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Home >> Infiniti >> 2015 >> QX60 Base, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Intelligent Cruise Control System (DTC/Circuit Diagnosis) (ICC) (Except Hybrid)) >> DTC/Circuit Diagnosis >> DTC C1A21: Unit High Temp >> ADAS Control Unit >> DTC Logic >> DTC Detection Logic

DTC Detection Logic

WARNING: This page is about a different car, the 2016 Infiniti QX60. However, it is still accessible from the selected car via links, so may be relevant.
DTC
(On board display)
Trouble diagnosis name DTC detecting condition Possible causes
C1A21
(21)
ICC SENSOR HIGH TEMP ICC sensor judges high temperature abnormality Temperature around the ICC sensor becomes high

  1. PERFORM DTC CONFIRMATION PROCEDURE

    1. Turn the ignition switch OFF.
    2. Wait for 10 minutes or more to cool the ICC sensor.
    3. Start the engine.
    4. Turn the DCA system ON.
    5. Perform "All DTC Reading" with CONSULT.
    6. Check if the "C1A21" is detected as the current malfunction in "Self Diagnostic Result" of "ICC/ADAS".

    Is "C1A21" detected as the current malfunction?

    YES 

    Refer to DIAGNOSIS PROCEDURE .

    NO 

    Refer to INTERMITTENT INCIDENT .