Infiniti FX35 / FX45. Manual - part 786

DAYTIME LIGHT SYSTEM

LT-39

< SERVICE INFORMATION >

C

D

E

F

G

H

I

J

L

M

A

B

LT

N

O

P

Termi-

nal No.

Wire 

color

Signal name

Measuring condition

Reference value

Ignition 

switch

Operation or condition

2

GY

Combination 
switch input 5

ON

Lighting, turn, wip-
er switch
(Wiper intermittent 
dial position 4)

OFF

Approx. 0 V

Lighting switch 2ND

Approx. 2.0 V

3

L/B

Combination 
switch input 4

ON

Lighting, turn, wip-
er switch
(Wiper intermittent 
dial position 4)

OFF

Approx. 0 V

Front fog lamp switch
(Operate only front fog lamp 
switch)

Approx. 0.8 V

Any of the conditions below
• Lighting switch 2ND
• Lighting switch PASSING

(Operates only PASSING 
switch)

Approx. 1.0 V

4

PU/W

Combination 
switch input 3

ON

Lighting, turn, wip-
er switch
(Wiper intermittent 
dial position 4)

OFF

Approx. 0 V

Any of the conditions below
• Lighting switch AUTO

Approx. 1.0 V

PKIB4953J

PKIB4955J

PKIB4959J

PKIB4959J

LT-40

< SERVICE INFORMATION >

DAYTIME LIGHT SYSTEM

32

GY/R

Combination 
switch output 5

ON

Lighting, turn, wip-
er switch (Wiper 
intermittent dial 
position 4)

OFF

Approx. 7.2 V

Front fog lamp switch
(Operates only front fog 
lamp switch)

Approx. 1.0 V

33

G

Combination 
switch output 4

ON

Lighting, turn, wip-
er switch (Wiper 
intermittent dial 
position 4)

OFF

Approx. 7.2 V

Lighting switch AUTO

Approx. 1.2 V

34

W/B

Combination 
switch output 3

ON

Lighting, turn, wip-
er switch (Wiper 
intermittent dial 
position 4)

OFF

Approx. 7.2 V

Lighting switch 2ND

Approx. 1.2 V

Termi-

nal No.

Wire 

color

Signal name

Measuring condition

Reference value

Ignition 

switch

Operation or condition

PKIB4960J

PKIB4956J

PKIB4960J

PKIB4958J

PKIB4960J

PKIB4958J

DAYTIME LIGHT SYSTEM

LT-41

< SERVICE INFORMATION >

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How to Proceed with Trouble Diagnosis

INFOID:0000000001328298

1.

Confirm the symptom or customer complaint.

2.

Understand operation description and function description. Refer to 

LT-32, "System Description"

.

3.

Perform Preliminary Check. Refer to 

LT-41, "Preliminary Check"

.

4.

Check symptom and repair or replace the cause of malfunction.

5.

Does daytime light lamp operate normally? If YES, GO TO 6. If NO, GO TO 4.

6.

INSPECTION END

Preliminary Check

INFOID:0000000001328299

CHECK POWER SUPPLY AND GROUND CIRCUIT

1.

CHECK FUSES

Check for blown fuses.

Refer to 

LT-35, "Wiring Diagram - DTRL -"

.

OK or NG

35

W/G

Combination 
switch output 2

ON

Lighting, turn, wip-
er switch
(Wiper intermittent 
dial position 4)

OFF

Approx. 7.2 V

Any of the conditions below
• Lighting switch 2ND
• Lighting switch PASSING

(Operates only PASSING 
switch)

Approx. 1.2 V

38

W/L

Ignition switch 
(ON) 

ON

—

Battery voltage

39

L

CAN 

−

 

H

—

—

—

40

P

CAN 

−

 

L

—

—

—

42

L/R

Battery power 
supply

OFF

—

Battery voltage

49

B

Ground

ON

—

Approx. 0 V

52

B

Ground

ON

—

Approx. 0 V

55

G

Battery power 
supply

OFF

—

Battery voltage

Termi-

nal No.

Wire 

color

Signal name

Measuring condition

Reference value

Ignition 

switch

Operation or condition

PKIB4960J

PKIB4958J

Unit

Power source

Fuse and fusible link No.

BCM

Battery

M

22

Ignition switch ON or START position

1

Daytime light relay

Battery

36

LT-42

< SERVICE INFORMATION >

DAYTIME LIGHT SYSTEM

OK

>> GO TO 2.

NG

>> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse. Refer to 

PG-

3

.

2.

CHECK POWER SUPPLY CIRCUIT 

1.

Turn ignition switch OFF.

2.

Disconnect BCM connector.

3.

Check voltage between BCM harness connector and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

3.

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness or connector.

INSPECTION PARKING BRAKE SWITCH CIRCUIT

1.

CHECK BRAKE INDICATOR

1.

Turn ignition switch ON.

2.

When a parking brake is made ON/OFF, it checks whether brake indicator lamp of combination meter
lights up / puts out the light.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 2.

2.

CHECK PARKING BRAKE SWITCH SIGNAL

1.

Turn ignition switch OFF.

2.

Disconnect parking brake switch connector.

3.

Turn ignition switch ON.

4.

Check voltage between parking brake switch harness connector
E207 terminal 1 and ground.

OK or NG

OK

>> Replace parking brake switch.

NG

>> GO TO 3.

3.

CHECK PARKING BRAKE SWITCH CIRCUIT

(+)

(-)

Ignition switch position

BCM con-

nector

Terminal

OFF

ON

M3

38

Ground

Approx. 0 V

Battery voltage

M4

42

Battery voltage

Battery voltage

55

Battery voltage

Battery voltage

PKIA7520E

BCM connector

Terminal

Ground

Continuity

M4

49

Yes

52

SKIA5294E

1 – Ground

: Battery voltage.

SKIA5876E