High-current pins that physically move the fuel metering mechanism inside the pump.
Heavy-gauge ground connected directly to the engine block or frame. Fuel Injection Pump Controls (Zexel VP/Covor) nissan zexel ecu pinout
The you are trying to solve (e.g., engine swap wiring, fixing a limp mode) High-current pins that physically move the fuel metering
When the starter turned, a relay clicked and a pin showed switched battery voltage — fuel pump relay control. Injector drivers switched to ground on cranking, visible as pulsed continuity. Coil outputs showed pulsed primary driver activity when cranking with spark tester attached. Injector drivers switched to ground on cranking, visible
Understanding the Nissan Zexel Engine Control Unit (ECU) pinout
Actuators are the muscles of the system. The ECU switches the ground side of these circuits internally using high-power transistors (MOSFETs) to control fluid dynamics and mechanical pressures. Fuel Injection Pump Actuators
Before looking at pinouts, you must identify the connector type. There are two main generations: