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Home >> Infiniti >> 2012 >> EX35 Base, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 39 (Auto Cruise Control System) >> Intelligent Cruise Control >> Component Diagnosis >> DTC C1A00: Control Unit >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2008 Infiniti EX35. However, it is still accessible from the selected car via links, so may be relevant.
  1. PERFORM SELF-DIAGNOSIS OF ICC SENSOR INTEGRATED UNIT 
    1. Perform self-diagnosis of ICC sensor integrated unit.
    2. Check if DTC other than "C1A00: CONTROL UNIT" (DTC 0) is detected.

    Is any DTC detected? 

    YES: GO TO  2.

    NO: GO TO  3.

  2. DIAGNOSIS FOR DETECTED DTC 

    Perform diagnosis on the detected DTC and repair or replace the applicable item. Refer to DTC INDEX  .

    GO TO  4.

  3. REPLACE ICC SENSOR INTEGRATED UNIT 
    1. Replace ICC sensor integrated unit.
    2. Adjust laser beam aiming. Refer to SPECIAL REPAIR REQUIREMENT (PREPARATION)  .

    GO TO  4.

  4. CHECK ICC SYSTEM 
    1. Erase DTC and perform ICC system action test. Then perform self-diagnosis of ICC sensor integrated unit. (For the details on the ICC system action test, refer to SPECIAL REPAIR REQUIREMENT (VEHICLE-TO-VEHICLE DISTANCE CONTROL MODE)  ).
    2. Check that no abnormal condition is present in the ICC system.

    INSPECTION END