Nissan Pathfinder (2008 year). Manual - part 206

DLN-232

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

TRANSFER CONTROL UNIT

ECU DIAGNOSIS

TRANSFER CONTROL UNIT

Reference Value

INFOID:0000000001500071

VALUE ON THE DIAGNOSIS TOOL

CONSULT-III data monitor item

Monitored item [Unit]

Content

Condition

Display value

VHCL/S SEN·FR [km/h] 
or [mph]

Wheel speed (Front wheel)

Vehicle stopped

0 km/h (0 mph)

Vehicle running

CAUTION:

Check air pressure of tire under standard condi-
tion.

Approximately 
equal to the indica-
tion on speedome-
ter (Inside of 

±

10%)

VHCL/S SEN·RR [km/h] 
or [mph]

Wheel speed (Rear wheel)

Vehicle stopped

0 km/h (0 mph)

Vehicle running

CAUTION:

Check air pressure of tire under standard condi-
tion.

Approximately 
equal to the indica-
tion on speedome-
ter (Inside of 

±

10%)

ENGINE SPEED [rpm]

Engine speed

Engine stopped
(Engine speed: Less than 400 rpm)

0 rpm

Engine running
(Engine speed: 400 rpm or more)

Approximately 
equal to the indica-
tion on tachometer

BATTERY VOLT [V]

Power supply voltage for 
transfer control unit

Ignition switch: ON

Battery voltage

2WD SWITCH [ON/OFF]

Input condition from 4WD 
shift switch

4WD shift switch: 2WD

ON

4WD shift switch: 4H and 4LO

OFF

4H SWITCH [ON/OFF]

Input condition from 4WD 
shift switch

4WD shift switch: 4H

ON

4WD shift switch: 2WD and 4LO

OFF

4L SWITCH [ON/OFF]

Input condition from 4WD 
shift switch

4WD shift switch: 4LO

ON

4WD shift switch: 2WD and 4H

OFF

4L POSI SW [ON/OFF]

Condition of 4LO switch

• Vehicle stopped
• Engine running
• A/T selector lever “N” 

position

• Brake pedal depressed

4WD shift switch: 4LO

ON

Except the above

OFF

ATP SWITCH [ON/OFF]

Condition of ATP switch

• Vehicle stopped
• Engine running
• A/T selector lever “N” 

position

• Brake pedal depressed

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

 ON

Except the above

OFF

WAIT DETCT SW [ON/
OFF]

Condition of wait detection 
switch

• Vehicle stopped
• Engine running
• A/T selector lever “N” 

position

• Brake pedal depressed

4WD shift switch
: 4H and 4LO

ON

4WD shift switch: 2WD

OFF

4WD MODE [2H/4H/4L]

Control status of 4WD
(Output condition of 4WD 
shift indicator lamp and 
4LO indicator lamp)

4WD shift switch
(Engine running)

2WD

2H

4H

4H

4LO

4L

TRANSFER CONTROL UNIT

DLN-233

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

PHYSICAL VALUES

VHCL/S COMP [km/h] or 
[mph]

Vehicle speed

Vehicle stopped

0 km/h (0 mph)

Vehicle running

CAUTION:

Check air pressure of tire under standard condi-
tion.

Approximately 
equal to the indica-
tion on speedome-
ter (Inside of 

±

10%)

SHIFT ACT 1 [ON/OFF]

Output condition to actua-
tor motor (clockwise)

• Vehicle stopped
• Engine running
• A/T selector lever “N” 

position

• Brake pedal depressed

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

ON

Except the above

OFF

SHIFT AC MON1 [ON/
OFF]

Check signal for transfer 
control unit signal output

• Vehicle stopped
• Engine running
• A/T selector lever “N” 

position

• Brake pedal depressed

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

ON

Except the above

OFF

SHIFT ACT 2 [ON/OFF]

Output condition to actua-
tor motor (counterclock-
wise)

• Vehicle stopped
• Engine running
• A/T selector lever “N” 

position

• Brake pedal depressed

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

ON

Except the above

OFF

SHIFT AC MON2 [ON/
OFF]

Check signal for transfer 
control unit signal output

• Vehicle stopped
• Engine running
• A/T selector lever “N” 

position

• Brake pedal depressed

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

ON

Except the above

OFF

SHIFT ACT/R MON [ON/
OFF]

Operating condition of ac-
tuator motor relay (integrat-
ed in transfer control unit)

• Vehicle stopped
• Engine running
• A/T selector lever “N” 

position

• Brake pedal depressed

When 4WD shift switch is 
operated

ON

When 4WD shift switch is 
not operated

OFF

SHIFT POS SW1 [ON/
OFF]

Condition of actuator posi-
tion switch 1

• Vehicle stopped
• Engine running
• A/T selector lever “N” 

position

• Brake pedal depressed

4WD shift switch: 2WD 
and 4LO

ON

4WD shift switch: 4H

OFF

SHIFT POS SW2 [ON/
OFF]

Condition of actuator posi-
tion switch 2

4WD shift switch: 4LO

ON

4WD shift switch: 2WD 
and 4H

OFF

SHIFT POS SW3 [ON/
OFF]

Condition of actuator posi-
tion switch 3

4WD shift switch: 2WD 
and 4H

ON

4WD shift switch: 4LO

OFF

SHIFT POS SW4 [ON/
OFF]

Condition of actuator posi-
tion switch 4

4WD shift switch: 4H and 
4LO

ON

4WD shift switch: 2WD

OFF

4WD FAIL LAMP [ON/
OFF]

4WD warning lamp condi-
tion

4WD warning lamp: ON

ON

4WD warning lamp: OFF

OFF

2WD IND [ON/OFF]

Rear indicator of 4WD shift 
indicator lamp condition

Rear indicator of 4WD shift indicator lamp: ON

ON

Rear indicator of 4WD shift indicator lamp: OFF

OFF

4H IND [ON/OFF]

Front and center indicator 
of 4WD shift indicator lamp 
condition

Front and center indicator of 4WD shift indicator lamp
: ON

ON

Front and center indicator of 4WD shift indicator lamp
: OFF

OFF

4L IND [ON/OFF]

4LO indicator lamp condi-
tion

4LO indicator lamp: ON

ON

4LO indicator lamp: OFF

OFF

Monitored item [Unit]

Content

Condition

Display value

DLN-234

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

TRANSFER CONTROL UNIT

Terminal Layout

WDIA0140E

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

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

• 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

TRANSFER CONTROL UNIT

DLN-235

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

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

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

• 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.)

DLN-236

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

TRANSFER CONTROL UNIT

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.)

TRANSFER CONTROL UNIT

DLN-237

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

Wiring Diagram

INFOID:0000000001500072

ALDWA0037GB

DLN-238

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

TRANSFER CONTROL UNIT

ALDWA0038GB

TRANSFER CONTROL UNIT

DLN-239

< ECU DIAGNOSIS >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

ALDWA0039GB