Essential for sequential fuel injection timing. Actuator Outputs (Control)

The M7.4.4 series features a multi-plug configuration split into clear logical segments. It is highly prevalent in older Peugeot/Citroën cars and Polaris utility vehicles. Bosch ME7.4.4/M7.4.4 ECU Overview | PDF - Scribd

The Bosch M7 generation introduced advanced torque-based electronic throttle control (Drive-by-Wire) and highly sophisticated fuel management. Because these units handle everything from ignition timing to network communications, their wiring harnesses are densely packed.

Use a noid light across the injector harness (A3 ground side to battery+). Crank engine – the light should flash. No flash indicates ECU driver failure or no crank signal.

Because pinouts are highly dependent on the vehicle make, you should refer to specific guides for your exact unit: