Nissan Titan A60. Manual - part 518

TRAILER TOW

EXL-127

< WIRING DIAGRAM >

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D

E

F

G

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J

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A

B

EXL

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ABLIA2765GB

EXL-128

< WIRING DIAGRAM >

TRAILER TOW

ABLIA2766GB

EXTERIOR LIGHTING SYSTEM SYMPTOMS

EXL-129

< SYMPTOM DIAGNOSIS >

C

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EXL

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SYMPTOM DIAGNOSIS

EXTERIOR LIGHTING SYSTEM SYMPTOMS

Symptom Table

INFOID:0000000006179066

CAUTION:

Perform the self-diagnosis with CONSULT-III before the symptom diagnosis. Perform the trouble diag-

nosis if any DTC is detected.

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 

EXL-37

.

Both sides

Symptom diagnosis
 "BOTH SIDE HEADLAMPS DO NOT SWITCH TO HIGH BEAM"
Refer to 

EXL-132

.

High beam indicator lamp is not turned ON.
(Headlamp switches to the high beam.)

• Combination meter
• BCM

• Combination meter. 

Data monitor "HI-BEAM IND".

• BCM (HEAD LAMP)

Active test "HEADLAMP".

Headlamp does not 
switch to the low beam.

One side

Front combination lamp (Low 
beam relay)

—

Both sides

• Combination switch (lighting 

and turn signal switch)

• Harness between the combina-

tion switch (lighting and turn sig-
nal switch) and BCM

• BCM

Combination switch (lighting and 
turn signal switch)
Refer to 

BCS-33

.

High beam request signal
• BCM
• IPDM E/R

IPDM E/R
Data monitor "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 

EXL-42

.

Both sides

Symptom diagnosis
"BOTH SIDE HEADLAMPS (LO) ARE NOT TURNED ON"
Refer to 

EXL-133, "Description"

.

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 

BCS-33

.

Headlamp is not turned ON/OFF with the lighting 
switch AUTO.

• Combination switch (lighting 

and turn signal switch)

• Harness between the combina-

tion switch (lighting and turn sig-
nal switch) and BCM

• BCM

Combination switch (lighting and 
turn signal switch).
Refer to 

BCS-33

.

• Optical sensor
• Harness between the optical 

sensor and BCM

• BCM

Optical sensor.
Refer to 

EXL-60

.

EXL-130

< SYMPTOM DIAGNOSIS >

EXTERIOR LIGHTING SYSTEM SYMPTOMS

Daytime light system does not activate.

• Either high beam bulb
• Parking brake switch
• Combination switch (lighting 

and turn signal switch)

• BCM
• IPDM E/R
• Daytime light relay
• Harness between IPDM E/R 

and daytime light relay.

Daytime light system description. 
Refer to 

EXL-11, "System Dia-

gram"

.

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 

EXL-45

.

Both side

Symptom diagnosis
"BOTH SIDE FRONT FOG LAMPS ARE NOT TURNED ON"
Refer to 

EXL-135

.

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 

EXL-47

.

Both sides

Symptom diagnosis
"PARKING, LICENSE PLATE AND TAIL LAMPS ARE NOT TURNED 
ON"
Refer to 

EXL-134

.

Turn signal lamp does not 
blink.

Indicator lamp is nor-
mal.
(The applicable side 
performs the high flash-
er 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 

EXL-53

.

Turn signal indicator lamp 
does not blink.

One side

Combination meter

—

Both sides
(Always)

• Turn signal indicator lamp sig-

nal

• Combination meter
• BCM

• Combination meter. 

Data monitor "TURN IND".

• BCM  (FLASHER)

Active test "FLASHER".

Both sides
(Does blink when acti-
vating the hazard warn-
ing lamp with the 
ignition switch OFF)

• The combination meter power 

supply and the ground circuit

• Combination meter

Combination meter.
Power supply and the ground circuit
Refer to 

MWI-33

.

Symptom

Possible cause

Inspection item