Man F2000 Wiring Diagram -

Engine cranks strongly (starter works) but will not fire (D2866 EDC engine).

The wiring diagram shows a 3-pin connector at the injection pump: Pin 1 (Ground), Pin 2 (Signal from ECU – 0-5V), Pin 3 (Actuator power). Measure voltage between pin 3 and pin 1. You need ~5V at key-on. No voltage? Trace the wire back to ECU pin A15. A broken wire here is common. man f2000 wiring diagram

Probe pin 87 of the ECU relay socket. With ignition on, you should see 12V. If not, the ECU isn't grounding the relay coil. Check the ground path (pin 37 to chassis). Engine cranks strongly (starter works) but will not