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DTC Description

DTC DETECTION LOGIC 

DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition
 
C1A40 23 SYSTEM SW CIRC (System switch circuit) Diagnosis condition When engine is running
Signal (terminal) Steering assist switch signal
Threshold Steering assist switch ON status is detected continuously
Diagnosis delay time 10 minutes or more
24 Diagnosis condition When engine is running
Signal (terminal) Steering assist switch signal
Threshold Steering assist switch ON status is detected continuously
Diagnosis delay time 10 minutes or more

POSSIBLE CAUSE 

FAIL-SAFE 

The following systems are canceled.

CONFIRMATION PROCEDURE 

  1. CHECK DTC PRIORITY 

    If DTC "C1A40-23" or "C1A40-24" is displayed with DTC "U1000-01", first diagnose the DTC "U1000-01".

    Is applicable DTC detected?

    >>

    Perform diagnosis of applicable. Refer to DTC Description .

    >>

    GO TO 2.

  2. PERFORM DTC CONFIRMATION PROCEDURE 
    1. Start the engine
    2. Perform "All DTC Reading".
    3. Check if the "C1A40-23" or "C1A40-24" is detected as the current malfunction in the "Self Diagnostic Result" of "ICC/ADAS".

    Is "C1A40-23" or "C1A40-24" detected as the current malfunction?

    >>

    Refer to Diagnosis Procedure .

    >>

    To check malfunction symptom before repair: Refer to Intermittent Incident .

    >>

    Confirmation after repair: INSPECTION END