Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Brake Pressure Control Solenoid "A" Control Circuit Short to Battery (C13C012,...,C13C949)

Toyota Corolla Cross (2022-2024) Service Manual / Brake / Brake Control / Dynamic Control Systems / Electronically Controlled Brake System (for Hev Model) / Brake Pressure Control Solenoid "A" Control Circuit Short to Battery (C13C012,...,C13C949)

DESCRIPTION

The ABS solenoid relay and master cylinder cut solenoid valves are built into the brake actuator assembly.

Depending on the operating conditions, the master cylinder cut solenoid valves regulate the brake fluid pressure generated by the pump motor.

When this DTC is stored, the fail-safe function operates and the ABS solenoid relay is turned off to prevent the master cylinder cut solenoid valves from operating.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

MIL

DTC Output from

Note

C13C012

Brake Pressure Control Solenoid "A" Control Circuit Short to Battery

A short to +B in the master cylinder cut solenoid circuit is detected during the self-test.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13C3
  • Output ECU: Skid control ECU (brake actuator assembly)

C13C014

Brake Pressure Control Solenoid "A" Control Circuit Short to Ground or Open

An open or short in the master cylinder cut solenoid circuit is detected during the self-test.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13C2
  • Output ECU: Skid control ECU (brake actuator assembly)

C13C01C

Brake Pressure Control Solenoid "A" Control Circuit Voltage Out of Range
  • A current leak in the master cylinder cut solenoid circuit is detected during the self-test.
  • The master cylinder cut solenoid valve operation request signal and master cylinder cut solenoid valve operation feedback signal do not match for a certain period of time.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13C1 (Case 1 to 4)
  • Output ECU: Skid control ECU (brake actuator assembly)

C13C01E

Brake Pressure Control Solenoid "A" Control Circuit Resistance Out of Range

An abnormal resistance in the master cylinder cut solenoid circuit is detected during the self-test.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13C1 (Case 5)
  • Output ECU: Skid control ECU (brake actuator assembly)

C13C049

Brake Pressure Control Solenoid "A" Control Internal Electronic Failure

An internal malfunction in the master cylinder cut solenoid circuit is detected during the self-test.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13C0
  • Output ECU: Skid control ECU (brake actuator assembly)

C13C912

Brake Pressure Control Solenoid "B" Control Circuit Short to Battery

A short to +B in the master cylinder cut solenoid circuit is detected during the self-test.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13CC
  • Output ECU: Skid control ECU (brake actuator assembly)

C13C914

Brake Pressure Control Solenoid "B" Control Circuit Short to Ground or Open

An open or short in the master cylinder cut solenoid circuit is detected during the self-test.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13CB
  • Output ECU: Skid control ECU (brake actuator assembly)

C13C91C

Brake Pressure Control Solenoid "B" Control Circuit Voltage Out of Range
  • A current leak in the master cylinder cut solenoid circuit is detected during the self-test.
  • The master cylinder cut solenoid valve operation request signal and master cylinder cut solenoid valve operation feedback signal do not match for a certain period of time.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13CA (Case 1 to 4)
  • Output ECU: Skid control ECU (brake actuator assembly)

C13C91E

Brake Pressure Control Solenoid "B" Control Circuit Resistance Out of Range

An abnormal resistance in the master cylinder cut solenoid circuit is detected during the self-test.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13CA (Case 5)
  • Output ECU: Skid control ECU (brake actuator assembly)

C13C949

Brake Pressure Control Solenoid "B" Control Internal Electronic Failure

An internal malfunction in the master cylinder cut solenoid circuit is detected during the self-test.

Skid control ECU (brake actuator assembly)

Comes on

Brake/EPB
  • SAE Code: C13C9
  • Output ECU: Skid control ECU (brake actuator assembly)

MONITOR DESCRIPTION

C13C0 and C13C9:
  • When the self-diagnosis function detects a master cylinder cut solenoid internal malfunction when the master cylinder cut solenoid is not operating, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
C13C1 (Case 1) and C13CA (Case 1):
  • When it is detected by the self-diagnosis function that the feedback value from the master cylinder cut solenoid drive circuit does not match the operation request value, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
C13C1 (Case 2) and C13CA (Case 2):
  • When the downstream voltage of the master cylinder cut solenoid or the current flowing in the master cylinder cut solenoid is less than a certain value, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
C13C1 (Case 3) and C13CA (Case 3):
  • When the master cylinder cut solenoid is not operating and the current flowing in the master cylinder cut solenoid exceeds a certain value (current leak is detected), the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
C13C1 (Case 4) and C13CA (Case 4):
  • If the current flowing in the master cylinder cut solenoid circuit, circuit temperature, or voltage drop within the circuit is a certain value or more, the skid control ECU (brake actuator assembly) judges that there is a master cylinder cut solenoid overcurrent malfunction and illuminates the MIL and stores this DTC.
C13C1 (Case 5) and C13CA (Case 5):
  • If the master cylinder cut solenoid is not operating and the resistance value of the master cylinder cut solenoid is outside of a certain range, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
C13C2 and C13CB:
  • If the current, voltage or temperature of the master cylinder cut solenoid circuit is less than or exceeds a certain value, or the operation request value and feedback value deviate by a certain value or more, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
C13C3 and C13CC:
  • When it is detected by the self-diagnosis function that there is a short to +B in the master cylinder cut solenoid circuit, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.

MONITOR STRATEGY

Related DTCs

C13C0: Cyclic valve test for SM1 (built in self-test)

C13C1 (Case 1): Valve feedback monitoring for SM1 (PWM check)

C13C1 (Case 2): Valve feedback monitoring for SM1 (valve-coil path interruption)

C13C1 (Case 3): Cyclic valve test (current leakage test) for SM1

C13C1 (Case 4): Valve feedback monitoring for SM1 (general application specific integrated circuit valve driver failure)

C13C1 (Case 5): Cyclic valve test (valve resistance check) for SM1

C13C2: Cyclic valve test (silent valve driver test) for SM1

C13C3: Cyclic valve test (valve actuation register test) for SM1

C13C9: Cyclic valve test for SM2 (built in self-test)

C13CA (Case 1): Valve feedback monitoring for SM2 (PWM check)

C13CA (Case 2): Valve feedback monitoring for SM2 (valve-coil path interruption)

C13CA (Case 3): Cyclic valve test (current leakage test) for SM2

C13CA (Case 4): Valve feedback monitoring for SM2 (general application specific integrated circuit valve driver failure)

C13CA (Case 5): Cyclic valve test (valve resistance check) for SM2

C13CB: Cyclic valve test (silent valve driver test) for SM2

C13CC: Cyclic valve test (valve actuation register test) for SM2

Required Sensors/Components(Main)

Skid control ECU (brake actuator assembly)

Required Sensors/Components(Related)

Skid control ECU (brake actuator assembly)

Frequency of Operation

During initial checking

Duration

-: C13C0, C13C1 (Case 3 and 5), C13C2, C13C3, C13C9, C13CA (Case 3 and 5), C13CB and C13CC

0.03 seconds: C13C1 (Case 1, 2 and 4), C13CA (Case 1, 2 and 4)

MIL Operation

Immediately

Sequence of Operation

None

TYPICAL ENABLING CONDITIONS

Monitor runs whenever the following DTCs are not stored

TMC's intellectual property

Other conditions belong to TMC's intellectual property

-

TYPICAL MALFUNCTION THRESHOLDS

TMC's intellectual property

-

COMPONENT OPERATING RANGE

TMC's intellectual property

-

CONFIRMATION DRIVING PATTERN

NOTICE:

When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.

HINT:

  • After repair has been completed, clear the DTC and then check that the vehicle has returned to normal by performing the following All Readiness check procedure.
  • When clearing the permanent DTCs, refer to the "CLEAR PERMANENT DTC" procedure.
  1. Connect the GTS to the DLC3.
  2. Turn the ignition switch to ON and turn the GTS on.
  3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
  4. Turn the ignition switch off.
  5. Turn the ignition switch to ON (READY) and turn the GTS on.
  6. Wait for 1 second or more. [*]

    HINT:

    [*]: Normal judgment procedure.

    The normal judgment procedure is used to complete DTC judgment and also used when clearing permanent DTCs.

  7. Enter the following menus: Chassis / Brake/EPB* / Utility / All Readiness.

    *: Electric Parking Brake System

  8. Check the DTC judgment result.

    HINT:

    • If the judgment result shows NORMAL, the system is normal.
    • If the judgment result shows ABNORMAL, the system has a malfunction.
    • If the judgment result shows INCOMPLETE, perform driving pattern again.

PROCEDURE

1.

REPLACE BRAKE ACTUATOR ASSEMBLY

Click here

NEXT

END

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