Code No. U142B: EPS Data 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.
  • Whenever the ECU is replaced, ensure that the CAN bus lines are normal.

OPERATION


AWC-ECU communicates with the EPS-ECU via the CAN bus lines.

DIAGNOSIS CODE SET CONDITIONS


This diagnosis code will be set when abnormality is detected in the signal received from the EPS-ECU.

PROBABLE CAUSES



DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III CAN bus diagnostics.
Use M.U.T.-III to perform the CAN bus diagnosis.

Q. Is the check result normal?
Go to Step 2.
Repair the CAN bus lines. (Refer to GROUP 54C - Troubleshooting). After repairing the CAN bus line, go to Step 2.

STEP 2. M.U.T.-III diagnosis code.
Check the EPS diagnosis code. (Refer to GROUP 37 - Troubleshooting EPS).

Q. Is the diagnosis code set?
Perform the relevant troubleshooting.
Go to Step 3.

STEP 3. Check whether the diagnosis code is set again.

Q. Is diagnosis code No.U142B set?
Replace the AWC-ECU. (Refer to ). Then go to Step 4.
Intermittent malfunction. (Refer to GROUP 00 - How to Cope with Intermittent Malfunction).

STEP 4. Check whether the diagnosis code is set again.

Q. Is diagnosis code No.U0142B set?
Return to Step 1.
This diagnosis is complete.