Dynamic Stability Control: Other Mazda 3 BL

Preparation

1. Verify that the battery is fully charged.
2. Turn the ignition switch to the ON position and verify that the ABS warning light goes out after approx. 3.0 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 28

1. Perform " «PREPARATION»(ref-345278-S18010997922009102000000) ".
2. Connect the M-MDS to the DLC-2.
3. Set up an active command mode inspection according to the combination of commands below. (See «ON-BOARD DIAGNOSIS [DYNAMIC STABILITY CONTROL (DSC)]»(ref-345277-S06207214382009102000000) .) Brake pressure retention BRAKE PRESSURE RETENTION Command name Inspected wheels LF RF LR RR LF_TC_PRV OFF RF_TC_PRV LF_TC_SWV RF_TC_SWV LF-NLET ON OFF OFF OFF LF_OUTLET OFF LR_INLET ON LR_OUTLET OFF RF_NLET ON RF_OUTLET OFF RR_INLET ON RR_OUTLET OFF PMP_MOTOR Brake pressure reduction BRAKE PRESSURE RETENTION Command name Inspected wheels LF RF LR RR LF_TC_PRV OFF RF_TC_PRV LF_TC_SWV RF_TC_SWV LF_NLET ON OFF OFF OFF LR_OUTLET LR_NLET OFF ON LR_OUTLET RF_INLET ON OFF RF_OUTLET RR_INLET OFF ON RR_OUTLET PMP_MOTOR ON 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. NOTE: When working with two people, one should press on the brake pedal, 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. When brake pressure is maintained and a DSC HU/CM operation click sound is heard, confirm that the wheel does not rotate. When brake pressure is being reduced and a 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 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

COMBINED SENSOR INITIALIZATION PROCEDURE

1. Inspect the wheel alignment and the tire pressure. If there is any malfunction, adjust the applicable part.
2. Position the vehicle on level ground.
3. Turn the ignition switch off.
4. Connect the M-MDS to the DLC-2.
5. After the vehicle is identified, select the following items from the initial screen of the M-MDS. When using the IDS (laptop PC) Select "Chassis". Select "ABS/DSC". Select "Sensor Initialization". When using the PDS (Pocket PC) Select "Module Tests". Select "ABS". Select "DataLogger". Select "LATACCEL".
6. Perform the initialization procedure according to the directions on the screen.
7. Drive the vehicle.
8. After 5 min or more of driving, verify that the DSC system is normal.

Scheme 29

1. Remove the lower panel. (See «LOWER PANEL REMOVAL/INSTALLATION»(ref-345251-S05584420032009102000000) .)
2. While squeezing the tabs of the DSC OFF switch, pull the DSC OFF switch outward to remove it from the lower panel.
3. Install in the reverse order of removal.

Scheme 30

Scheme 31

1. Remove the DSC OFF switch. (See «DSC OFF SWITCH REMOVAL/INSTALLATION»(ref-345278-S14989442962009102000000) ).
2. Verify that the continuity is as indicated in the table. If not as indicated in the table, replace the DSC OFF switch.