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

Removal and Installation of BCM: Removal

WARNING: This page is about a different car, the 2007 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If possible, before removing BCM, retrieve current BCM configuration to use for reference when configuring brand-new BCM after installation. Refer to "CONFIGURATION ".

Disconnect negative battery cable.
Remove the parking brake pedal assembly. Refer to "PARKING BRAKE CONTROL ".
Remove the BCM (1) by removing the screw (A) and disconnecting the harness connectors (2).

Fig 1: Identifying ECM Screw And Harness Connectors
Courtesy of NISSAN MOTOR CO., U.S.A.
- <== : Front

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.