[ Model - ECLIPSE CROSS / Year - 2018 ]
2018 / ECLIPSE CROSS / EC - Workshop Manual
37 -ELECTRIC POWER STEERING (EPS) > TROUBLESHOOTING > DIAGNOSIS CODE PROCEDURES > C1564 VEHICLE SPEED DATA INVALID
Code No.C1564 Vehicle speed data invalid
 
 
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
The EPS-ECU receives the vehicle speed information from the ASC-ECU.
 
 
 
FUNCTION
The EPS-ECU controls the assist force based on the vehicle speed information from the ASC-ECU.
 
 
 
TROUBLE JUDGEMENT
Check Conditions
  • The power supply circuit system diagnosis code (No. C1540, C1541) is not set.
Judgement Criterion
  • When the vehicle speed information sent from the ASC-ECU is abnormal.
Fail Safe, Back Up Function
  • The EPS-ECU sets diagnosis code No. C1564.
  • Since the assist force is calculated according to the vehicle speed, the assist is continued, but the assist force may be different from the usual time.
 
 
 
PROBABLE CAUSES
  • Malfunction of the ASC-ECU
  • Malfunction of the EPS-ECU
 
 
 
 
DIAGNOSIS PROCEDURE
1. Check MUT-IIISE data list (No.18 Vehicle speed) (Refer to ).
2. Check if ASC-ECU sets diagnosis code (GROUP 35C - Troubleshooting ).
3. Replace the EPS-ECU (Refer to ).