Safety Warning

DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.

2008 Nissan-Datsun Sentra Base, Automatic CVTFACTORY OEM SERVICE PROCEDURE

Terminals and Reference Values for Audio Unit (Premium System)

AUDIO UNIT CONNECTOR TERMINAL VALUES REFERENCE

Terminal (Wire color)		Item	Signal input/output	Condition		Reference value (Approx.)	Example of symptom
+	-	Item	Signal input/output	Ignition switch	Operation	Reference value (Approx.)	Example of symptom
1 (G)	Ground	Amp. ON/OFF signal	Output	ON	-	More than 6.5V	Audio amplifier does not work properly.
2 (W)	3 (B)	Audio sound signal front LH	Output	ON	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.	No sound from front door speaker LH or tweeter LH.
4 (LG)	5 (V)	Audio sound signal rear LH	Output	ON	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.	No sound from rear speaker assembly LH.
6 (P)	Ground	Remote control A	Input	ON	Press Phone/End switch	0V	Steering wheel audio controls do not function
					Press SEEK UP switch	1.7V
					Press VOL UP switch	3.3V
					Except for above	5.0V
7 (GR)	Ground	ACC signal	Input	ON	Ignition switch ACC or ON	Battery voltage	System does not work properly.
11 (B/W)	12 (L)	Audio sound signal front RH	Output	ON	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.	No sound from front door speaker RH or tweeter RH.
13 (BR)	14 (Y)	Audio sound signal rear RH	Output	ON	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.	No sound from rear speaker assembly RH.
15 (LG)	-	Remote control ground	Input	-	-	-	Steering wheel audio controls do not function
16 (L)	Ground	Remote control B	Input	ON	Press Phone/Send switch	0V	Steering wheel audio controls do not function
					Press SEEK DOWN switch	1.7V
					Press VOL DOWN switch	3.3V
					Except for above	5.0V
19 (Y)	Ground	Battery power	Input	-	-	Battery voltage	System does not work properly.
20	-	Shield ground	-	-	-	-	-
31 (P)	-	CAN-L	-	-	-	-	-
32 (L)	-	CAN-H	-	-	-	-	-
34 (R)	33 (G)	Audio left channel sound signal from satellite radio tuner	Input	ON	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.	No sound from satellite radio tuner left channel.
36 (B)	35 (W)	Audio right channel sound signal from satellite radio tuner	Input	ON	Receive audio signal	Courtesy of NISSAN MOTOR CO., U.S.A.	No sound from satellite radio tuner right channel.
37	-	Shield ground (audio signal)	-	-	-	0V	-
38	-	Shield ground (data)	-	-	-	0V	-
40 (L)	Ground	Satellite radio tuner request to audio unit	Input	ON	Turn audio unit ON	5V	Satellite radio tuner does not operate properly.
41 (LG)	Ground	Audio RX	Input	ON	Receive data	Courtesy of NISSAN MOTOR CO., U.S.A.	Satellite radio tuner audio information does not display properly.
42 (V)	Ground	Audio TX	Output	ON	Transmit data	Courtesy of NISSAN MOTOR CO., U.S.A.	Satellite radio tuner audio information does not display properly.
45	-	LED ground	Input	ON	Audio ON	0V	Display unit will not work.
46	Ground	LED power line	Output	ON	Audio ON	9V
47	-	LED ground	Input	ON	Audio ON	0V
48	Ground	Serial output	Output	ON	Audio ON	-
49	Ground	Reset	Output	ON	Audio ON	5V
50	Ground	Shift clock	Input	ON	Audio ON	-
51	Ground	Serial input	Input	ON	Audio ON	-
52	Ground	Command data	Input	ON	Audio ON	-
53	Ground	Command data	Input	ON	Audio ON	-
54	Ground	Display power line	Output	ON	Audio ON	5V
55	-	Display unit ground	Input	ON	Audio ON/OFF	0V
56	-	Display unit ground	Input	ON	Audio ON/OFF	0V

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.
• Brakes feel soft, pull hard to one side, or make grinding noises.
• The engine overheats, stalls repeatedly, or misfires under load.
• You are missing required tools, torque specs, or safe lifting equipment.
• You are not confident in the next step or safety outcome.

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