Nissan Leaf. Manual - part 662

HAZARD SWITCH

EXL-249

< DTC/CIRCUIT DIAGNOSIS >

[HALOGEN HEADLAMP]

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HAZARD SWITCH

Component Function Check

INFOID:0000000010121468

1.

CHECK HAZARD SWITCH SIGNAL BY CONSULT

CONSULT DATA MONITOR

1. Turn power switch ON.

2. Select “HAZARD SW” in “Data Monitor” of “BCM (FLASHER)”.

3. While operating the hazard switch, check the monitor status.

Is the inspection result normal?

YES

>> Hazard switch circuit is normal.

NO

>> Refer to 

EXL-249, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010121469

Regarding Wiring Diagram information. Refer to 

EXL-59, "Wiring Diagram"

.

1.

CHECK HAZARD SWITCH SIGNAL INPUT

1. Turn power switch OFF.

2. Disconnect hazard switch connector.

3. Check voltage between hazard switch connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 2.

2.

CHECK HAZARD SWITCH SIGNAL OPEN CIRCUIT

1. Disconnect BCM connector.

2. Check continuity between hazard switch harness connector and BCM harness connector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness.

3.

CHECK HAZARD SWITCH SIGNAL SHORT CIRCUIT

Check continuity between hazard switch harness connector and ground.

Monitor item

Condition

Monitor status

HAZARD SW

Hazard switch

ON

On

OFF

Off

(+)

(

−)

Voltage (Approx.)

Hazard switch

Connector

Terminal

M45

2

Ground

Battery voltage

Hazard switch

BCM

Continuity

Connector

Terminal

Connector

Terminal

M45

2

M24

29

Yes

Hazard switch

Ground

Continuity

Connector

Terminal

M45

2

No

EXL-250

< DTC/CIRCUIT DIAGNOSIS >

[HALOGEN HEADLAMP]

HAZARD SWITCH

Is the inspection result normal?

YES

>> Replace BCM. Refer to 

BCS-72, "Removal and Installation"

.

NO

>> Repair or replace harness.

4.

CHECK HAZARD SWITCH GROUND OPEN CIRCUIT

Check continuity between hazard switch harness connector and ground.

Is the inspection result normal?

YES

>> Replace hazard switch. Refer to 

EXL-273, "Removal and Installation"

.

NO

>> Repair or replace harness.

Hazard switch

Ground

Continuity

Connector

Terminal

M45

1

Yes

EXTERIOR LIGHTING SYSTEM SYMPTOMS

EXL-251

< SYMPTOM DIAGNOSIS >

[HALOGEN HEADLAMP]

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SYMPTOM DIAGNOSIS

EXTERIOR LIGHTING SYSTEM SYMPTOMS

WITHOUT DAYTIME RUNNING LIGHT SYSTEM
WITHOUT DAYTIME RUNNING LIGHT SYSTEM : Symptom Table

INFOID:0000000010121470

CAUTION:

Perform the “Self Diagnostic Result” with CONSULT before the symptom diagnosis. Perform the trou-

ble diagnosis if any DTC is detected.

Symptom

Possible cause

Inspection item

Headlamp (HI) is not 
turned ON.

One side

• Fuse
• Halogen bulb (HI)
• Harness between IPDM E/R 

and front combination lamp

• Harness between front combi-

nation lamp and ground

• IPDM E/R

Headlamp (HI) circuit
Refer to 

EXL-224, "WITHOUT DAY-

TIME RUNNING LIGHT SYSTEM : 
Component Function Check"

.

Both sides

Symptom diagnosis
 “BOTH SIDE HEADLAMPS (HI) ARE NOT TURNED ON”
Refer to 

EXL-256, "WITHOUT DAYTIME RUNNING LIGHT SYSTEM : 

Diagnosis Procedure"

.

High beam indicator lamp is not turned ON.
[Headlamp (HI) is turned ON.]

Combination meter

• Combination meter 

Data monitor “HI-BEAM IND”

• BCM (HEAD LAMP)

Active test “HEADLAMP”

Headlamp (LO) is not 
turned ON.
[Headlamp warning lamp 
is not turned ON.]

One side

• Fuse
• Harness between IPDM E/R 

and front combination lamp

• IPDM E/R

Headlamp (LO) circuit
Refer to 

EXL-229, "Component 

Function Check"

.

Both sides

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

EXL-258, "Diagnosis Procedure"

.

Each lamp is not turned ON/OFF using lighting 
switch AUTO.

• Combination switch
• Harness between combination 

switch and BCM

• BCM

Combination switch
Refer to 

BCS-71, "Symptom Table"

.

• Optical sensor
• Harness between optical sen-

sor and BCM

• BCM

Optical sensor
Refer to 

EXL-246, "Component 

Function Check"

.

Parking lamp is not turned ON.

• Fuse
• Parking lamp bulb
• Parking lamp bulb socket
• Harness between IPDM E/R 

and front combination lamp

• Harness between front combi-

nation lamp and ground

• IPDM E/R

Parking lamp circuit
Refer to 

EXL-234, "Component 

Function Check"

.

Front side marker lamp is not turned ON.

• Fuse
• Front side marker lamp bulb
• Front side marker lamp bulb 

socket

• Harness between IPDM E/R 

and front side marker lamp

• Harness between front side 

marker lamp and ground

Front side marker lamp circuit
Refer to 

EXL-236, "Component 

Function Check"

.

EXL-252

< SYMPTOM DIAGNOSIS >

[HALOGEN HEADLAMP]

EXTERIOR LIGHTING SYSTEM SYMPTOMS

WITH DAYTIME RUNNING LIGHT SYSTEM
WITH DAYTIME RUNNING LIGHT SYSTEM : Symptom Table

INFOID:0000000010121471

CAUTION:

Tail lamp and rear side marker lamp are not turned 
ON.

• Fuse
• Harness between IPDM E/R 

and rear combination lamp

• Harness between rear combi-

nation lamp and ground

• Rear combination lamp

Tail lamp circuit
Refer to 

EXL-238, "Component 

Function Check"

.

License plate lamp is not turned ON.

• License plate lamp bulb
• License plate lamp bulb socket
• Harness between IPDM E/R 

and license plate lamp

• Harness between license plate 

lamp and ground

License plate lamp circuit
Refer to 

EXL-240, "Component 

Function Check"

.

Parking lamp, side marker lamp, tail lamp and li-
cense plate lamp are not turned OFF.

Symptom diagnosis
“PARKING, LICENSE PLATE, SIDE MARKER AND TAIL LAMPS ARE 
NOT TURNED ON”
Refer to 

EXL-259, "Diagnosis Procedure"

.

Tail lamp indicator lamp is not turned ON.
(Parking lamp, side marker lamp, tail lamp and li-
cense plate lamp are turned ON.)

Combination meter

• Combination meter

Data monitor “LIGHT IND”

• BCM (HEAD LAMP)

Active test “TAIL LAMP”

Turn signal lamp does not 
blink.

Indicator lamp is nor-
mal.
(Applicable side per-
forms high flasher acti-
vation.)

• Turn signal lamp bulb
• Turn signal lamp bulb socket
• Harness between BCM and 

each turn signal lamp

Turn signal lamp circuit
Refer to 

EXL-244, "Component 

Function Check"

.

Indicator lamp is includ-
ed.

• Combination switch
• Harness between combination 

switch and BCM

• BCM

Combination switch
Refer to 

BCS-71, "Symptom Table"

.

Turn signal indicator lamp 
does not blink.
(Turn signal lamp is nor-
mal.)

One side

Combination meter

—

Both sides
(Always)

• Turn signal indicator lamp sig-

nal

• BCM
• Combination meter

• Combination meter 

Data monitor “TURN IND”

• BCM  (FLASHER)

Active test “FLASHER”

Both sides
(Only when activating 
hazard warning lamp 
with power switch OFF)

• Combination meter power sup-

ply and ground circuit

• Combination meter

Combination meter
Power supply and ground circuit
Refer to 

MWI-85, "COMBINATION 

METER : Diagnosis Procedure"

.

• Hazard warning lamp does not activate.
• Hazard warning lamp continues activating.
(Turn signal is normal.)

• Hazard switch
• Harness between hazard 

switch and BCM

• BCM

Hazard switch
Refer to 

EXL-249, "Component 

Function Check"

.

Front fog lamp is not 
turned ON.

One side

• Front fog lamp bulb
• Harness between IPDM E/R 

and front fog lamp

• IPDM E/R

Front fog lamp circuit
Refer to 

EXL-242, "Component 

Function Check"

.

Both sides

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

EXL-260, "Diagnosis Procedure"

.

Front fog lamp indicator is not turned ON.
(Front fog lamp is turned ON.)

Combination meter

• Combination meter

Data monitor “FR FOG IND”

• BCM (HEAD LAMP)

Active test “FR FOG LAMP”

Symptom

Possible cause

Inspection item