Infiniti M45 (Y34). Manual - part 627

HEADLAMP (FOR USA)

LT-15

C

D

E

F

G

H

I

J

L

M

A

B

LT

TKWA0521E

LT-16

HEADLAMP (FOR USA)

TKWA0522E

HEADLAMP (FOR USA)

LT-17

C

D

E

F

G

H

I

J

L

M

A

B

LT

Terminals and Reference Value for Headlamp Battery Saver Control Unit

AKS002F0

Terminal 

No.

Wire 

color

Item

Operation or condition

Reference value

1

W/B

Ignition switch ON or 
START

Ignition switch

OFF or ACC

Approx. 0V

ON or START

Battery voltage

2

W/PU

Headlamp relay out 1

Ignition switch
(with lighting switch 
except OFF or 1ST)

OFF

or 

ACC

More than 45 seconds after ignition 
switch is turned OFF or ACC

Battery voltage

Within 45 seconds after ignition 
switch is turned OFF or ACC

Approx. 0V

ON or START

Approx. 0V

Headlamps illuminate by auto light control.

Approx. 0V

3

R/B

Headlamp switch 1

Lighting switch

1ST

2.4V

PASS or 2ND

Approx. 0V

Headlamps illuminate by auto light control.

Approx. 0V

4

B

Ground

—

Approx. 0V

5

L

Tail lamp switch 1

Lighting switch

OFF

Battery voltage

1ST or 2ND

Approx. 0V

6

LG/B

Tail lamp relay out 1

Ignition switch
(with lighting switch 
1ST or 2ND)

OFF 

or 

ACC

More than 45 seconds after ignition 
switch is turned OFF or ACC

Battery voltage

Within 45 seconds after ignition 
switch is turned OFF or ACC

Approx. 0V

ON or START

Approx. 0V

Headlamps illuminate by auto light control. 

Approx. 0V

7

Y/G

Battery power supply

—

Battery voltage

8

W/PU

Headlamp relay out 2

Ignition switch
(with lighting switch 
except OFF or 1ST)

OFF 

or 

ACC

More than 45 seconds after ignition 
switch is turned OFF or ACC

Battery voltage

With 45 seconds after ignition 
switch is turned OFF or ACC

Approx. 0V

ON or START

Approx. 0V

Headlamps illuminate by auto light control.

Approx. 0V

9

R/B

Headlamp switch 2

Lighting switch

1ST

2.4V

PASS or 2ND

Approx. 0V

Headlamps illuminate by auto light control.

Approx. 0V

10

Y/R

RAP input signal 

Ignition switch

OFF or ACC (After more than 45 seconds 
with ignition switch turned OFF or ACC)

Battery voltage

ON or START

Approx. 0V

11

B

Ground

—

Approx. 0V

13

L

Tail lamp switch 2

Lighting switch

OFF

Battery voltage

1ST or 2ND

Approx. 0V

14

LG/B

Tail lamp relay out 2

Ignition switch
(with lighting switch 
1ST or 2ND)

OFF 

or 

ACC

More than 45 seconds after ignition 
switch is turned OFF or ACC

Battery voltage

Within 45 seconds after ignition 
switch is turned OFF or ACC

Approx. 0V

ON or START

Approx. 0V

Headlamps illuminate by auto light control.

Approx. 0V

LT-18

HEADLAMP (FOR USA)

Terminals and Reference Value for BCM

AKS002F1

Work Flow

AKS002F2

1.

Confirm the symptom or customer complaint.

2.

Understand system description. Refer to 

LT-6, "System Description"

 .

3.

Perform the preliminary check. Refer to 

LT-19, "Preliminary Check"

 .

4.

Find the cause of malfunction following the symptom chart and repair or replace as necessary. Refer to

LT-24, "Symptom Chart 1"

  (for headlamp system) or 

LT-24, "Symptom Chart 2"

  (for auto light system).

5.

Does the headlamp system or the auto light system operate normally? If YES, GO TO 6. If NO, GO TO 4.

6.

INSPECTION END

Terminal 

No.

Wire 

color

Item

Measuring condition

Reference value

Ignition 

switch

Operation or condition

3

R/L

Tail lamp signal

ON

Lighting switch: 1st

ON

Battery voltage

OFF

Approx. 0V

5

W/PU

Headlamp relay control signal

ON

Lighting switch: 
AUTO

Light is applied to 
optical sensor.

Battery voltage

Light is not applied to 
optical sensor.

Approx. 0V

11

LG/B

Tail lamp relay control signal

ON

Light switch: AUTO

Light is applied to 
optical sensor.

Battery voltage

Light is not applied to 
optical sensor.

Approx. 0V

14

Y/L

Lighting switch AUTO signal

ON

Lighting switch

AUTO

Approx. 0V

OFF

8V

17

BR/Y

Data link RX

—

—

—

18

P

Data link TX

—

—

—

30

PU

Communication signal TX
(BCM-AV: Transmission)

—

—

—

31

LG

Communication signal RX
(AV-BCM: Receiving)

—

—

—

37

LG

Front door switch (Passenger 
side) signal

OFF

Front door switch 
(Passenger side)

ON (open)

Approx. 0V

OFF (close)

Battery voltage

52

G/R

Auto light sensor signal

ON

Light is applied to optical sensor.

3V or more

Light is not applied to optical sensor.

Approx. 0V

56

B

Ground

—

—

Approx. 0V

58

Y/B

Auto light sensor ground

ON

—

Approx. 0V

59

SB

Auto light sensor power supply

ON

—

5V or more

60

L/OR

Ignition switch ACC or ON

ACC

—

Battery voltage

68

W/B

Ignition switch ON or START

ON

—

Battery voltage

105

Y/L

Battery power supply

OFF

—

Battery voltage

113

B

Ground

—

—

Approx. 0V

135

Y/G

RAP output signal

OFF

When headlamp battery saver timer is oper-
ated

Approx. 0V

142

R/Y

Front door switch (Driver side) 
signal

OFF

Front door switch 
(Driver side) signal

ON (open)

Approx. 0V

OFF (close)

Battery voltage