Bosch M7 Ecu Pinout [Full HD]

This document provides a comprehensive pinout, connector descriptions, signal functions, typical wiring colors, and testing notes for the Bosch Motronic M7 engine control unit (ECU). The M7 family was widely used on 1990s–2000s European petrol engines. Use this as a reference for diagnostics, wiring repairs, and retrofit projects. Confirm connector keying and wiring colors against the specific vehicle service manual before applying power.

| 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 | Bosch M7 Ecu Pinout

Example additional pins (Row C):

For a specific vehicle, obtain the OEM wiring diagram – this document serves only as a generic guide. Confirm connector keying and wiring colors against the

Typically requires direct connection or "lay-by" pins located in the lower part of the ECU housing. This document provides a comprehensive pinout