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DTC Description
 
 
DTC DETECTION LOGIC
DTCM.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
C1F5904EPS control unit
(Electric power steering control unit)
Diagnosis conditionREADY indicator: ON
Signal (terminal)CAN communication signal
ThresholdIf ADAS control unit 2 detects an error signal that is received from EPS control unit via CAN communication
Diagnosis delay time1 second or less
 
 
POSSIBLE CAUSE
EPS control unit
 
 
FAIL-SAFE
The following systems are canceled.
  • Vehicle-to-vehicle distance control mode
  • Conventional (fixed speed) cruise control mode
  • Steering assistance function
 
 
CONFIRMATION PROCEDURE
1.CHECK DTC PRIORITY
If DTC “C1F59-04” is displayed with Network-DTC, first diagnose the Network-DTC.
Is applicable DTC detected?
Perform diagnosis of applicable. Refer to DTC IndexDTC Index.
.
 
2.PERFORM DTC CONFIRMATION PROCEDURE
  1. Turn the electric motor switch ON.
  2. Perform “Read All DTCs” with M.U.T.-III SE.
  3. Check if the “C1F59-04” is detected as the current malfunction in "Diagnostic Trouble Code" of “ICC/ADAS 2”.
Is “C1F59-04” detected as the current malfunction?
Refer to DTC Diagnosis ProcedureDiagnosis Procedure.
-1To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2Confirmation after repair: INSPECTION END