Nissan Titan A60. Manual - part 279

TRANSFER CONTROL UNIT

DLN-55

< ECU DIAGNOSIS INFORMATION >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

ECU DIAGNOSIS INFORMATION

TRANSFER CONTROL UNIT

Reference Value

INFOID:0000000006179475

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 po-

sition

• 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 po-

sition

• 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 po-

sition

• 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

DLN-56

< ECU DIAGNOSIS INFORMATION >

[TRANSFER: TX15B]

TRANSFER CONTROL UNIT

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 po-

sition

• 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 po-

sition

• 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 po-

sition

• 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 po-

sition

• 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 po-

sition

• 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 po-

sition

• 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

TRANSFER CONTROL UNIT

DLN-57

< ECU DIAGNOSIS INFORMATION >

[TRANSFER: TX15B]

C

E

F

G

H

I

J

K

L

M

A

B

DLN

N

O

P

Terminal Layout

WDIA0140E

Terminal

Wire 

color

Item

Condition

Data (Approx.)

1

L

CAN-H

–

–

2

P

CAN-L

–

–

3

L

K-LINE (CONSULT-III signal)

–

–

6

B

Ground

Always

0V

10

LG/B

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/L

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

BR/W Actuator position switch 4

4WD shift switch: 4H and 4LO

0V

4WD shift switch: 2WD

Battery voltage

14

G/W

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

R

4WD shift switch (4LO)

4WD shift switch: 4LO

Battery voltage

4WD shift switch: 2WD and 4H

0V

17

G/Y

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

W

Power supply
(Memory back-up)

Ignition switch: ON

Battery voltage

Ignition switch: OFF

Battery voltage

23

R/B

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

V

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

< ECU DIAGNOSIS INFORMATION >

[TRANSFER: TX15B]

TRANSFER CONTROL UNIT

25

L/W

Ignition switch monitor

Ignition switch: ON

Battery voltage

Ignition switch: OFF

0V

27

Y/R

Actuator motor power supply

Ignition switch: ON

Battery voltage

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

0V

28

Y/W

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/R

Actuator motor (-)

Always

0V

32

B

Ground

Always

0V

35

B/W

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

L

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

W/G

4LO indicator lamp

4LO indicator lamp: ON

0V

4LO indicator lamp: OFF

Battery voltage

38

W/B

4WD warning lamp

4WD warning lamp: ON

0V

4WD warning lamp: OFF

Battery voltage

39

L/B

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

Y

Transfer shut off relay

Ignition switch: ON

0V

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

Battery voltage

42

BR

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/R

Power supply

Ignition switch: ON

Battery voltage

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

0V

45

Y/R

Power supply

Ignition switch: ON

Battery voltage

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

0V

Terminal

Wire 

color

Item

Condition

Data (Approx.)