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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 conditionWhen engine is running
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 ignition 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 “Self Diagnostic Result” of “ACC/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