Nissan Frontier D40. Manual - part 259

TRANSFER CONTROL UNIT

DLN-57

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

Terminal Layout

WDIA0260E

Terminal

Wire 

color

Item

Condition

Data (Approx.)

1

L

CAN-H

–

–

2

P

CAN-L

–

–

3

SB

K-LINE (CONSULT-III signal)

–

–

6

B

Ground (M/T models)

Always

0V

10

LG

Actuator position switch 1

• Vehicle stopped
• Engine running
• A/T selector le-

ver “N” position

• Brake pedal de-

pressed

4WD shift switch: 2WD and 4LO

0V

4WD shift switch: 4H

Battery voltage

11

W

Actuator position switch 2

4WD shift switch: 4LO

0V

4WD shift switch: 2WD and 4H

Battery voltage

12

BR

Actuator position switch 3

4WD shift switch: 2WD and 4H

0V

4WD shift switch: 4LO

Battery voltage

13

L

Actuator position switch 4

4WD shift switch: 4H and 4LO

0V

4WD shift switch: 2WD

Battery voltage

14

G

4WD shift switch (2WD)

Ignition switch: ON

4WD shift switch: 2WD

Battery voltage

4WD shift switch: 4H and 4LO

0V

15

O

4WD shift switch (4H)

4WD shift switch: 4H

Battery voltage

4WD shift switch: 2WD and 4LO

0V

16

W

4WD shift switch (4LO)

4WD shift switch: 4LO

Battery voltage

4WD shift switch: 2WD and 4H

0V

17

O

Wait detection switch

• Vehicle stopped
• Engine running
• A/T selector le-

ver “N” position

• Brake pedal de-

pressed

4WD shift switch: 4H and 4LO

0V

4WD shift switch: 2WD

Battery voltage

18

B

Ground

Always

0V

19

R

Power supply
(Memory back-up)

Ignition switch: ON

Battery voltage

Ignition switch: OFF

Battery voltage

23

R

ATP switch (A/T models)

• Vehicle stopped
• Engine running
• A/T selector le-

ver “N”

• Brake pedal de-

pressed

4WD shift switch
: 4H to 4LO or 4LO to 4H
(While actuator motor is operating.)

0V

Except the above

Battery voltage

24

Y

4LO switch

• Vehicle stopped
• Engine running
• A/T selector le-

ver “N” position

• Brake pedal de-

pressed

4WD shift switch: 4LO

0V

Except the above

Battery voltage

DLN-58

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[TRANSFER: TX15B]

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25

W/G

Ignition switch monitor

Ignition switch: ON

Battery voltage

Ignition switch: OFF

0V

27

L

Actuator motor power supply

Ignition switch: ON

Battery voltage

Ignition switch: OFF (5 seconds after ingnition switch is turned 
OFF)

0V

28

SB

Actuator motor (+)

• Vehicle stopped
• Engine running
• A/T selector le-

ver “N” position

• Brake pedal de-

pressed

When 4WD shift switch is operated (while 
actuator motor is operating)

Battery voltage 

→

 0V

When 4WD shift switch is not operated

0V

31

G

Actuator motor (-)

Always

0V

32

B

Ground

Always

0V

33

P

Park/Neutral position switch
(M/T models)

Ignition switch:ON

M/T shift lever neutral position

0V

Except the above

Battery voltage

35

V

4WD shift indicator lamp
(Rear indicator)

Engine running

Rear indicator of 4WD shift indicator lamp
: ON

0V

Rear indicator of 4WD shift indicator lamp
: OFF

Battery voltage

36

BR

4WD shift indicator lamp
(Front and center indicator)

Front and center indicator of 4WD shift in-
dicator lamp: ON

0V

Front and center indicator of 4WD shift in-
dicator lamp: OFF

Battery voltage

37

O

4LO indicator lamp

4LO indicator lamp: ON

0V

4LO indicator lamp: OFF

Battery voltage

38

GR

4WD warning lamp

4WD warning lamp: ON

0V

4WD warning lamp: OFF

Battery voltage

39

LG

ATP warning lamp
(A/T models)

• Vehicle stopped
• Engine running
• A/T selector le-

ver “P” position

• Brake pedal de-

pressed

4WD shift switch: 4H to 4LO or 4LO to 4H
(While actuator motor is operating.)

Battery voltage

Except the above

0V

40

V

Transfer shut off relay

Ignition switch: ON

0V

Ignition switch: OFF (5 seconds after ingnition switch is turned 
OFF)

Battery voltage

42

LG

Transfer shift high relay

• Vehicle stopped
• Engine running
• A/T selector le-

ver “N” position

• Brake pedal de-

pressed

4WD shift switch: 2WD to 4H or 4H to 4LO 
or 2WD to 4LO

0V

Except the above

Battery voltage

44

Y

Power supply

Ignition switch: ON

Battery voltage

Ignition switch: OFF (5 seconds after ingnition switch is turned 
OFF)

0V

45

GR

Power supply

Ignition switch: ON

Battery voltage

Ignition switch: OFF (5 seconds after ingnition switch is turned 
OFF)

0V

Terminal

Wire 

color

Item

Condition

Data (Approx.)

TRANSFER CONTROL UNIT

DLN-59

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

CAUTION:

When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.

NOTE:
Data are reference value and are measured between each terminal and ground.

47

O

Transfer shift high relay moni-
tor

• Vehicle stopped
• Engine running
• A/T selector le-

ver “N” position

• Brake pedal de-

pressed

4WD shift switch: 2WD to 4H or 4H to 4LO 
or 2WD to 4LO (while actuator motor is op-
erating)

Battery voltage 

→

 0V

Except the above

0V

48

R

Transfer shift low relay moni-
tor

4WD shift switch: 4LO to 4H or 4H to 2WD 
or 4LO to 2WD (while actuator motor is op-
erating)

Battery voltage 

→

 0V

Except the above

0V

50

Y

Transfer shift low relay

4WD shift switch: 4LO to 4H or 4H to 2WD 
or 4LO to 2WD

0V

Except the above

Battery voltage

Terminal

Wire 

color

Item

Condition

Data (Approx.)

DLN-60

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[TRANSFER: TX15B]

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Wiring Diagram

INFOID:0000000005275459

ABDWA0054GB