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Home >> Infiniti >> 2011 >> G37 IPL, Standard >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> Exterior Lighting System -- G37 Coupe >> Symptom Diagnosis >> Both Side Headlamps (Lo) Are Not Turned On >> Diagnosis Procedure

Diagnosis Procedure

  1. COMBINATION SWITCH INSPECTION

    Check the combination switch. Refer to "SYMPTOM TABLE ".

    Is the combination switch normal? 

    YES: GO TO 2.

    NO: Repair or replace the malfunctioning part.

  2. CHECK HEADLAMP (LO) REQUEST SIGNAL INPUT

    CONSULT-III DATA MONITOR

    1. Select "HL LO REQ" of IPDM E/R data monitor item.
    2. With operating the lighting switch, check the monitor status.
      CONDITION REFERENCE CHART

      Monitor item Condition Monitor status
      HL LO REQ Lighting switch 2ND On
      OFF Off

      Is the item status normal? 

      YES: GO TO 3.

      NO: Replace BCM.

  3. HEADLAMP (LO) CIRCUIT INSPECTION

    Check the headlamp (LO) circuit. Refer to HEADLAMP (LO) CIRCUIT .

    Is the headlamp (LO) circuit normal? 

    YES: Replace IPDM E/R.

    NO: Repair or replace the malfunctioning part.