Bosch M797 Pinout - Better

For chiptuning and flashing (e.g., using or K-Tag ), you must often enter "Boot Mode" by connecting specific internal lay-by pins:

| Category | Typical Pins | Function | |----------|--------------|-----------| | | 37 (B+), 38 (B+), 57 (main relay) | 12V supply | | Grounds | 19, 33, 52, 53 | Sensor & power ground (do NOT combine externally) | | Sensors | 48 (crank position), 49 (cam), 44 (TPS), 46 (CTS) | 5V reference & return | | Actuators | 1, 2 (injectors), 15 (ISC valve), 56 (fuel pump relay) | Low-side drivers | | Ignition | 31 (IC output), 32 (IC ground) | Ignition module control | | Diagnostics | 54 (K-line), 55 (L-line) | ISO 9141 | bosch m797 pinout better

Ensure you distinguish between the standard M7.9.7 and the ME7.9.7 (used in Chery), as some pin assignments for throttle control may differ. For chiptuning and flashing (e