Nissan Altima (L32) 2007-2012 Service Manual: Both side headlamps (LO) are not turned on

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Description

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

Diagnosis Procedure

1.CHECK COMBINATION SWITCH

Check the combination switch. Refer to BCS-10, "System Description".

Is the combination switch normal? YES >> GO TO 2

NO >> Repair or replace the malfunctioning part.

2.CHECK HEADLAMP (LO) REQUEST SIGNAL INPUT

1. Select "HL LO REQ" of IPDM E/R DATA MONITOR item.

2. With operating the lighting switch, check the monitor status.

Is the item status normal? YES >> GO TO 3

NO >> Replace BCM. Refer to BCS-96, "Removal and Installation" .

3.HEADLAMP (LO) CIRCUIT INSPECTION

Check the headlamp (LO) circuit. For Halogen headlamps, refer to EXL-42, "HEADLAMP (HALOGEN) : Diagnosis Procedure". For Xenon headlamps, refer to EXL-44, "HEADLAMP (XENON) : Diagnosis Procedure".

Is the headlamp (LO) circuit normal? YES >> Replace IPDM E/R. Refer to PCS-48, "Removal and Installation" .

NO >> Repair or replace the malfunctioning part.

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