Infiniti M35/M45 Y50. Manual — part 877

HEADLAMP (FOR USA) - XENON TYPE -

LT-53

C

D

E

F

G

H

I

J

L

M

A

B

LT

Terminals and Reference Values for BCM

NKS003OQ

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"

.

Terminal

No.

Wire

color

Signal name

Measuring condition

Reference value

Ignition

switch

Operation or condition

2

L/R

Combination
switch input 5

ON

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

Lighting switch HI beam
(Operates only HI beam
switch)

Approx. 1.0 V

Lighting switch 2ND

Approx. 2.0 V

OFF

Approx. 0 V

3

O/L

Combination
switch input 4

ON

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

Any of several con-
ditions below

●

Lighting switch 2ND

●

Lighting switch
PASSING (Operates
only PASSING switch)

Approx. 1.0 V

OFF

Approx. 0 V

11

V

Ignition switch

(ACC)

ACC

—

Battery voltage

PKIB4957J

PKIB4953J

PKIB4957J

LT-54

HEADLAMP (FOR USA) - XENON TYPE -

34

L

Combination
switch output 3

ON

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

Any of several con-
ditions below

●

Lighting switch 2ND

●

Lighting switch HI
beam (Operates only
HI beam switch)

Approx. 1.2 V

OFF

Approx. 7.0 - 7.5 V

35

SB

Combination
switch output 2

ON

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

Any of several con-
ditions below

●

Lighting switch 2ND

●

Lighting switch
PASSING (Operates
only PASSING switch)

Approx. 1.2 V

OFF

Approx. 7.0 - 7.5 V

38

W

Ignition switch

(ON)

ON

—

Battery voltage

37

LG

Key switch sig-

nal

OFF

Intelligent Key is inserted into key slot.

Battery voltage

Intelligent Key is removed from key slot.

Approx. 0 V

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

Terminal

No.

Wire

color

Signal name

Measuring condition

Reference value

Ignition

switch

Operation or condition

PKIB4958J

PKIB4960J

PKIB4958J

PKIB4960J

HEADLAMP (FOR USA) - XENON TYPE -

LT-55

C

D

E

F

G

H

I

J

L

M

A

B

LT

Terminals and Reference Values for IPDM E/R

NKS003OR

How to Perform Trouble Diagnoses

NKS003OS

1.

Confirm the symptom or customer complaint.

2.

Understand operation description and function description. Refer to

LT-42, "System Description"

.

3.

Perform the Preliminary Check. Refer to

LT-56, "Preliminary Check"

.

4.

Check symptom and repair or replace the cause of malfunction.

5.

Does the headlamp operate normally? If YES, GO TO 6. If NO, GO TO 4.

6.

INSPECTION END

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

Terminal

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

20

R

Headlamp low (RH)

ON

Lighting switch 2ND
position

OFF

Approx. 0 V

ON

Battery voltage

27

BR

Headlamp high (RH)

ON

Lighting switch HIGH
or PASSING position

OFF

Approx. 0 V

ON

Battery voltage

28

R/Y

Headlamp high (LH)

ON

Lighting switch HIGH
or PASSING position

OFF

Approx. 0 V

ON

Battery voltage

30

R/B

Headlamp low (LH)

ON

Lighting switch 2ND
position

OFF

Approx. 0 V

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

LT-56

HEADLAMP (FOR USA) - XENON TYPE -

Preliminary Check

NKS003OT

CHECK POWER SUPPLY AND GROUND CIRCUIT

1.

CHECK FUSES AND FUSIBLE LINK

Check for blown fuses and fusible link.

Refer to

LT-47, "Wiring Diagram — H/LAMP —"

.

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

>> Repair harness or connector.

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

72

74

76

78

86

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