Dynamic Stability Control System: Diagnosis Mazda 6 GG рестайлинг

DSC Control Inspection

1. Perform the "Preparation."
2. Connect WDS or equivalent to the DLC-2.
3. Set up an active command modes inspection according to the combination of commands below. Pressure retention PRESSURE RETENTION REFERENCE Command name Wheels Inhibition of understeer tendency control Inhibition of oversteer tendency control LF RF LR RR LF_TC_VLV ON OFF ON RF_TC_VLV OFF ON OFF LF_DSC_V OFF RF_DSC_V ABS_POWER ON LF_INLET OFF OFF OFF ON LF_OUTLET OFF LR_INLET ON LR_OUTLET OFF RF_INLET ON RF_OUTLET OFF RR_INLET ON RR_OUTLET ON PMP_MOTOR ON NOTE: To protect the DSC HU/CM, the solenoid valve used for simulations and the ABS motor stay on for 10 s each time they are switched on.
4. Send the command while attempting to rotate the wheel being inspected.
5. When pressure is being maintained, and a click sound indicating the solenoid is operating comes from the DSC HU/CM, confirm that the wheel does not rotate. Performing the inspections above determines the following. The DSC HU/CM brake lines are normal The DSC HU/CM hydraulic system is not significantly abnormal The DSC HU/CM wiring is normal Output system harness in DSC HU/CM (solenoid, relay) are normal However, the following items cannot be checked. The DSC HU/CM input system harness and parts Extremely small leaks in the DSC HU/CM internal hydraulic system Unusual intermittent occurrences in the above items

DSC HU/CM INSPECTION

1. Disconnect the DSC HU/CM connector.
2. Connect the negative battery cable.
3. Attach the tester lead to the DSC HU/CM wiring harness-side connector, then inspect the voltage, continuity, or resistance according to the standard (reference) on the table.

Scheme 39

TERMINAL VOLTAGE REFERENCE

FRONT/REAR ABS WHEEL-SPEED SENSOR INSPECTION

1. Inspect the front ABS wheel-speed sensor in the same order of vehicles with ABS. (See «FRONT/REAR ABS WHEEL-SPEED SENSOR INSPECTION.»(ref-244609-S31737126542006092500000) )

Scheme 40

1. Remove the tire house trim. (See «TIRE HOUSE TRIM REMOVAL/INSTALLATION.»(ref-244641-S23548003552006092500000) )
2. Remove in the order indicated in the table.
3. Install in the reverse order of removal.

COMBINED SENSOR INSPECTION

Scheme 41

Scheme 42

Scheme 43

1. Connect the connector.
2. Turn ignition switch on, verify the voltage between terminals B and ground terminal E under the following conditions. If not within the specification, replace the combined sensor. Horizontal Voltage 2.4-2.6 V Facing up (inclined 90° from horizontal) Voltage 3.3-3.7 V Facing down (declined 90° from horizontal) Voltage 1.3-1.7 V

Scheme 44

Scheme 45

1. Connect the connector.
2. Turn ignition switch on, verify the voltage between terminals D and ground terminal E under the following conditions. Measure combined sensor voltage under static condition. Voltage 2.3-2.7 V Measure voltage at output terminal D and ground terminal E when the combined sensor is rotated left and right. CAUTION: Be careful when turning the combined sensor rotation position while it is in a reversed state because the rotation direction and voltage will be reversed. Voltage Right rotation: fluctuation between 2.5-4.62 V Left rotation: fluctuation between 2.5-0.33 V

Scheme 46

Scheme 47

Scheme 48

1. Connect the connector.
2. Turn ignition switch on, verify the voltage between terminals A and ground terminal E under the following conditions. Horizontal Voltage 2.2-2.8 V Acceleration (inclined 90° from horizontal) Voltage 3.1-3.9 V Deceleration (decline 90° from horizontal) Voltage 1.2-1.8 V