Bosch M797 Pinout Better [better] Online

Usually requires a 1k Ohm resistor to ground on a specific pad on the PCB (refer to your specific tool’s hardware manual). Sensor and Actuator Wiring

| Issue in common pinouts | Improved definition | |------------------------|----------------------| | Vague “sensor ground” | Pins A18, B12 – separate analog sensor ground (0 V reference) | | Missing K‑line diagnostics | Pin B22 – ISO 9141‑2 K‑line (7.5 V typical) | | Injector channels swapped | A8 → Cyl 1, A9 → Cyl 2, A10 → Cyl 3, A11 → Cyl 4 (verified via oscilloscope) | | Ignition IGBT outputs | A13 (IGT‑A), A14 (IGT‑B) for wasted spark | | Unlabeled +5 V supply | B3 – +5 V ±2% for MAP/TPS (max 50 mA) | bosch m797 pinout better

Safety tips

Are you working on a specific vehicle brand, or are you trying to a unit for a custom project? Usually requires a 1k Ohm resistor to ground

Use a stabilized 12V–13.8V power supply. Never use a cheap "wall wart" charger. Never use a cheap "wall wart" charger