Code No. C1364 Brake fluid pressure sensor malfunction


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
ASC-ECU incorporates the brake fluid pressure sensor and monitors the brake fluid pressure.

DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set in the following cases:

  • Pressure sensor power supply voltage malfunction
  • Pressure sensor signal malfunction
  • The initial operation check, which is performed when the power is supplied to ASC-ECU, is not carried out normally.

PROBABLE CAUSES
ASC-ECU malfunction

DIAGNOSIS 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. Diagnosis code recheck after resetting CAN bus lines
Erase the diagnosis code.

Q. Is the diagnosis code No.C1364 set?
Replace the hydraulic unit (integrated with ASC-ECU) (Refer to ). Then go to Step 3.
Intermittent malfunction (Refer to GROUP 00 - How to Use Troubleshooting/How to Cope with Intermittent Malfunctions ).

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

Q. Is the diagnosis code No.C1364 set?
Return to Step 1.
This diagnosis is complete.




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