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DTC Description
 
 
DTC DETECTION LOGIC
DTC M.U.T.-III SE screen terms
(Trouble diagnosis content)
DTC detection condition
C1F03 23 OPERATION SW CIRC
(Operation switch circuit)
Diagnosis condition
  • READY indicator: ON
  • When MI PILOT Assist MAIN switch is ON
Signal (terminal)
Threshold Any switch of the MI PILOT Assist steering switch is detected as “ON”
Diagnosis delay time Continuously 60 seconds
 
 
POSSIBLE CAUSE
  • MI PILOT Assist steering switch circuit
  • MI PILOT Assist steering switch
  • PHEV-ECU
 
 
FAIL-SAFE
The following systems are canceled.
  • Vehicle-to-vehicle distance control mode
  • Conventional (fixed speed) cruise control mode
  • Steering wheel assistance function
 
 
CONFIRMATION PROCEDURE
1.CHECK DTC PRIORITY
If DTC “C1F03-23” 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. Change the power supply mode of the electric motor switch to ON (READY indicator: ON).
  2. Wait for approximately 5 minutes after turning the MI PILOT Assist MAIN switch ON. 
  3. Perform “Read All DTCs” with M.U.T.-III SE.
  4. Check if the “C1F03-23” is detected as the current malfunction in "Diagnostic Trouble Code" of “ICC/ADAS 2”.
Is “C1F03-23” detected as the current malfunction?
Refer to DTC Diagnosis ProcedureDiagnosis Procedure.
-1 To check malfunction symptom before repair: Refer to Intermittent IncidentIntermittent Incident.
-2 Confirmation after repair: INSPECTION END