Exterior Lighting System Symptoms: Symptom Table

CAUTION: Perform "DTC check" with SDT before the symptom diagnosis. Perform the trouble diagnosis if any DTC is detected.

SYMPTOM CHART

Symptom		Possible cause	Inspection item
Headlamp does not switch to the high beam.	One side	Fuse Harness between IPDM E/R and the front combination lamp Front combination lamp (High beam relay) IPDM E/R	Headlamp (HI) circuit. Refer to Headlamp (HI) Circuit Check .
Headlamp does not switch to the high beam.	Both sides	Symptom diagnosis "BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM" Refer to Both Side Headlamps Do Not Switch to High Beam .
High beam indicator lamp is not turned ON. (Headlamp switches to the high beam.)		Combination meter BCM	Combination meter. Data list "HI-BEAM IND" BCM (HEAD LAMP) Active test "HEADLAMP"
Headlamp does not switch to the low beam.	One side	Daytime light relay 2 Harness between IPDM, daytime light relay 2 and front combination lamp LH. Front combination lamp (Low beam)	Headlamp (LO) circuit Refer to Headlamp (LO) Circuit Check .
	Both sides	Combination switch Harness between the combination switch and BCM BCM	Combination switch (lighting and turn signal switch) Refer to COMBINATION SWITCH CIRCUIT CHECK .
		High beam request signal BCM IPDM E/R	IPDM E/R Data list "HL HI REQ"
		IPDM E/R	-
Headlamp does not turn ON.	One side	Fuse Bulb Harness between IPDM E/R and the front combination lamp Front combination lamp IPDM E/R	Headlamp (LO) circuit Refer to Headlamp (LO) Circuit Check .
Headlamp does not turn ON.	Both sides	Symptom diagnosis "BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON" Refer to [BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON ].
Headlamp does not turn OFF.	When the ignition switch is turned ON	BCM Combination switch (lighting and turn signal switch)	Combination switch (lighting and turn signal switch) Refer to COMBINATION SWITCH CIRCUIT CHECK .
Headlamp does not turn OFF.	When the ignition switch is turned ON	BCM Combination switch (lighting and turn signal switch)
Daytime light system does not activate.		Either high beam bulb Parking brake switch Combination switch BCM IPDM E/R Daytime light relay Harness between IPDM E/R and daytime light relay.	Daytime light system description. Refer to [DAYTIME RUNNING LIGHT SYSTEM: SYSTEM DESCRIPTION ].
Front fog lamp is not turned ON.	One side	Front fog lamp bulb Harness between IPDM E/R and the front combination lamp Front combination lamp IPDM E/R	Front fog lamp circuit Refer to Front Fog Lamp Circuit Check .
Front fog lamp is not turned ON.	Both side	Symptom diagnosis "BOTH SIDE FRONT FOG LAMPS ARE NOT TURNED ON" Refer to Both Side Headlamps (LO) Are Not Turned On .
Parking lamp is not turned ON.	One side	Fuse Parking lamp bulb Harness between IPDM E/R and the front/rear combination lamp Front/rear combination lamp IPDM E/R	Parking lamp circuit Refer to Parking Lamp Circuit Check .
Parking lamp is not turned ON.	Both sides	Symptom diagnosis "PARKING, LICENSE PLATE AND TAIL LAMPS ARE NOT TURNED ON" Refer to Parking, License Plate and Tail Lamps Are Not Turned On .
Turn signal lamp does not blink.	Indicator lamp is normal. (The applicable side performs the high flasher activation).	Harness between BCM and each turn signal lamp Turn signal lamp bulb Door mirror (if equipped with turn signals in the door mirrors)	Turn signal lamp circuit Refer to Turn Signal Lamp Circuit Check .
Turn signal indicator lamp does not blink.	One side	Combination meter	-
	Both sides (Always)	Turn signal indicator lamp signal Combination meter BCM	Combination meter. Data list "TURN IND" BCM (FLASHER) Active test "FLASHER"
	Both sides (Does blink when activating the hazard warning lamp with the ignition switch OFF)	The combination meter power supply and the ground circuit Combination meter	Power supply and the ground circuit Refer to POWER SUPPLY AND GROUND CIRCUIT CHECK [COMBINATION METER] .