Infiniti M35/M45 Y50. Manual - part 914

FRONT FOG LAMP

LT-201

C

D

E

F

G

H

I

J

L

M

A

B

LT

TKWT4854E

LT-202

FRONT FOG LAMP

Terminals and Reference Values for BCM

NKS003R8

CAUTION:

●

Check combination switch system terminal waveform under the loaded condition with lighting
switch, turn signal switch and wiper switch OFF not to be fluctuated by overloaded.

●

Turn wiper dial position to 4 except when checking waveform or voltage of wiper dial position.
Wiper dial position can be confirmed on CONSULT-II. Refer to 

LT-238, "DATA MONITOR"

 .

Termi-

nal 

No.

Wire 

color

Signal name

Measuring condition

Reference value

Ignition 

switch

Operation or condition

3

O/L

Combination 
switch input 4

ON

Lighting, turn, wiper 
switch
(Wiper dial position 
4)

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

Approx. 0.8 V

OFF

Approx. 0 V

11

V

Ignition switch 

(ACC)

ACC

—

Battery voltage

32

LG

Combination 
switch output 5

ON

Lighting, turn, wiper 
switch
(Wiper dial position 
4)

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

Approx. 1.0 V

OFF

Approx. 7.0 - 7.5 V

37

LG

Key switch signal

OFF

Intelligent Key is inserted into key slot.

Battery voltage

Intelligent Key is removed from key slot.

Approx. 0 V

38

W

Ignition switch 

(ON) 

ON

—

Battery voltage

39

L

CAN 

−

 

H

—

—

—

40

P

CAN 

−

 

L

—

—

—

42

P

Battery power 
supply

OFF

—

Battery voltage

52

B

Ground

ON

—

Approx. 0 V

55

W

Battery power 
supply

OFF

—

Battery voltage

PKIB4955J

PKIB4956J

PKIB4960J

FRONT FOG LAMP

LT-203

C

D

E

F

G

H

I

J

L

M

A

B

LT

Terminals and Reference Values for IPDM E/R

NKS003R9

How to Perform Trouble Diagnoses

NKS003RA

1.

Confirm the symptom or customer complaint.

2.

Understand operation description and function description. Refer to 

LT-194, "System Description"

 .

3.

Perform the Preliminary Check. Refer to 

LT-203, "Preliminary Check"

 .

4.

Check symptom and repair or replace the cause of malfunction.

5.

Does the front fog lamp operate normally? If YES, GO TO 6. If NO, GO TO 4.

6.

INSPECTION END

Preliminary Check

NKS003RB

CHECK POWER SUPPLY AND GROUND CIRCUIT

1. 

CHECK FUSES AND FUSIBLE LINK

Check for blown fuses and fusible link.

62

V

Front door switch 
driver side signal

OFF

Front door switch 
driver side

ON (open)

Approx. 0 V

OFF (closed)

Approx. 7.5 - 8.0 V

Termi-

nal 

No.

Wire 

color

Signal name

Measuring condition

Reference value

Ignition 

switch

Operation or condition

PKIB4960J

Terminal 

No.

Wire 

color

Signal name

Measuring condition

Reference value

Ignition 

switch

Operation or condition

36

L/Y

Front fog lamp (LH) 

ON

Lighting switch must be in 
the 2ND position or AUTO 
position (headlamp is ON)

Front fog lamp switch: OFF

Approx. 0 V

Front fog lamp switch: ON

Battery voltage

37

W/R

Front fog lamp (RH)

ON

Lighting switch must be in 
the 2ND position or AUTO 
position (headlamp is ON)

Front fog lamp switch: OFF

Approx. 0 V

Front fog lamp switch: ON

Battery voltage

38

B

Ground

ON

—

Approx. 0 V

49

L

CAN 

−

 

H

—

—

—

50

P

CAN 

−

 

L

—

—

—

51

B

Ground

ON

—

Approx. 0 V

Unit

Power source

Fuse and fusible link No.

BCM

Battery

F

21

Ignition switch ON or START position

1

Ignition switch ACC or ON position

6

IPDM E/R

Battery

71

88

78

LT-204

FRONT FOG LAMP

Refer to 

LT-198, "Wiring Diagram — F/FOG —"

 .

OK or NG

OK

>> GO TO 2.

NG

>> If fuse or fusible link is blown, be sure to eliminate cause of malfunction before installing new fuse

or fusible link. Refer to 

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

 .

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

>> Check harness for open or short between BCM and

fuse.

3. 

CHECK GROUND CIRCUIT

Check continuity between BCM harness connector and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Check harness ground circuit.

CONSULT-II Functions (BCM)

NKS003RC

Refer to 

LT-57, "CONSULT-II Functions (BCM)"

  in HEADLAMP (FOR USA) -XENON TYPE-.

Refer to 

LT-23, "CONSULT-II Functions (BCM)"

  in HEADLAMP (FOR USA) -CONVENTIONAL TYPE-.

Refer to 

LT-94, "CONSULT-II Functions (BCM)"

  in HEADLAMP (FOR CANADA).

CONSULT-II Functions (IPDM E/R)

NKS003RD

Refer to 

LT-59, "CONSULT-II Functions (IPDM E/R)"

  in HEADLAMP (FOR USA) -XENON TYPE-.

Refer to 

LT-25, "CONSULT-II Functions (IPDM E/R)"

  in HEADLAMP (FOR USA) -CONVENTIONAL TYPE-.

Refer to 

LT-96, "CONSULT-II Functions (IPDM E/R)"

  in HEADLAMP (FOR CANADA).

Terminal

Ignition switch position

(+)

(-)

OFF

ACC

ON

BCM 

connector

Terminal 

M1

11

Ground

Approx. 

0 V

Battery 
voltage

Battery 
voltage

38

Approx. 

0 V

Approx. 

0 V

Battery 
voltage

M2

42

Battery 
voltage

Battery 
voltage

Battery 
voltage

55

Battery 
voltage

Battery 
voltage

Battery 
voltage

PKIA5204E

BCM connector

Terminal

Ground

Continuity

M2

52

Yes

SKIB5125E