2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

System Description: Outline

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

The auto light control system has an optical sensor inside it that detects outside brightness.

When the lighting switch is in "AUTO" position, it automatically turns on/off the parking lamps and the headlamps in accordance with the ambient light. Sensitivity can be adjusted in four steps. For the details of the setting, Refer to "SETTING CHANGE FUNCTIONSΒ  ".

Optical sensor, power is supplied

  • from BCM (body control module) terminal 45
  • to optical sensor terminal 1.

Optical sensor, ground is supplied

  • from BCM (body control module) terminal 53
  • to optical sensor terminal 3.

When ignition switch is turn to "ON" position, and

When outside brightness is darker than prescribed level, input is supplied

  • to BCM (body control module) terminal 38
  • from optical sensor terminal 2.

The headlamps will then illuminate. For a description of headlamp operation, Refer to "SYSTEM DESCRIPTIONΒ  ".

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:

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

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