LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 2021 >> CX-30 Turbo Premium >> Repair and Diagnosis >> External Pages >> Different car >> Section 73 (On-Board Diagnostics - Dynamic Stability Control System (DSC)) >> DTC U3000-4B: Abnormal DSC HU/Cm Temperature [DSC HU/Cm] >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2020 Mazda CX-30. However, it is still accessible from the selected car via links, so may be relevant.
Step Inspection Results Action
1 VERIFY IF DSC HU/CM TEMPERATURE WAS TEMPORARILY HIGH
  • Press down the electric parking brake switch, release the electric parking brake, and leave the vehicle for 30 min or more.
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the following procedure 3 times or more.
  • Pull up the electric parking brake switch to operate the electric parking brake.
    • Press down the electric parking brake switch to release the electric parking brake.
  • Perform the DTC inspection for the DSC HU/CM. (See DTC INSPECTION .)
  • Is the same Pending DTC present?
 Yes Go to the next step.
No System is normal. (Explain to the customer that the protection control was performed by repeatedly operating the electric parking brake.)
Repair completion verification 1 VERIFY THAT VEHICLE IS REPAIRED
  • Clear the DTC recorded in the memory. (See CLEARING DTC .)
  • Perform the following procedure 3 times or more.
  • Pull up the electric parking brake switch to operate the electric parking brake.
    • Press down the electric parking brake switch to release the electric parking brake.
  • Perform the DTC inspection for the DSC HU/CM. (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, perform the diagnosis from Step 1.
  • If the malfunction recurs, replace the DSC HU/CM, then go to the next step.

(See DSC HU/CM REMOVAL/INSTALLATION [L.H.D. (US)] .)
No Go to the next step.
Repair completion verification 2 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.
scientia non olet · About LEMON Manuals