Code No.C2002: Valve calibration not completed


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 - CAN Bus Diagnostics Table ).
  • Whenever ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION
Perform the master cylinder pressure sensor calibration to store the calibrated value in the ASC-ECU. At the same time, the calibrated value of cut valve and inlet valve are stored.

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set when the calibrated values for cut valve and inlet valve stored in ASC-ECU are not within the predetermined range.

PROBABLE CAUSES

  • ASC-ECU malfunction
  • Noise interference

DIAGNOSTIC PROCEDURE

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

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

STEP 2. Brake fluid pressure sensor calibration
Perform calibration of brake fluid pressure sensor calibration (Refer to ).

Q. Has the calibration succeeded?
Go to Step 3
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ), and then go to Step 4.

STEP 3. diagnosis code recheck after resetting CAN bus lines
Erase the diagnosis code.

Q. Is diagnosis code C2002 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ). Then go to Step 4.
The procedure is complete.

STEP 4. Check whether the diagnosis code is reset.
Erase the diagnosis code.

Q. Is diagnosis code C2002 set?
Return to Step 1.
The procedure is complete.