Pinout | Bosch Me711

Bosch ME711 Pinout: A Comprehensive Guide

The ME711 is widely used in various applications, such as:

Boot Mode

An interesting technical feature of the Bosch ME7.1.1 pinout is its support for , which allows for a full low-level recovery or "cloning" of the ECU by grounding a specific internal pin during power-up. Key Highlight: The "Boot Pin" Trick bosch me711 pinout

1. Pin 78/79 (Crank Sensor): 200-1000 ohms between pins. Should produce ~0.5-1V AC while cranking.
2. Pin 55 (Fuel Pump Relay): Should click to ground (0V) for 2 seconds at key-on, then again during cranking.
3. Pin 31-34 (Injectors): Use a NOID light. No flash? Check +12V supply to injectors (separate fuse) and ECU ground switching.
4. Pin 35-38 (Ignition Outputs): ME711 uses logic-level outputs. If you have +12V at coils but no spark, the ECU may not be seeing crank signal.

Ground (GND):

To power up the ECU and establish a diagnostic connection, use these core pins: Pins 1 and 2 . Permanent Power (+12V - Terminal 30): Pin 3 . Bosch ME711 Pinout: A Comprehensive Guide The ME711

121-pin male connector

The ME711 uses a on the ECU side. The female harness connector is typically secured with a 10mm central bolt. Pin 78/79 (Crank Sensor): 200-1000 ohms between pins

1. Power and Grounds (The Foundation)

Here's a brief explanation of some key signals:

Boot Pin:

Entry into boot mode typically requires grounding a specific point on the ECU motherboard—often a "lay-by" pin or a specific pad on the ST10 processor—while powering the unit on.