| Injector Pin | Function | Connects to Pump Pin | | :--- | :--- | :--- | | 1 | Solenoid High Side | Pin 9 | | 2 | Solenoid Low Side | Pin 10 | | 3 | Shield/Ground | Pin 11 | | 4 | Temp Sensor (NTC) | Pin 12 |
The Bosch Denoxtronic 2.2 is the industry standard for Selective Catalytic Reduction (SCR) in Euro 6 and US EPA 10 heavy-duty vehicles. Unlike its predecessor (2.0), the 2.2 system integrates the dosing control unit into the pump itself, drastically changing the wiring logic. Bosch Denoxtronic 2.2 Wiring Diagram
Short circuit to ground on Pin 9 or 10. This usually kills the internal H-Bridge driver inside the Denoxtronic pump, requiring a full pump replacement. 4. Diagnostic Logic via Wiring (No Diagram Needed) If you are looking at a wiring diagram to solve a fault, use this logic matrix: | Injector Pin | Function | Connects to