Double-check Pin 43 (K-Line). Ensure your OBD-II tool configuration matches the correct COM port and baud rate. Lowering the baud rate to 10400 often fixes stubborn connections.
For detailed diagrams and model-specific variations (e.g., Audi S4, Passat, or Porsche), you can find comprehensive PDF guides on or specialized automotive forums. Important Safety Note:
A compatible OBD2 interface cable (e.g., FTDI-based KKL cable for NefMoto, or proprietary hardware interfaces). Wiring Connection Map (ECU to OBD2 Port) bosch me711 pinout
While the basic power and ground pins remain relatively consistent, minor variations exist based on the vehicle manufacturer:
These pins handle the heavy lifting, driving the physical components of the engine. Double-check Pin 43 (K-Line)
Check pins 11-14/25-28 and coil drive pins, as the driver circuits in the ECU can fail. 6. Resources for Detailed Diagrams
to ground) to enable the bootstrap process for reading/writing. For detailed diagrams and model-specific variations (e
Are you planning to use a specific like Kess, Galletto, or MPPS for this connection? Bosch ME7.1.1 ECU Pinout Guide | PDF - Scribd
| Pin | Function | Protocol | |------|-----------------------------|----------------------| | | K-Line (Diagnostic) | ISO 9141-2 (7 baud init) | | T6 | CAN-High | 500 kbps drive train CAN | | T5 | CAN-Low | 500 kbps | | T7 | Clutch Pedal Switch | Digital input (manual trans) | | T8 | Brake Pedal Switch (NC) | To brake light circuit |
| Pin | Actuator | Signal | |------|------------------------|----------------| | 4 | Injector Cyl 4 | Switched Ground | | 6 | Injector Cyl 3 | Switched Ground | | 17 | Injector Cyl 1 | Switched Ground | | 18 | Injector Cyl 2 | Switched Ground | | 22 | Fuel Pump Relay | Switched Ground | | 26 | Ignition Coil 1 (Output) | Logic/TTL | | 27 | Ignition Coil 2 (Output) | Logic/TTL | | 31 | N75 (Boost Control) | PWM (Ground side) | | 36 | Idle Air Control (N71) | PWM | | 53 | Ignition Coil 3 (Output) | Logic/TTL | | 56 | Ignition Coil 4 (Output) | Logic/TTL | | 64 | EVAP Purge Valve | Switched Ground | | 65 | VVT Solenoid (if equipped) | PWM |
When looking at the (female connector) with the locking lever on top: