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Home >> Mazda >> 2023 >> 3 Select, 4D Hatchback >> Repair and Diagnosis (Single Page) >> Brakes >> Traction Control >> On-Board Diagnostic - Dynamic Stability Control (1 Of 2) >> DTC C1034-48: DSC HU/Control Module (Internal Malfunction) [DSC HU/Control Module] >> Diagnostic Procedure
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Diagnostic Procedure

DTC C1034:48 (DSC HU/Control Module) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 INSPECT DSC HU/Control Module FOR MALFUNCTION DEPENDING ON REPEATABILITY 
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the DTC inspection for the DSC HU/Control Module. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Refer to the CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW to inspect for a CAN communication error.
(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(US)] .)
If the CAN communication is normal, replace the DSC HU/Control Module and perform the repair completion verification.
(See DSC HU/Control Module REMOVAL/INSTALLATION [L.H.D. (US)] .)
No System is normal. (Explain to the customer that a DTC was displayed because the EPB switch was operated while driving.)
Perform the repair completion verification.
Repair completion verification VERIFY IF OTHER DTCs DISPLAYED 
  • Perform the DTC inspection. (See DTC INSPECTION .)
  • Are any DTCs displayed?
 Yes Repair the malfunctioning location according to the applicable DTC troubleshooting.
No DTC troubleshooting completed.
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