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Home >> Mazda >> 2023 >> CX-5 Turbo >> Repair and Diagnosis >> Brakes >> Parking Brake System >> On-Board Diagnostic - Electric Parking Brake >> DTC C2006-07: Mechanical Problem Of Electric Parking Brake Motor Gear Unit (LH) [Electric Parking Brake Control Module] >> Diagnostic Procedure

Diagnostic Procedure

DTC C2006:07 (ELECTRIC PARKING BRAKE CONTROL MODULE) DIAGNOSTIC PROCEDURE

Step Inspection Results Action
1 INSPECT ELECTRIC PARKING BRAKE MOTOR GEAR UNIT (LH) CONNECTOR CONDITION 
  • Switch the ignition off.
  • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION .)
  • Disconnect the electric parking brake motor gear unit (LH) connector.
  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
  • Is the connector normal?
 Yes Go to the next step.
No Repair or replace the connector, then go to Step 5.
2 INSPECT ELECTRIC PARKING BRAKE CONTROL MODULE CONNECTOR CONDITION 
  • Disconnect the electric parking brake control module connector.
  • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection.
  • Is the connector normal?
 Yes Go to the next step.
No Repair or replace the connector, then go to Step 5.
3 INSPECT ELECTRIC PARKING BRAKE MOTOR GEAR UNIT (LH) CIRCUIT FOR OPEN CIRCUIT 
  • Verify that the electric parking brake motor gear unit (LH) and electric parking brake control module connectors are disconnected.
  • Inspect for continuity between the following terminals (wiring harness-side):
    • Electric parking brake motor gear unit (LH) terminal A-Electric parking brake control module terminal 1U
    • Electric parking brake motor gear unit (LH) terminal B-Electric parking brake control module terminal 1Z
  • Is there continuity?
 Yes Go to the next step.
No Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
  • Electric parking brake motor gear unit (LH) terminal A-Electric parking brake control module terminal 1U
  • Electric parking brake motor gear unit (LH) terminal B-Electric parking brake control module terminal 1Z

If there is a common connector: 
  • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
  • Repair or replace the malfunctioning part.

If there is no common connector: 
  • Repair or replace the wiring harness which has an open circuit.

Go to Step 5.
4 VERIFY IF MALFUNCTIONING LOCATION IS ELECTRIC PARKING BRAKE MOTOR GEAR UNIT (LH) DEPENDING ON REPEATABILITY  Yes Replace the electric parking brake motor gear unit (LH), then go to the next step. (See ELECTRIC PARKING BRAKE MOTOR GEAR UNIT REMOVAL/INSTALLATION .)
No Go to Step 6.
5 VERIFY THAT REPAIRS HAVE BEEN COMPLETED  Yes Repeat the inspection from Step 1.
Go to the next step.
No Go to the next step.
6 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 CONTROL MODULE] .)
No DTC troubleshooting completed.
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