Bosch M7: Ecu Pinout

The Bosch M7 ECU pinout follows a logical but manufacturer‑specific arrangement. While many signals are consistent across M7.x variants (power, grounds, K‑Line, crank sensor), key differences exist for CAN, electronic throttle, and wideband O2. Engineers and tuners must verify pinouts against the exact hardware number (e.g., 0 261 204 172). The provided 88‑pin reference serves as a reliable starting point for diagnostics and conversion.

The Bosch Motronic M7 is a unified engine management system. Unlike older systems that separated fuel injection (Jetronic) and ignition (Motronic), the M7 integrates: Bosch M7 Ecu Pinout

| Pin | Function | Signal Type | Voltage / Notes | |-----|-----------------------------|----------------|-----------------------| | C1 | Idle Air Control Valve (IACV) | PWM Output | Duty cycle 20-80% | | C2 | EVAP Purge Solenoid | PWM Output | Ground-switched | | C3 | Variable Valve Timing (VVT) | PWM Output | If equipped | | C4 | Cooling Fan Relay (Low speed) | Output | Ground-switched | | C5 | Cooling Fan Relay (High speed) | Output | Ground-switched | | C6 | A/C Compressor Relay | Output | Ground-switched | | C7 | MIL (Check Engine Light) | Output | Ground-switched to dash | | C8 | Diagnostic K-Line (ISO 9141) | Bidirectional | 0-12V, active low | | C9 | CAN Low (if equipped) | Differential | 1.5-2.5V | | C10 | CAN High (if equipped) | Differential | 2.5-3.5V | | C11 | Fuel Tank Pressure Sensor | Analog Input | For EVAP monitoring | | C12 | EGR Vacuum Modulator | PWM Output | Diesel variants | | C13-C32 | Spare or transmission inputs | - | For automatic versions | The Bosch M7 ECU pinout follows a logical