Diagnosis Procedure

WARNING: This page is about a different car, the 2018 Nissan Titan XD and 2018 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

The headlamps (both sides) do not switch to high beam when the combination switch (lighting and turn signal switch) is in the HI or PASS setting.

COMBINATION SWITCH (LIGHTING AND TURN SIGNAL SWITCH) INSPECTION
Check the combination switch (lighting and turn signal switch). Refer to Symptom Table .

Is the combination switch (lighting and turn signal switch) normal?

YES

GO TO 2 .

NO

Repair or replace the malfunctioning part.

CHECK HEADLAMP (HI) REQUEST SIGNAL INPUT

WITH CONSULT

Select "HL HI REQ" in "Data Monitor" mode of "IPDM E/R".
With operating the combination switch (lighting and turn signal switch), check the monitor status.

Monitor item	Condition		Monitor status
HL HI REQ	Combination switch (lighting and turn signal switch)	HI or PASS	ON
		Except for HI or PASS	OFF

Is the item status normal?

YES

GO TO 3 .

Replace BCM. Refer to Removal and Installation .

HEADLAMP (HI) CIRCUIT INSPECTION
Check the headlamp (HI) circuit. Refer to Diagnosis Procedure .

Is the headlamp (HI) circuit normal?

YES

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

NO

Repair or replace the malfunctioning part.