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DTC C1565 Engine revolution data invalid
 
 
cautionWhenever 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 the ignition switch to the "ON" position (Engine running).
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 Light, and sets DTC No.C1565.
 
 
 
TROUBLESHOOTING HINTS
  • Malfunction of the ECM
  • Malfunction of the EPS-ECU
 
 
 
 
DIAGNOSIS
STEP 1. Using scan tool (M.U.T.-IIISE), check whether the other DTC is set.
Using scan tool (M.U.T.-IIISE) to check that DTC is set in the ECM.
Check if the DTC is set.
Is the DTC set?
Perform troubleshooting for ECM (Refer to GROUP 13A - Diagnostic Trouble Code Chart ).
Go to Step 2.
 
STEP 2. Using scan tool (M.U.T.-IIISE), check whether the DTC is set again.
(1) Erase the DTC.
(2) Turn the ignition switch to the "LOCK" (OFF) position.
(3) Turn the ignition switch to the "ON" position (Engine running). .
Is the DTC set?
Replace the EPS motor (EPS-ECU). (Refer to ).
Intermittent malfunction (Refer to GROUP 00 - How to Cope with Intermittent Malfunctions ).