[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
23 -AUTOMATIC TRANSMISSION > 23A-CVT > TROUBLESHOOTING<S-AWC><S-AWC> > DIAGNOSIS CODE PROCEDURES > CODE NO. C1078 TYRE TURNING MALFUNCTION
Code No. C1078: Tyre Turning 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 receives the wheel speed data from ASC-ECU via the CAN communication.
 
 
DIAGNOSIS CODE SET CONDITIONS
The wheel speed is observed when the vehicle is driven straight ahead with the steering angle in the neutral position and if the wheel speed difference which is more than the specified value is continuously detected, this code is set.
 
 
PROBABLE CAUSES
  • Tyre with incorrect diameter equipped
  • Spare tyre installed
  • Improper tyre pressure
  • Malfunction of ASC-ECU
  • Malfunction of AWC-ECU

 
 
DIAGNOSIS PROCEDURE
STEP 1. M.U.T.-IIISE CAN bus diagnostics.
Use M.U.T.-IIISE to perform the CAN bus diagnosis.
Is the check result normal?
Go to Step 2.
Repair the CAN bus line (Refer to GROUP 54C - Troubleshooting ).
 
STEP 2. Check the tyres
Check that the wheels/tyres with the identical size are installed, and that each tyre pressure is within the value specified on the tyre pressure label.
Is the check result normal?
Go to Step 3.
Install the wheels/tyres with the identical size, or adjust the tyre pressure.
 
STEP 3. M.U.T.-IIISE other system diagnosis code.
Check the ASC diagnosis code (Refer to GROUP 35C - Troubleshooting ).
Is the diagnosis code set?
Perform the relevant troubleshooting.
Go to Step 4.
 
STEP 4. M.U.T.-IIISE data list.
Check the following data list (Refer to ).
  • Item No.35: Wheel speed (FL)
  • Item No.36: Wheel speed (FR)
  • Item No.37: Wheel speed (RL)
  • Item No.38: Wheel speed (RR)
Is the check result normal?
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunction ).
Replace the AWC-ECU (Refer to ).