LEMON Manuals: Even more car manuals for everyone
Home >> Nissan-Datsun >> 2021 >> NV2500 HD S >> Repair and Diagnosis >> External Pages >> Different car >> Section 520 (Exterior Lighting System) >> Symptom Diagnosis >> Both Side Headlamps (Lo) Are Not Turned On >> Diagnosis Procedure

Diagnosis Procedure

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

The headlamps (both sides) do not turn ON in any lighting switch setting.

  1. LIGHTING SWITCH INSPECTION 

    Check the lighting switch. Refer to Diagnosis Procedure .

    Is the lighting switch normal?

    YES

    GO TO 2.

    NO

    Repair or replace the malfunctioning part.

  2. CHECK HEADLAMP (LO) REQUEST SIGNAL INPUT 

    SYMBOL CONSULT DATA MONITOR

    1. Select "HL LO REQ" of IPDM E/R DATA MONITOR item.
    2. While operating the lighting switch, check the monitor status.

    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. Refer to Removal and Installation .

  3. HEADLAMP (LO) CIRCUIT INSPECTION 

    Check the headlamp (LO) circuit. Refer to Component Function Check .

    Is the headlamp (LO) circuit normal?

    YES

    Replace IPDM E/R. Refer to Removal and Installation .

    NO

    Repair or replace the malfunctioning part.