Code No. C2111 Sensor Power Supply Circuit (Low input)
Code No. C2112 Sensor Power Supply Circuit (High input)


caution If there is any problem in the CAN bus lines, an incorrect diagnosis code may be set. Prior to this diagnosis, diagnose the CAN bus lines (Refer to GROUP 54C, Trouble code diagnosis ).

OPERATION
When the brake pedal is depressed, the brake fluid pressure sensor integrated in the hydraulic unit detects the brake fluid pressure applied from the master cylinder, converts the pressure value into voltage signal, and outputs it.

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set when the voltage applied to the pressure sensor is not within the standard value range.

PROBABLE CAUSES
ABS-ECU malfunction

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnosis
Use M.U.T.-III to diagnose the CAN bus lines.

Q. Is the check result normal?
Go to Step 3.
Repair the CAN bus lines (Refer to GROUP 54C - CAN Bus Diagnosis table ). On completion, go to Step 2.

STEP 2. Diagnosis code recheck after resetting CAN bus lines

Q. Are the diagnosis codes C2111 and C2112 set?
Go to Step 3.
This diagnosis is complete.

STEP 3. Battery check
Refer to GROUP 54A - Battery Test .

Q. Is the battery in good condition?
Go to Step 4.
Charge or replace the battery.

STEP 4. Charging system check
Refer to GROUP 16 - Charging System .

Q. Is the charging system in good condition?
Go to Step 5.
Repair or replace the charging system component(s).

STEP 5. Check whether the diagnosis code is reset.

Q. Are the diagnosis codes C2111 and C2112 set?
Replace the ABS-ECU.
This diagnosis is complete.