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Home >> Acura >> 2016 >> MDX Base >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Electric Parking Brake - DTC Diagnostics (Except Hybrid) >> DTC Troubleshooting >> DTC C1110-12, C1111-12

DTC C1110-12, C1111-12

DTC C1110-12  : Left-Rear Electric Parking Brake Actuator Circuit Short to Power

DTC C1111-12  : Right-Rear Electric Parking Brake Actuator Circuit Short to Power

NOTE: Before you troubleshoot, review the general troubleshooting information .

DTC Description DTC
C1110-12 Left-Rear Electric Parking Brake Actuator Circuit Short to Power  
C1111-12 Right-Rear Electric Parking Brake Actuator Circuit Short to Power  

DTC (Electric parking brake)

  1. Problem verification

    - 1. Turn the vehicle to the ON mode.

    - 2. Clear the DTC with the HDS.

    - 3. Turn the vehicle to the OFF (LOCK) mode, then to the ON mode.

    - 4. Apply the parking brake, then press the brake pedal and release the parking brake.

    - 5. Check for DTCs with the HDS.

    DTC Description DTC
    C1110-12 Left-Rear Electric Parking Brake Actuator Circuit Short to Power  
    C1111-12 Right-Rear Electric Parking Brake Actuator Circuit Short to Power  

    Is DTC C1110-12 or C1111-12 indicated?

    YES 

    The failure is duplicated. Go to step 2.

    NO 

    Intermittent failure, the system is OK at this time. Refer to: intermittent failures troubleshooting .

  2. Shorted wire check (L EPB SET, R EPB SET lines to power)

    - 1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Disconnect the following connectors.

    Electric parking brake control unit 30P connector
    Appropriate electric parking brake actuator 2P connector

    - 3. Turn the vehicle to the ON mode

    - 4. Measure the voltage between test points 1 and 2.

    Test condition Vehicle ON mode
      Electric parking brake control unit 30P connector: disconnected
      Appropriate electric parking brake actuator 2P connector: disconnected
    Test circuit 1  
    Test point 1 Electric parking brake control unit 30P connector No. 2
    Test point 2 Body ground
    Test circuit 2  
    Test point 1 Electric parking brake control unit 30P connector No. 4
    Test point 2 Body ground

    Is there battery voltage?

    YES 

    Repair a short to power in the L EPB SET or R EPB SET wire between the electric parking brake control unit and the appropriate electric parking brake actuator.

    NO 

    Repair a short to power in the L EPB REL or R EPB REL wire between the electric parking brake control unit and the appropriate electric parking brake actuator.