 Grand Touring
2008 BRAKES Dynamic Stability Control/Roll Stability Control - Mazda CX-9
Microsoft
Sunday, November 15, 2009 9:40:24 AM
Page 4
© 2005 Mitchell Repair Information Company, LLC.
4. Send the command while depressing on the brake pedal and attempting to rotate the wheel being
inspected.
5. While brake pressure is maintained and a DSC/RSC HU/CM operation click sound is heard, confirm that
the wheel does not rotate. While brake pressure is being reduced and an DSC/RSC HU/CM operation
click sound is heard, confirm that the wheel rotates.
Performing the inspection above determines the following:
The DSC/RSC HU/CM brake lines are normal.
The DSC/RSC HU/CM hydraulic system is not significantly abnormal (including DSC/RSC
HU/CM).
The DSC/RSC HU/CM internal electrical parts (solenoid, motor and other parts) are normal.
The DSC/RSC unit and DSC/RSC 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/RSC HU/CM input system wiring harnesses and parts
Extremely small leaks in the DSC/RSC HU/CM internal hydraulic system
DSC CONTROL INSPECTION
Command name
Inspected wheels
LF RF LR RR
V_TRC_L
OFF
V_TRC_R
V_STB_L
V_STB_R
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_1NL
OFF
ON
V_RR_OTL
PMP_MOTOR
ON
CAUTION:
To protect the DSC/RSC 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.
NOTE:
When working with two people, one should press on the brake pedal,
and the other should attempt to rotate the wheel being inspected.
2008 Mazda CX-9 Grand Touring
2008 BRAKES Dynamic Stability Control/Roll Stability Control - Mazda CX-9
Microsoft
Sunday, November 15, 2009 9:40:24 AM
Page 5
© 2005 Mitchell Repair Information Company, LLC.
1. Perform "Preparation".
2. Connect the M-MDS to the DLC-2.
3. Set up an active command mode inspection according to the combination of commands below.
BRAKE PRESSURE RETENTION REFERENCE CHART
4. Send the command while rotating the wheel being inspected by hand in a forward direction.
5. Confirm that the wheel does not rotate easily while a DSC/RSC HU/CM operation click sound is heard.
Performing the inspection above determines the following:
CAUTION:
To protect the DSC/RSC 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.
Fig. 4: Connecting M-MDS To DLC-2
Courtesy of MAZDA MOTORS CORP.
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
V_LF_INL
OFF
OFF
OFF
ON
V_LF_OTL
OFF
V_LR_INL
ON
V_LR_OTL
OFF
V_RF_INL
ON
V_RF_OTL
OFF
V_RR_INL
ON
V_RR_OTL
OFF
PMP_MOTOR
ON
2008 Mazda CX-9 Grand Touring
2008 BRAKES Dynamic Stability Control/Roll Stability Control - Mazda CX-9
Microsoft
Sunday, November 15, 2009 9:40:24 AM
Page 6
© 2005 Mitchell Repair Information Company, LLC.
The DSC/RSC HU/CM brake lines are normal.
The DSC/RSC HU/CM hydraulic system is not significantly abnormal (including DSC/RSC
HU/CM).
The DSC/RSC HU/CM internal electrical parts (solenoid, motor and other parts) are normal.
The DSC/RSC unit and DSC/RSC 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/RSC HU/CM input system wiring harnesses and parts
Extremely small leaks in the DSC/RSC HU/CM internal hydraulic system
DSC/RSC HU/CM REMOVAL/INSTALLATION
1. Remove the battery and battery tray. (See BATTERY REMOVAL/INSTALLATION [MZI-3.7] .)
2. Remove the battery tray bracket as shown in the figure.
3. Remove the windshield wiper arm and blade. (See WINDSHIELD WIPER ARM AND BLADE
REMOVAL/INSTALLATION .)
4. Remove the cowl grille. (See COWL GRILLE REMOVAL/INSTALLATION .)
5. Remove the wiper motor. (See WINDSHIELD WIPER MOTOR REMOVAL/INSTALLATION .)
6. Remove the cowl panel. (See COWL PANEL REMOVAL/INSTALLATION .)
WARNING:
If the DSC/RSC sensor initialization procedure is not completed, it
could result in an unexpected accident due to the DSC/RSC being
inoperative. Therefore, after the DSC/RSC HU/CM is replaced, always
perform the DSC/RSC sensor initialization procedure to ensure
proper DSC/RSC operation. (See DSC/RSC SENSOR INITIALIZATION
PROCEDURE.)
CAUTION:
The internal parts of the DSC/RSC HU/CM could be damaged if
dropped. Be careful not to drop the DSC/RSC HU/CM. Replace the
DSC/RSC HU/CM if it is subjected to an impact.
2008 Mazda CX-9 Grand Touring
2008 BRAKES Dynamic Stability Control/Roll Stability Control - Mazda CX-9
Microsoft
Sunday, November 15, 2009 9:40:24 AM
Page 7
© 2005 Mitchell Repair Information Company, LLC.
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