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Home >> Infiniti >> 2016 >> Q50 Base, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Exterior Lighting System (DTC/Circuit Diagnosis) (Except Hybrid) >> DTC/Circuit Diagnosis >> Headlamp LEVELIZER Circuit >> Diagnosis Procedure >> Diagnostic Test

Diagnostic Test

  1. CHECK AIMING MOTOR DRIVE SIGNAL OUTPUT

    G-20 With CONSULT

    1. Turn ignition switch ON.
    2. Turn lighting switch 2ND.
    3. Select "LEVELIZER TEST" in "Active Test" mode of "ADAPTIVE LIGHT" using CONSULT.
    4. With operating the test items, check voltage between AFS control unit harness connector and ground.
      + - Test item Voltage
      (Approx.)
      AFS control unit
      Connector Terminal
      M4 22 Ground LEVELIZER TEST Max Position 8.01 V
      Min Position 3.75 V

    Is the inspection result normal?

    YES 

    GO TO STEP 2  .

    NO - 1 

    Fixed at 0 V: GO TO STEP 3  .

    NO - 2 

    Fixed at battery voltage: GO TO STEP 4  .

  2. CHECK AIMING MOTOR DRIVE CIRCUIT (OPEN)

    1. Turn ignition switch OFF.
    2. Disconnect AFS control unit connector and headlamp aiming motor connector.
    3. Check continuity between AFS control unit harness connector and headlamp aiming motor harness connector.
      AFS control unit Headlamp aiming motor Continuity
      Connector Terminal Connector Terminal
      RH M4 22 E71 1 Existed
      LH E21

    Is the inspection result normal?

    YES 

    Replace front combination lamp. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  3. CHECK AIMING MOTOR DRIVE CIRCUIT (SHORT TO GROUND)

    1. Turn ignition switch OFF.
    2. Disconnect AFS control unit connector and headlamp aiming motor connector.
    3. Check continuity between AFS control unit harness connector and ground.
      AFS control unit - Continuity
      Connector Terminal
      M4 22 Ground Not existed

    Is the inspection result normal?

    YES 

    Replace AFS control unit. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.

  4. CHECK AIMING MOTOR DRIVE CIRCUIT (SHORT TO BATTERY)

    1. Turn ignition switch OFF.
    2. Disconnect AFS control unit connector and headlamp aiming motor connector.
    3. Check voltage between AFS control unit harness connector and ground.
      + - Voltage
      (Approx.)
      AFS control unit
      Connector Terminal
      M4 22 Ground 0 V

    Is the inspection result normal?

    YES 

    Replace AFS control unit. Refer to REMOVAL AND INSTALLATION .

    NO 

    Repair or replace harness.