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.

2021 Nissan-Datsun NV2500 HD SFACTORY OEM SERVICE PROCEDURE

Component Description

No.	Component	Function
1.	BCM (Body Control Module)	Supplies power supply to power window switch. Controls retained power. Refer to Component Location for detailed component location.
2.	Main power window and door lock/unlock switch	Directly controls power window motors of both doors. Contains a lock switch that opens or completes the ground circuit of the power window and door lock/unlock switch RH, disabling or enabling the RH switch operation. Refer to Main Power Window and Door Lock/Unlock Switch .
3.	Power window and door lock/unlock switch RH	Controls front power window motor RH. Refer to Power Window and Door Lock/Unlock Switch RH .
4.	Front power window motor LH	Refer to Front Power Window Motor LH .
5.	Front power window motor RH	Refer to Front Power Window Motor RH .
6.	Front door switch LH (RH similar)	Transmits door open/close condition to BCM. Refer to Front Door Switch LH .

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.