Mazda CX 7. Manual — part 221

DYNAMIC STABILITY CONTROL

04-15–15

04-15

Sensor Output Value Inspection

1. Turn the ignition switch off.
2. Connect the M-MDS to the DLC-2.
3. Select the following PIDs using the M-MDS:

• WSPD_LR

(LR ABS wheel-speed sensor)

• WSPD_RR

(RR ABS wheel-speed sensor)

4. Start the engine and drive the vehicle.
5. Verify that the display of the M-MDS shows the

same value as the speedometer.

• If there is any malfunction, replace the rear

ABS wheel-speed sensor.

End Of Sie

WM: COMBINED SENSOR

COMBINED SENSOR REMOVAL/INSTALLATION

id041500801200

Caution

• The internal parts of the combined sensor could be damaged if dropped. Be careful not to drop the

combined sensor. Replace the combined sensor if it is subjected to an impact. Also, do not use an
impact wrench or other similar air tools when removing/installing the sensor.

1. Remove the console panel. (See 09-17-15 CONSOLE PANEL REMOVAL/INSTALLATION.)
2. Remove the console. (See 09-17-13 CONSOLE REMOVAL/INSTALLATION.)
3. Remove in the order indicated in the table.

4. Install in the reverse order of removal.
5. After installation, perform the combined sensor

initialization procedure. (See 04-15-17
COMBINED SENSOR INITIALIZATION
PROCEDURE.)

End Of Sie

DLC-2

acxuuw00001204

1

Combined sensor connector

2

Nut

3

Combined sensor

7.8—12.8 N·m
{80—130 kgf·cm,
70—113 in·lbf}

3

1

A

2

A

acxuuw00001881

1871-1U-06B(04-15).fm 15 ページ ２００６年３月１５日 水曜日 午前１１時１６分

DYNAMIC STABILITY CONTROL

04-15–16

COMBINED SENSOR INSPECTION

id041500801300

1. Turn the ignition switch off.
2. Connect the M-MDS to the DLC-2.
3. Select the following PIDs, then inspect the lateral

acceleration speed and the yaw rate.

— LAT_ACCL: (lateral acceleration speed)

— YAW_RATE: (yaw rate)
(1) Lateral acceleration speed inspection

1) Verify the LAT_ACCL change when the

combined sensor is tilted to the left and
right.

• If there is any malfunction, replace the

combined sensor.

Standard

When the sensor is tilted to the right (A):

LAT_ACCL changes negatively.

When the sensor is tilted to the left (B):

LAT_ACCL changes positively.

(2) Yaw rate inspection

1) Verify the YAW_RATE change when the

combined sensor is rotated to the left and
right.

• If there is any malfunction, replace the

combined sensor.

Standard

When the sensor is rotated to the right (A):

YAW_RATE changes negatively.

When the sensor is rotated to the left (B):

YAW_RATE changes positively.

End Of Sie

DLC-2

acxuuw00001213

VEHICLE FRONT

A

B

acxuuw00001214

A

B

VEHICLE FRONT

acxuuw00001215

1871-1U-06B(04-15).fm 16 ページ ２００６年３月１５日 水曜日 午前１１時１６分

DYNAMIC STABILITY CONTROL

04-15–17

04-15

2007 Mazda CX-7 Workshop Manual (1871–1U–06B)

Revised 5/2006 (Ref. No. R044/06)

COMBINED SENSOR INITIALIZATION PROCEDURE

id041500801400

Warning

• Unless the initialization procedure of the combined sensor is completed, the DSC will not operate,

causing an unexpected accident. Therefore, always perform the initialization procedure to ensure
DSC operation if the combined sensor and DSC HU/CM have been removed or replaced.

1. Inspect the wheel alignment and inflation pressure.

• If there is any malfunction, adjust the applicable part.

2. Park the vehicle on level ground.
3. Turn the ignition switch off.
4. Connect the M-MDS to the DLC-2 connector.
5. After the vehicle is identified, select the following

items from the initial screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select “Chassis”.
2. Select “ABS/DSC”.

• When using the PDS (pocket PC)

1. Select “All Tests and Calibrations”.
2. Select “ABS/DSC”.

6. Then, select the “Sensor Initialization” from the

screen menu.

7. Then, select items from the screen menu in the

following order.

1. Select “YAWRATE”.
2. Select “LATACCEL”.

8. Perform the initialization according to the directions on the screen.
9. Drive the vehicle forward.

10. After 5 min of driving, verify that the DSC system is normal.

End Of Sie

WM: BRAKE FLUID PRESSURE SENSOR

BRAKE FLUID PRESSURE SENSOR INSPECTION

id041500801500

1. Turn the ignition switch off.
2. Install the SSTs to the master cylinder.

Note

• Install the SST (49 N043 001) to the master

cylinder using a commercially available flare
nut wrench.

— Flare nut across flat: 12 mm {0.47 in}

3. Bleed the air from the SSTs and the brake line.

(Bleed air from the SSTs) through air bleeding
valve A.

4. Connect the M-MDS to the DLC-2.
5. After the vehicle is identified, select the following

items from the initialization screen of the M-MDS.

• When using the IDS (notebook PC)

1. Select the “Toolbox” tab.
2. Select “DataLogger”.
3. Select “Module”.
4. Select “ABS”.

• When using the PDS (pocket PC)

1. Select “Module Tests”.
2. Select “ABS”.
3. Select “DataLogger”.

6. Select the “MCYLIP” PID.
7. Start the engine.
8. Depress the brake pedal, and confirm that the fluid pressure value of the SST (Gauge) and the value shown on

the M-MDS are equal

• If the fluid pressures are different, replace the DSC HU/CM.

End Of Sie

WM: TCS OFF SWITCH

DLC-2

acxuuw00001216

49 U043 005

49 N043 001

49 U043 006

49 U043 004A

A

acxuuw00001882

DLC-2

acxuuw00001218

DYNAMIC STABILITY CONTROL

04-15–18

2007 Mazda CX-7 Workshop Manual (1871–1U–06B)

TCS OFF SWITCH REMOVAL/INSTALLATION

id041500803000

1. Remove in the order indicated in the table.

2. Install in the reverse order of removal.

Switch Bezel Component Removal Note

1. Access the switch bezel component from behind of the dashboard, and squeeze the tabs of the switch bezel

component.

2. Remove the switch bezel component from the dashboard.

End Of Sie

TCS OFF SWITCH INSPECTION

id041500803100

1. Remove the TCS OFF switch. (See 04-15-18 TCS OFF SWITCH REMOVAL/INSTALLATION.)
2. Verify that the continuity is as indicated in the table.

• If not as indicated in the table, replace the

TCS OFF switch.

End Of Sie

1

Switch bezel component
(See 04-15-18 Switch Bezel Component Removal
Note.)

2

TCS OFF switch connector

3

TCS OFF switch

TAB

3

1

2

acxuuw00001779

F

E

A

C

A

B

C

D

F

E

acxuuw00001221

: Continuity

: Bulb

Condition

Switch pressed

Switch released

Terminal

C

F

A

E

acxuuw00001220