Door Motor Control
WARNING: This page is about a different car, the 2018 Nissan NV3500 HD, 2018 Nissan NV2500 HD, and 2018 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.
- A Local Control Unit (LCU) is built into each door motor and detects the door position by using a Position Balanced Resistor (PBR).
- Each door motor LCU has a unique address. The front air control communicates with the door motor LCUs by using each door's unique communication address. The front air control sends requested door position commands to each door motor LCU via a Local Interconnect Network (LIN) communication line using a communication protocol called LIN 2.0. The LIN-Bus is a vehicle bus standard used within current automotive network architectures. The LIN specification is enforced by the LIN-consortium, with the first exploited version being 1.1, released in 1999. Since then the specification has evolved to version 2.1 to meet current networking needs. Each door motor's LCU receives the command and sends back a door position feedback signal.
- Each LCU controls each door to the appropriate position depending on the control signal from the front air control. When the door movement is complete, the LCU transmits a signal to the front air control indicating that the door movement is complete.