Terminal Layout

WARNING: This page is about a different car, the 2013 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Transfer Control Unit Connector End View

Courtesy of NISSAN NORTH AMERICA, INC.

Terminal	Wire color	Item	Condition		Data (Approx.)
1	L	CAN-H	-		-
2	P	CAN-L	-		-
3	SB	K-LINE (CONSULT signal)	-		-
6	B	Ground	Always		0V
10	LG	Actuator position switch 1	Vehicle stopped Engine running A/T selector lever "N" position Brake pedal depressed	4WD shift switch: 2WD and 4LO	0V
10	LG	Actuator position switch 1		4WD shift switch: 4H	Battery voltage
11	W	Actuator position switch 2		4WD shift switch: 4LO	0V
11	W	Actuator position switch 2		4WD shift switch: 2WD and 4H	Battery voltage
12	BR	Actuator position switch 3		4WD shift switch: 2WD and 4H	0V
12	BR	Actuator position switch 3		4WD shift switch: 4LO	Battery voltage
13	L	Actuator position switch 4		4WD shift switch: 4H and 4LO	0V
13	L	Actuator position switch 4		4WD shift switch: 2WD	Battery voltage
14	G	4WD shift switch (2WD)	Ignition switch: ON	4WD shift switch: 2WD	Battery voltage
14	G	4WD shift switch (2WD)		4WD shift switch: 4H and 4LO	0V
15	O	4WD shift switch (4H)		4WD shift switch: 4H	Battery voltage
15	O	4WD shift switch (4H)		4WD shift switch: 2WD and 4LO	0V
16	W	4WD shift switch (4LO)		4WD shift switch: 4LO	Battery voltage
16	W	4WD shift switch (4LO)		4WD shift switch: 2WD and 4H	0V
17	O	Wait detection switch	Vehicle stopped Engine running A/T selector lever "N" position Brake pedal depressed	4WD shift switch: 4H and 4LO	0V
17	O	Wait detection switch		4WD shift switch: 2WD	Battery voltage
18	B	Ground	Always		0V
19	R	Power supply (Memory back-up)	Ignition switch: ON		Battery voltage
19	R	Power supply (Memory back-up)	Ignition switch: OFF		Battery voltage
23	R	ATP switch	Vehicle stopped Engine running A/T selector lever "N" Brake pedal depressed	4WD shift switch: 4H to 4LO or 4LO to 4H (While actuator motor is operating.)	0V
23	R	ATP switch		Except the above	Battery voltage
24	Y	4LO switch	Vehicle stopped Engine running A/T selector lever "N" position Brake pedal depressed	4WD shift switch: 4LO	0V
24	Y	4LO switch		Except the above	Battery voltage
25	W/G	Ignition switch monitor	Ignition switch: ON		Battery voltage
25	W/G	Ignition switch monitor	Ignition switch: OFF		0V
27	L	Actuator motor power supply	Ignition switch: ON		Battery voltage
27	L	Actuator motor power supply	Ignition switch: OFF (5 seconds after ignition switch is turned OFF)		0V
28	SB	Actuator motor (+)	Vehicle stopped Engine running A/T selector lever "N" position Brake pedal depressed	When 4WD shift switch is operated (while actuator motor is operating)	Battery voltage → 0V
31	G	Actuator motor (-)		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
33	P	Park/Neutral position switch (M/T models)	Ignition switch: ON	Except the above	Battery voltage
40	V	Transfer shut off relay	Ignition switch: ON		0V
40	V	Transfer shut off relay	Ignition switch: OFF (5 seconds after ignition switch is turned OFF)		Battery voltage
42	LG	Transfer shift high relay	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	0V
42	LG	Transfer shift high relay		Except the above	Battery voltage
44	Y	Power supply	Ignition switch: ON		Battery voltage
44	Y	Power supply	Ignition switch: OFF (5 seconds after ignition switch is turned OFF)		0V
45	GR	Power supply	Ignition switch: ON		Battery voltage
45	GR	Power supply	Ignition switch: OFF (5 seconds after ignition switch is turned OFF)		0V
47	O	Transfer shift high relay monitor	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 (while actuator motor is operating)	Battery voltage → 0V
47	O	Transfer shift high relay monitor		Except the above	0V
48	R	Transfer shift low relay monitor		4WD shift switch: 4LO to 4H or 4H to 2WD or 4LO to 2WD (while actuator motor is operating)	Battery voltage → 0V
48	R	Transfer shift low relay monitor		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
50	Y	Transfer shift low relay		Except the above	Battery voltage

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.