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DTC C1565 Engine revolution data invalid
 
 
caution
  • If there is any problem in the CAN bus lines, an incorrect DTC 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
EPS-ECU receives engine revolution signal from the engine control module (ECM).
 
 
 
FUNCTION
The engine speed signal is sent to the EPS-ECU for motor control.
 
 
 
TROUBLE JUDGMENT
Check Conditions
  • Turn on the ignition switch.
  • The engine circuit system DTC is not set.
Judgment Criterion
  • If the microcomputer receives abnormal engine speed signal from the ECM, it determines that the engine speed calculation system is defective.
Fail Safe, Back Up Function
  • The EPS-ECU illuminates the electric power steering warning symbol, and sets DTC C1565. Normally the assist operation continues while the vehicle is driven, but deactivated after the vehicle is ignition switch to the "LOCK" (OFF) position.
 
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the ECM
  • Malfunction of the EPS-ECU
 
 
 
 
DIAGNOSIS
1. Check the data list "Item No. 19: Engine revolution" and If there is an abnormality, perform troubleshooting for ECM (Refer to GROUP 13A - Troubleshooting/Inspection Chart for DTC ).
2. Replace the EPS-ECU (Refer to ).