Dynamic Stability Control: Other Mazda CX-7 I

Preparation

1. Verify that battery is fully charged.
2. Turn the ignition switch to the ON position, and verify that the ABS warning light goes out after approx. 3 s.
3. Turn the ignition switch off.
4. Jack up the vehicle and support it evenly on safety stands.
5. Shift to the N position.
6. Verify that all four wheels rotate.
7. Rotate the inspected wheels by hand, and verify there is no brake drag. If there is any brake drag, perform regular brake inspection. If there is no brake drag, perform DSC HU/CM operation inspection.

Scheme 42

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 Command name Inspected wheels LF RF LR RR V_TRC_L OFF V_TRC_R V_STB_L V_STB_R LF_INLET ON OFF OFF OFF LF_OUTLET OFF LR_INLET ON LR_OUTLET OFF RF_INLET ON RF_OUTLET OFF RR_INLET ON RR_OUTLET OFF PMP_MOTOR BRAKE PRESSURE REDUCTION Command name Inspected wheels LF RF LR RR V_TRC_L OFF V_TRC_R V_STB_L V_STB_R LF_INLET ON OFF OFF OFF LF_OUTLET LR_INLET OFF ON LR_OUTLET RF_INLET ON OFF RF_OUTLET RR_INLET OFF ON RR_OUTLET PMP_MOTOR ON 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. NOTE: When working with two people, one should press on the brake pedal, and the other should attempt to rotate the wheel being inspected.
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 HU/CM operation click sound is heard, confirm that the wheel does not rotate. While brake pressure is being reduced and an DSC HU/CM operation click sound is heard, confirm that the wheel rotates. 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

COMBINED SENSOR INITIALIZATION PROCEDURE

Scheme 43

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) Select "Chassis". Select "ABS/DSC". When using the PDS (pocket PC) Select "All Tests and Calibrations". 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. Select "YAWRATE". 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.

Scheme 44

Scheme 45

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) Select the "Toolbox" tab. Select "DataLogger". Select "Module". Select "ABS". When using the PDS (pocket PC) Select "Module Tests". Select "ABS". 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.

Scheme 46

1. Remove in the order indicated in the figure.
2. Install in the reverse order of removal.