The ABS solenoid relay and solenoid valves are built into the brake actuator assembly.
The front solenoid valve LH controls the brake fluid pressure of the front wheel cylinder LH 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 |
|---|---|---|---|---|---|---|
| C12A512 | Left 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 | ·
SAE Code: C12A8 ·
Output ECU: Skid control ECU (brake actuator assembly) |
| C12A514 | Left 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 | ·
SAE Code: C12A7 ·
Output ECU: Skid control ECU (brake actuator assembly) |
| C12A51C | Left Front Wheel ABS Hold Solenoid Control Circuit Voltage Out of Range | ·
A current leak in the solenoid circuit is detected during the self-test. ·
The solenoid operation request signal and solenoid operation feedback signal do not match for a certain period of time. |
Skid control ECU (brake actuator assembly) | Comes on | Brake/EPB | ·
SAE Code: C12A6 (Case 1 to 4) ·
Output ECU: Skid control ECU (brake actuator assembly) |
| C12A51E | Left 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 | ·
SAE Code: C12A6 (Case 5) ·
Output ECU: Skid control ECU (brake actuator assembly) |
| C12A549 | Left 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 | ·
SAE Code: C12A5 ·
Output ECU: Skid control ECU (brake actuator assembly) |
| C12B012 | Left 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 | ·
SAE Code: C12B3 ·
Output ECU: Skid control ECU (brake actuator assembly) |
| C12B014 | Left 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 | ·
SAE Code: C12B2 ·
Output ECU: Skid control ECU (brake actuator assembly) |
| C12B01C | Left Front Wheel ABS Release Solenoid Control Circuit Voltage Out of Range | ·
A current leak in the solenoid circuit is detected during the self-test. ·
The solenoid operation request signal and solenoid operation feedback signal do not match for a certain period of time. |
Skid control ECU (brake actuator assembly) | Comes on | Brake/EPB | ·
SAE Code: C12B1 (Case 1 to 4) ·
Output ECU: Skid control ECU (brake actuator assembly) |
| C12B01E | Left 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 | ·
SAE Code: C12B1 (Case 5) ·
Output ECU: Skid control ECU (brake actuator assembly) |
| C12B049 | Left 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 | ·
SAE Code: C12B0 ·
Output ECU: Skid control ECU (brake actuator assembly) |
When performing the normal judgment procedure, make sure that the driver door is closed and is not opened at any time during the procedure.
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. [*]
[*]: 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.
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.
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