DTC C1288 [DSC/RSC]

id0402b3811400

DTC | C1288 | Brake fluid pressure sensor system
DETECTION CONDITION | • The pressure from the brake fluid pressure sensor when the system starts up is not within specification.
POSSIBLE CAUSE | • Open or short circuit in the brake fluid pressure sensor circuit in the DSC/RSC HU/CM • Brake fluid pressure sensor malfunction • DSC/RSC HU/CM malfunction • Conventional brake system malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | INSPECT CONVENTIONAL BRAKE SYSTEM • Inspect the conventional brake system for the following: ― Normal master cylinder operation ― Brake fluid leakage between the master cylinder and DSC/RSC HU/CM ― Normal brake switch operation • Is the conventional brake system normal? | Yes | Go to the next step.
No | Replace the malfunctioning part, then go to the next step.
2 | INSPECT BRAKE FLUID PRESSURE SENSOR • Inspect the brake fluid pressure sensor. (See BRAKE FLUID PRESSURE SENSOR INSPECTION.) • Is the brake fluid pressure sensor normal? | Yes | Go to the next step.
No | Replace the DSC/RSC HU/CM, then go to the next step. (See DSC/RSC HU/CM REMOVAL/INSTALLATION [L.H.D.].) (See DSC/RSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)
3 | VERIFY NO ABNORMALITY ON BRAKE FLUID PRESSURE SENSOR • Clear the DTCs from the memory. (See ON-BOARD DIAGNOSIS [DSC/RSC].) • Are the same DTCs present? | Yes | Replace the DSC/RSC HU/CM, then go to the next step. (See DSC/RSC HU/CM REMOVAL/INSTALLATION [L.H.D.].) (See DSC/RSC HU/CM REMOVAL/INSTALLATION [R.H.D.].)
No | Go to the next step.
4 | VERIFY THAT NO OTHER DTCS ARE PRESENT • Are any other DTCs output? | Yes | Go to the applicable DTC inspection. (See ON-BOARD DIAGNOSIS [DSC/RSC].)
No | DTC troubleshooting completed.