Nissan Sentra B18 (2020-2025) Service Manual: Exterior Lighting System Symptoms

Nissan Sentra B18 (2020-2025) Service Manual / Driver Controls / Exterior Lighting System :: Led Headlamp / Symptom Diagnosis / Exterior Lighting System Symptoms

Symptom Table

Symptom Table Note:

Perform the self-diagnosis with CONSULT before the symptom diagnosis. Perform the trouble diagnosis if any DTC is detected.

Symptom		Possible cause	Inspection item
Headlamp (HI) is not turned ON	One side	Headlamp (HI) power supply circuit Front combination lamp LED [headlamp (HI)] LED headlamp control module Harness IPDM E/R	Headlamp (HI) circuit Refer to Component Function Check.
	One side	LED headlamp ground circuit Front combination lamp LED headlamp control module Harness	LED headlamp circuit Refer to Diagnosis Procedure.
	Both sides	Symptom diagnosis “BOTH SIDE HEADLAMPS (HI) ARE NOT TURNED ON” Refer to Diagnosis Procedure.
High beam indicator lamp is not turned ON [headlamp (HI) is turned ON]		Combination meter	“METER/M&A” “Data Monitor” “HI-BEAM IND”
Headlamp (LO) is not turned ON	One side	Headlamp (LO) power supply circuit Front combination lamp LED [headlamp (LO)] LED headlamp control module Harness IPDM E/R	Headlamp (LO) circuit Refer to Component Function Check.
	One side	LED headlamp ground circuit Front combination lamp LED headlamp control module Harness	LED headlamp circuit Refer to Diagnosis Procedure.
	Both sides	Symptom diagnosis “BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON” Refer to Diagnosis Procedure.
Each lamp is not turned ON/OFF with lighting switch AUTO		Combination switch input/output signal circuit Combination switch BCM	Combination switch Refer to Symptom Table.
Each lamp is not turned ON/OFF with lighting switch AUTO		Optical sensor power supply/ground/signal circuit Optical sensor BCM	Optical sensor circuit Refer to Component Function Check.
Parking lamp is not turned ON		Parking lamp power supply/ground circuit Front combination lamp LED (parking lamp/daytime running light) Control circuit Harness IPDM E/R	Parking lamp circuit Refer to Component Function Check.
Tail lamp and front side marker lamp is not turned ON		Tail lamp power supply/ground circuit Tail lamp bulb Tail lamp bulb socket/harness Front combination lamp LED (front side marker lamp) Control circuit Harness IPDM E/R	Tail lamp circuit Refer to Component Function Check.
License plate lamp is not turned ON		License plate lamp power supply/ground circuit License plate lamp License plate lamp bulb socket/harness	License plate lamp circuit Refer to Component Function Check.
Parking lamp, license plate lamp, side marker lamp and tail lamp are not turned ON		Symptom diagnosis “PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMPS ARE NOT TURNED ON” Refer to Diagnosis Procedure.
Position light indicator lamp is not turned ON (parking lamp, license plate lamp, side marker and tail lamp are turned ON)		Combination meter	“METER/M&A” “Data Monitor” “LIGHT IND”
Daytime running light is not turned ON		Daytime running light power supply/ground circuit Front combination lamp LED (parking lamp/daytime running light) Control circuit Harness IPDM E/R	Daytime running light circuit Refer to Component Function Check.
Turn signal lamp does not blink	Indicator lamp is normal (all of turn signal lamp is not blinks)	Fuse Battery power supply (turn signal lamp) circuit BCM	Turn signal lamp circuit Refer to Component Function Check.
	Indicator lamp is normal (applicable side performs high flasher activation)	Front turn signal lamp Front turn signal lamp power supply/ground circuit Front turn signal lamp bulb Front turn signal lamp bulb socket/harness Side turn signal lamp Side turn signal lamp power supply/ground circuit Door mirror LED (side turn signal lamp) Harness Rear turn signal lamp Rear turn signal lamp power supply/ground circuit Rear turn signal lamp bulb Rear turn signal lamp bulb socket/harness BCM
	Indicator lamp is included	Combination switch input/output signal circuit Combination switch BCM	Combination switch Refer to Symptom Table.
Turn signal indicator lamp does not blink (turn signal lamp is normal)	One side	Combination meter	—
	Both sides (always)	Turn indicator signal BCM Combination meter	“METER/M&A” “Data Monitor” “TURN IND”
	Both sides (only when activating hazard warning lamp with ignition switch OFF)	Combination meter power supply/ground circuit Combination meter	Combination meter Power supply and ground circuit Refer to Diagnosis Procedure (type A). Refer to Diagnosis Procedure (type B).
Hazard warning lamp does not activate (turn signal lamp is normal) Hazard warning lamp continues activating		Hazard switch signal/ground circuit Hazard switch BCM	Hazard switch circuit Refer to Component Function Check.
Stop lamp and high-mounted stop lamp are not turned ON	All of stop lamp and high-mounted stop lamp are not turned ON	Fuse Battery power supply (stop lamp) circuit Stop lamp switch power supply/signal circuit Stop lamp switch BCM	Stop lamp circuit Refer to Component Function Check.
Stop lamp and high-mounted stop lamp are not turned ON	Any of stop lamp and high-mounted stop lamp are not turned ON	Stop lamp Stop lamp power supply/ground circuit Stop lamp bulb Stop lamp bulb socket/harness High-mounted stop lamp High-mounted stop lamp power supply/ground circuit High-mounted stop lamp LED (high-mounted stop lamp) BCM	Stop lamp circuit Refer to Component Function Check.
Back-up lamp is not turned ON (with CVT)		TCM power supply/ground circuit TCM	TCM Power supply and ground circuit Refer to Diagnosis Procedure.
		Transmission range switch power supply/ground/signal circuit Transmission range switch	Transmission range switch circuit Refer to Diagnosis Procedure.
		Back-up lamp relay power supply/control circuit Back-up lamp power supply/ground circuit Rear combination lamp (trunk lid side) bulb Rear combination lamp (trunk lid side) bulb socket/harness Back-up lamp relay	Back-up lamp relay circuit Refer to Component Function Check.
Headlamp warning stays ON		Harness between IPDM E/R and front combination lamp Front combination lamp IPDM E/R	Headlamp warning circuit Refer to Component Function Check.
HBA is not turned ON/OFF		Combination switch input/output signal circuit Combination switch BCM	Combination switch Refer to Symptom Table.

Symptom Diagnosis

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