2018 / ECLIPSE CROSS / EC - Workshop Manual
35 -SERVICE BRAKES > 35C-ACTIVE STABILITY CONTROL SYSTEM (ASC) > TROUBLESHOOTING<ASC-ECU><ASC-ECU> > DIAGNOSIS CODE PROCEDURES > CODE NO. U1011 ACC/FCM Parity/Toggle bit error
Code No. U1011 ACC CAN Signal Error
| 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
 ). - If diagnosis code No.U1011 is set in ASC-ECU, always diagnose the CAN bus line. If there is any fault in the CAN bus lines, an incorrect diagnosis code may be set. In this case, the set diagnosis code is not highly reliable.
- Before replacing the ECU, ensure that the communication circuit is normal.
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OPERATION
ACC/FCM-related signals are sent or received to and from between ASC-ECU and ACC/FCM-ECU via CAN bus lines.
DIAGNOSIS CODE SET CONDITIONS
This diagnosis code is set when the ACC/FCM-ECU malfunction has been detected.
PROBABLE CAUSES
- Malfunction of ACC/FCM-ECU
- Malfunction of ASC-ECU
- External noise interference
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnosis
STEP 2. M.U.T.-IIISE diagnosis code
Use M.U.T.-IIISE to check that any diagnosis code other than code No.U1011 is set in ASC-ECU.Is the diagnosis code set?
Troubleshoot the relevant diagnosis code.
Go to Step 3.
STEP 3. M.U.T.-IIISE other system diagnosis code
STEP 4. Check whether the diagnosis code is set again.
