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HOMESERVICE MANUALSMAZDA20132 TOURING, 1.5L ENG VIN Z, AUTOMATIC TRANSREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLSYMPTOM TROUBLESHOOTING [DYNAMIC STABILITY CONTROL SYSTEM]PRECAUTION [DYNAMIC STABILITY CONTROL (DSC)]NOTES
2013 Mazda 2 Touring, 1.5L Eng VIN Z, Automatic Trans

Precaution [Dynamic Stability Control (DSC)]: Notes

2013 Mazda 2 Touring, 1.5L Eng VIN Z, Automatic TransSECTION Notes
  1. The ABS warning light and/or brake system warning light and/or DSC indicator light illuminate even when the system is normal.
    Warning lights that may illuminate and/or flash Cases in which the light may illuminate Conditions in which the light will go out ABS, EBD, TCS and DSC control
    • ABS warning light
    • Brake system warning light ((1))
    • DSC indicator light
    		 When the front wheels are jacked up, struck, or placed on a chassis roller, and only the front wheel ABS wheel speed sensors are spun for 30 s or more.  After turning off the ignition once and then restarting the engine, the vehicle is driven at 10km/h {6.2 mph} or more  , and then normal operation is verified.
    • ABS: Cuts control
    • EBD: Cuts control
    • TCS: Cuts control
    • DSC: Cuts control
    Parking brake is not fully released while driving.
    Brake drag.
    Sudden acceleration/deceleration.
    Left/right or front/rear tires are different. (Size, radius, tire pressure, or wear is other than that listed on tire label).
    Battery voltage at the DSC HU/CM ignition terminal Y drops below approx. 8 V.  ((2)) Battery voltage rises above approx. 8 V. 
    • ABS: Cuts control
    • EBD: Cuts control
    • TCS: Cuts control
    • DSC: Cuts control
    Brake system warning light Brake fluid amount is low. Brake fluid level above recommended amount.
    • ABS: Enables control
    • EBD: Enables control
    • TCS: Enables control
    • DSC: Enables control
    (1) In case where the light may illuminate, only when the DSC HU/CM detects that a wheel-speed sensor determines that more than the two wheels are malfunctioning.
    (2) If the battery voltage drops below 8 V  while the vehicle speed is greater than 20 km/h {12 mph}  , the DSC HU/CM records the DTC U3003:16.
  2. Precautions during servicing of the DSC. The DSC is composed of electrical and mechanical parts. It is necessary to categorize malfunctions as being either electrical or hydraulic when performing troubleshooting.
    1. Malfunction in electrical system
      • The control module has an on-board diagnostic function. With this function, the ABS warning light and/or brake system warning light and/or DSC indicator light will illuminate when there is a problem in the electrical system.

        Also, past and present malfunctions are recorded in the control module. This function can find malfunctions that do not occur during periodic inspections. Connect the M-MDS to the DLC-2, then switch the ignition to ON. As a result, the stored malfunctions will be displayed on the M-MDS in numeric order by connecting the DLC-2. To find out the causes of the DSC malfunctions, use these onboard diagnostic results.

      • If a malfunction occurred in the past but is now normal, the cause is likely a temporary poor connection of the wiring harness.

        The control module usually operates normally. Be careful when searching for the cause of malfunction.

      • After repair, it is necessary to clear the DTC from the control module memory.

        Also, if the DSC related parts have been replaced, verify that the no DTC has been displayed after repairs.

      • After repairing the ABS wheel-speed sensor or ABS sensor rotor, or after replacing the control module, the ABS warning light may not go out even when the ignition is switched to ON. In this case, drive the vehicle at a speed of 10 km/h {6.2 mph} or more  , make sure the ABS warning light goes out, and then clear the DTC.
      • When repairing, if the DSC related connectors are disconnected and the ignition is switched to ON, the control module will mistakenly detect a fault and record it as a malfunction.
      • After repairing the SAS control module (yaw rate sensor or lateral acceleration sensor) or the steering angle sensor module (EPS control module), or after replacing the SAS control module, the DSC indicator light may not go out even when the ignition is switched to ON. In this case, drive the vehicle at a speed of 10 km/h {6.2 mph} or more  with going straight, make sure the DSC indicator light goes out, and then clear the DTC.
      CAUTION:
      • To protect the control module, make sure the ignition is switched off before connecting or disconnecting the control module connector.
    2. Malfunctions in hydraulic system
      • Symptoms in a hydraulic system malfunction are similar to those in a conventional brake malfunction. However, it is necessary to determine if the malfunction is in a DSC component or the conventional brake system.
      • The hydraulic unit contains delicate mechanical parts. If foreign material enters the component, the DSC may fail to operate. Also, it will likely become extremely difficult to find the location of the malfunction in the event that the brakes operate but the DSC does not. Make sure foreign materials does not enter when servicing the DSC (e.g. brake fluid replacement, pipe removal).
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.