2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE

Power Door Lock Operation

WARNING: This page is about a different car, the 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

When BCM receives a LOCK signal from electronic key, BCM will then send a LOCK signal [when all door switches are OFF (all doors are closed)]

  • from its terminal 67 (DATA LINE A-3)
  • to driver door control unit (LCU01) terminal 8.

When an UNLOCK signal is sent from electronic key once, driver's door will be unlocked.

Then, if an UNLOCK signal is sent from electronic key again within 3 seconds, all other doors will be unlocked.

For detailed description, refer to "POWER DOOR LOCK SYSTEM ".

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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