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Home >> Infiniti >> 2015 >> Q50 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Warning Systems >> Intelligent Cruise Control System (ICC) (Exc Hybrid) >> Symptom Diagnosis >> Frequently Cannot Detect The Vehicle Ahead / Detection Zone Is Short >> Diagnosis Procedure

Diagnosis Procedure

  1. VISUAL CHECK (1)

    Check the contamination and foreign matter on the ICC sensor area of the front bumper.

    Is foreign matter present?

    YES 

    GO TO STEP 3. 

    NO 

    GO TO STEP 2. 

  2. VISUAL CHECK (2)

    1. Remove the front bumper. Refer to REMOVAL AND INSTALLATION .
    2. Check ICC sensor for contamination and foreign matter.

    Is foreign matter present?

    YES 

    GO TO STEP 3. 

    NO 

    GO TO STEP 4. 

  3. WIPE OUT DIRT AND FOREIGN MATERIALS

    Wipe out the contamination and foreign matter in the area around the ICC sensor.

    GO TO STEP 8. 

  4. VISUAL CHECK (3)

    Check ICC sensor for cracks and scratches.

    Are there any cracks or scratches?

    YES 

    GO TO STEP 6  .

    NO 

    GO TO STEP 5. 

  5. PERFORM RADAR ALIGNMENT

    1. Install the front bumper. Refer to REMOVAL AND INSTALLATION .
    2. Perform the radar alignment. Refer to DESCRIPTION .
    3. Perform ICC system action test. Refer to DESCRIPTION .
    4. Check that the vehicle ahead detection performance improves.

    Does it improve?

    YES 

    INSPECTION END

    NO 

    GO TO STEP 6. 

  6. REPLACE ICC SENSOR

    1. Replace the ICC sensor. Refer to EXPLODED VIEW .
    2. Install the front bumper. Refer to REMOVAL AND INSTALLATION .
    3. Perform the radar alignment. Refer to DESCRIPTION .
    4. Perform ICC system action test. Refer to DESCRIPTION .
    5. Check that the vehicle ahead detection performance improves.

    Does it improve?

    YES 

    INSPECTION END

    NO 

    GO TO STEP 7. 

  7. REPLACE ADAS CONTROL UNIT

    Replace ADAS control unit. Refer to REMOVAL AND INSTALLATION .

    GO TO STEP 8. 

  8. CHECK ICC SYSTEM

    1. Erase the self-diagnosis results, and then perform "All DTC Reading" again after performing the actiontest. (Refer to DESCRIPTION  for action test).
    2. Check that the ICC system is normal.

    INSPECTION END