Toyota Corolla Cross: Right Front Wheel ABS Hold Solenoid Control Circuit Short to Battery (C12BB12,...,C12C649)
DESCRIPTION
The ABS solenoid relay and solenoid valves are built into the brake actuator assembly.
The front solenoid valve RH controls the brake fluid pressure of the front wheel cylinder RH of the vehicle.
When this DTC is stored, the fail-safe function operates and the ABS solenoid relay is turned off to prevent the solenoid valves from operating.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
MIL |
DTC Output from |
Note |
|---|---|---|---|---|---|---|
|
C12BB12 |
Right Front Wheel ABS Hold Solenoid Control Circuit Short to Battery |
A short to +B in the solenoid circuit is detected during the self-test. |
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
|
C12BB14 |
Right Front Wheel ABS Hold Solenoid Control Circuit Short to Ground or Open |
An open or short in the solenoid circuit is detected during the self-test. |
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
|
C12BB1C |
Right Front Wheel ABS Hold Solenoid Control Circuit Voltage Out of Range |
|
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
|
C12BB1E |
Right Front Wheel ABS Hold Solenoid Control Circuit Resistance Out of Range |
An abnormal resistance in the solenoid circuit is detected during the self-test. |
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
|
C12BB49 |
Right Front Wheel ABS Hold Solenoid Control Internal Electronic Failure |
An internal malfunction in the solenoid circuit is detected during the self-test. |
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
|
C12C612 |
Right Front Wheel ABS Release Solenoid Control Circuit Short to Battery |
A short to +B in the solenoid circuit is detected during the self-test. |
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
|
C12C614 |
Right Front Wheel ABS Release Solenoid Control Circuit Short to Ground or Open |
An open or short in the solenoid circuit is detected during the self-test. |
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
|
C12C61C |
Right Front Wheel ABS Release Solenoid Control Circuit Voltage Out of Range |
|
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
|
C12C61E |
Right Front Wheel ABS Release Solenoid Control Circuit Resistance Out of Range |
An abnormal resistance in the solenoid circuit is detected during the self-test. |
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
|
C12C649 |
Right Front Wheel ABS Release Solenoid Control Internal Electronic Failure |
An internal malfunction in the solenoid circuit is detected during the self-test. |
Skid control ECU (brake actuator assembly) |
Comes on |
Brake/EPB |
|
MONITOR DESCRIPTION
C12BB and C12C6:- When the ABS solenoid is not operating and the self-diagnosis function detects that there is an internal malfunction in the ABS solenoid circuit, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
- When it is detected by the self-diagnosis function that the feedback value from the ABS solenoid drive circuit does not match the operation request value, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
- When the downstream voltage of the ABS solenoid or the current flowing in the ABS solenoid is less than a certain value, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
- When the ABS solenoid is not operating and the current flowing in the ABS solenoid exceeds a certain value (current leak is detected), the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
- If the current flowing in the ABS 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 an ABS solenoid overcurrent malfunction and illuminates the MIL and stores this DTC.
- If the ABS solenoid is not operating and the resistance value of the ABS solenoid is outside of a certain range, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
- If the current in the ABS solenoid circuit, voltage or temperature 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.
- When it is detected by the self-diagnosis function that there is a short to +B in the ABS solenoid circuit, the skid control ECU (brake actuator assembly) illuminates the MIL and stores this DTC.
MONITOR STRATEGY
|
Related DTCs |
C12BB: Cyclic valve test for SFRH (built in self-test) C12BC (Case 1): Valve feedback monitoring for SFRH (PWM check) C12BC (Case 2): Valve feedback monitoring for SFRH (valve-coil path interruption) C12BC (Case 3): Cyclic valve test (current leakage test) for SFRH C12BC (Case 4): Valve feedback monitoring for SFRH (general application specific integrated circuit valve driver failure) C12BC (Case 5): Cyclic valve test (valve resistance check) for SFRH C12BD: Cyclic valve test (silent valve driver test) for SFRH C12BE: Cyclic valve test (valve actuation register test) for SFRH C12C6: Cyclic valve test for SFRR (built in self-test) C12C7 (Case 1): Valve feedback monitoring for SFRR (PWM check) C12C7 (Case 2): Valve feedback monitoring for SFRR (valve-coil path interruption) C12C7 (Case 3): Cyclic valve test (current leakage test) for SFRR C12C7 (Case 4): Valve feedback monitoring for SFRR (general application specific integrated circuit valve driver failure) C12C7 (Case 5): Cyclic valve test (valve resistance check) for SFRR C12C8: Cyclic valve test (silent valve driver test) for SFRR C12C9: Cyclic valve test (valve actuation register test) for SFRR |
|
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 |
-: C12BB, C12BC (Case 3 and 5), C12BD, C12BE, C12C7 (Case 3 and 5), C12C8 and C12C9 0.03 seconds: C12BC (Case 1, 2 and 4), C12C7 (Case 1, 2 and 4) 20 seconds: C12C6 |
|
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.
- Connect the GTS to the DLC3.
- Turn the ignition switch to ON and turn the GTS on.
- Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure).
- Turn the ignition switch off.
- Turn the ignition switch to ON (READY) and turn the GTS on.
- 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.
- Enter the following menus: Chassis / Brake/EPB* / Utility / All Readiness.
*: Electric Parking Brake System
- 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 |
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END |
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