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Home >> Mazda >> 2017 >> CX-5 Grand Select, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 85 (On-Board Diagnostics [Electric Parking Brake]) >> DTC U3001-04: Electric Parking Brake Control Module Internal Malfunction >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2016 Mazda CX-5. However, it is still accessible from the selected car via links, so may be relevant.
Step Inspection Action
1 VERIFY IF THE ELECTRIC PARKING BRAKE WARNING LIGHT IS TURNED ON 
  • Verify if the electric parking brake warning light is turned on.
  • Is the electric parking brake warning light turned on?
 Yes Go to the next step.
No Replace the electric parking brake control module, then go to the next step.
(See ELECTRIC PARKING BRAKE CONTROL MODULE REMOVAL/INSTALLATION .)
2 VERIFY IF MALFUNCTIONING LOCATION IS ELECTRIC PARKING BRAKE CONTROL MODULE DEPENDING ON REPEATABILITY 
  • Clear the DTC for the electric parking brake control module using the M-MDS.

    (See CLEARING DTC [ELECTRIC PARKING BRAKE] .)

  • 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.
  • Retrieve the electric parking brake control module DTCs using the M-MDS.

    (See DTC INSPECTION [ELECTRIC PARKING BRAKE] .)

  • Is the same DTC displayed?
 Yes Replace the electric parking brake control module, then go to the next step.
(See ELECTRIC PARKING BRAKE CONTROL MODULE REMOVAL/INSTALLATION .)
No Go to the next step.
3 VERIFY IF OTHER DTCs DISPLAYED 
  • Are any other DTCs displayed?
 Yes Repair or replace the malfunctioning part according to the applicable DTC troubleshooting.
(See DTC TABLE [ELECTRIC PARKING BRAKE] .)
No DTC troubleshooting completed.
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