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.
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HOMESERVICE MANUALSNISSAN-DATSUN2003FRONTIER 2WD L4-2.4L (KA24DE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULEDESCRIPTION AND OPERATION
2003 Nissan-Datsun Frontier 2WD L4-2.4L (KA24DE)
Body Control Module: Description and Operation
2003 Nissan-Datsun Frontier 2WD L4-2.4L (KA24DE)SECTION Description and Operation
SMART ENTRANCE CONTROL UNIT
Description
The following Systems are controlled by the smart entrance control unit.
- Warning chime
- Rear window defogger timer
- Power window
- Power door lock
- Remote keyless entry
- Vehicle security
- Room lamp
For detailed description and wiring diagrams, refer to the relevant information for the each system.
The control unit receives data from the switches and sensors to control their corresponding system relays and actuators.
Description
The following Systems are controlled by the smart entrance control unit.
- Warning chime
- Rear window defogger timer
- Power window
- Power door lock
- Remote keyless entry
- Vehicle security
- Room lamp
For detailed description and wiring diagrams, refer to the relevant information for the each system.
The control unit receives data from the switches and sensors to control their corresponding system relays and actuators.
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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.