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.
2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE
Terminals and Reference Value for Audio Unit (Base System)
WARNING: This page is about a different car, the 2006 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
TERMINALS AND REFERENCE VALUE FOR AUDIO UNIT (BASE SYSTEM) CHART
| Terminal (Wire color) | Item | Signal input/ output | Condition | Reference value (Approx.) | Example of symptom | ||
|---|---|---|---|---|---|---|---|
| + | - | Ignition switch | Operation | ||||
| 2 (BR) | 1(L) | Audio sound signal front LH | Output | ON | Receive audio signal | No sound from front door speaker LH or front tweeter LH. | |
| 4(LG) | 3(R) | Audio sound signal front RH | Output | ON | Receive audio signal | No sound from front door speaker RH or front tweeter RH. | |
| 6(Y) | Ground | Battery power | Input | - | - | Battery voltage | System does not work properly. |
| 7(GR) | Ground | Illumination control signal | Input | ON | Illumination control switch is operated by lighting switch in 1st position. | Changes between 0 and 12V | Audio unit illumination cannot be controlled. |
| 8(R) | Ground | Illumination signal | Input | OFF | Lighting switch is in 1st position. | Battery voltage | Audio unit illumination does not come on when lighting switch is in 1st position. |
| Lighting switch is OFF. | 3V or less | ||||||
| 10(G/B) | Ground | ACC power | Input | ACC | Ignition switch ACC or ON | Battery voltage | System does not work properly. |
| 14(G) | 13(B) | Audio sound signal rear LH | Output | ON | Receive audio signal | No sound from rear door speaker LH. | |
| 16 (GR) | 15(O) | Audio sound signal rear RH | Output | ON | Receive audio signal | No sound from rear door speaker RH. | |
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.