Bosch M7 Ecu Pinout < HIGH-QUALITY ✧ >

Decoding the Bosch M7 ECU Pinout: Power, Ground, and Signals

A10 — CKP VR- (crank sensor negative)
A11 — CKP VR+ (crank sensor positive)
A12 — CMP Hall (cam sensor)
A13 — Ignition coil driver (IGN OUT)

Pin-level identification steps (how to determine exact pinout for your unit)

Drive-by-wire (ME7.5): Uses separate pedal sensor pins (A25 = pedal position 1, C8 = pedal position 2).
Boost control (Turbo): Pin B7 (wastegate solenoid) – not present on naturally aspirated.
Second oxygen sensor (post-cat): Pin B17 (signal), B22 (heater).

| Pin | Function | Signal Type | Voltage / Notes | |-----|-----------------------------|----------------|-----------------------| | A1 | Main Relay Supply (Battery+) | Power Input | 12V constant | | A2 | Main Relay Supply (Battery+) | Power Input | 12V constant | | A3 | Injector Cyl 1 | Output | Ground-switched (~1-4ms) | | A4 | Injector Cyl 2 | Output | Ground-switched | | A5 | Injector Cyl 3 | Output | Ground-switched | | A6 | Injector Cyl 4 | Output | Ground-switched | | A7 | Ignition Coil 1 (Power stage) | Output | 0-5V logic to igniter | | A8 | Ignition Coil 2 | Output | 0-5V logic | | A9 | Ignition Coil 3 (if 6 cyl) | Output | N/A for 4-cyl | | A10 | Ignition Coil 4 | Output | N/A for 4-cyl | | A11 | Fuel Pump Relay Control | Output | Ground-switched to relay | | A12 | Main Relay Control | Output | Ground-switched | | A13 | ECU Ground (Power) | Ground | To engine block | | A14 | ECU Ground (Power) | Ground | To engine block | | A15 | Sensor Ground (Analog) | Ground | Dedicated ground | | A16 | Sensor Ground (Digital) | Ground | Dedicated ground | | A17-A22 | Spare / Not used | - | - | | A23 | Knock Sensor Shield | Ground | Shield only | | A24 | Knock Sensor Signal | Input | AC 0-5V | | A25-A32 | Injector returns / unused | - | - |

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

Red — battery +12V permanent
Red/white or red/black — switched +12V
Black — ground (chassis)
Green/black, green/red — signal grounds or sensor grounds
Yellow — injector or ignition outputs (varies)
Blue — sensor signals (TPS, MAP)
Grey — MAF signal (Audi/VW often)
Do not rely on color alone — verify with meter.