ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C1245

DTC Code DTC Name
C1245 Deceleration Sensor

DESCRIPTION

The parking brake ECU assembly receives vehicle tilt information from the deceleration sensor (yaw rate sensor) via CAN communication.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
C1245 Deceleration Sensor

    Detection Condition 1:

  • Diagnosis Condition:

    Engine switch on (IG)

  • Malfunction Status:

    Malfunction signal input from deceleration sensor

  • Malfunction Duration:

    Approximately 0.3 seconds


    Detection Condition 2:

  • Diagnosis Condition:

    From when the vehicle speed is 30 km/h (19 mph) or more until just before the vehicle stops (exceeds 0 km/h (0 mph), but below 1 km/h (1 mph))

  • Malfunction Status:

    The difference between the maximum and minimum value of the deceleration sensor is less than 0.288 m/s2

  • Malfunction Duration:

    The malfunction status repeats 16 times


    Detection Condition 3:

  • Diagnosis Condition:

    Driving at a vehicle speed of 1 km/h (1 mph) or more

  • Malfunction Status:

    The difference between the output values for deceleration sensor 1 and 2 is 5.884 m/s2or more

  • Malfunction Duration:

    60 seconds

 Deceleration sensor (Yaw rate sensor) Yes An electric parking brake system malfunction is displayed on the multi-information display.
DTC Detection Condition Combination Table: C1245
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3
Diagnosis Condition Engine switch on (IG) ○ - -
From when the vehicle speed is 30 km/h (19 mph) or more until just before the vehicle stops (exceeds 0 km/h (0 mph), but below 1 km/h (1 mph)) - ○ -
Driving at a vehicle speed of 1 km/h (1 mph) or more - - ○
Malfunction Status Malfunction signal input from deceleration sensor ○ - -

The difference between the maximum and minimum value of the deceleration sensor is less than 0.288 m/s2

- ○ -

The difference between the output values for deceleration sensor 1 and 2 is 5.884 m/s2or more

 - - ○
Detection Time Approximately 0.3 seconds Repeats 16 times 60 seconds
Trip Count 1 trip 1 trip 1 trip

Tech Tips

If the conditions match either of these patterns, a DTC will be output.

CAUTION / NOTICE / HINT

Note

When replacing the yaw rate sensor, perform calibration, initialization or registration.

Click here

PROCEDURE


  1. CHECK DTC (BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS)


    1. Check for DTC.

      Click here


      Chassis > ABS/VSC/TRC > Trouble Codes
      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    B

    GO TO BRAKE CONTROL / DYNAMIC CONTROL SYSTEMS Click here

    A

  2. CHECK DTC (ELECTRIC PARKING BRAKE SYSTEM)


    1. Clear the DTC.

      Click here


      Chassis > Electric Parking Brake > Clear DTCs

    2. Turn the engine switch off.

    3. Check for DTC.

      Click here


      Chassis > Electric Parking Brake > Trouble Codes
      Result
      Result Proceed to
      DTC is output A
      DTC is not output B

    A

    REPLACE YAW RATE SENSOR Click here

    B

    USE SIMULATION METHOD TO CHECK Click here