Bosch Me711 Pinout Jun 2026

Ensure permanent power (Pin 3) is applied before switched ignition power (Pin 21).

The ECU usually has two main connectors. The pins are numbered on the plastic housing. Ground (GND): Pin 1 & Pin 2 Permanent Power (+12V): Pin 3 (Terminal 30) Ignition Power (+12V): Pin 62 (Terminal 15) K-Line (Communication): Boot Mode Pin (For Flashing) To put the ME7.1.1 into (required for EEPROM reading or full recovery): Locate the flash chip or the processor inside the ECU. of the flash chip through a resistor while powering on the ECU.

Open the aluminum ECU casing. Locate the flash memory chip. You need to locate Pin 24 of the flash chip, or its corresponding circuit board pad. On most ME7.1.1 circuit boards, Bosch left a distinct, easily accessible soldering pad tied directly to this pin. bosch me711 pinout

Pins 1, 2, 3 (Depending on specific VAG model variant)

Never flash an ECU while a battery charger is in "Jump Start" mode. The voltage spikes can be fatal to the Bosch hardware. Ensure permanent power (Pin 3) is applied before

Connect ECU to Power Supply Positive (+) via a toggle switch (to simulate the ignition key).

Reliable power is the foundation of ECU health. If you experience intermittent stalling or communication loss, check these specific pins for corrosion or loose fitment. Pin 21 Power for Sensors: Pin 98 (5V Ref) Analog Ground: Pin 108 Input Signals (Sensors) Ground (GND): Pin 1 & Pin 2 Permanent

To power up the ECU on a workbench for reading, writing, or diagnostics via OBD/K-Line, you only need to connect a few critical pins. This is often called a "bench harness setup." Connection Type Pin Number Description Wire Color (Standard OBD Bench) Pin 1 & Pin 2 Chassis / Battery Negative (-) Permanent Power Constant +12V Battery (30) Switched Power Ignition Switch +12V (15) Yellow / Ignition Red K-Line Communication Diagnostic Data Line CAN-High (Optional) High-Speed CAN Network White / Twisted Pair CAN-Low (Optional) Low-Speed CAN Network Blue / Twisted Pair 🧠 Boot Mode Activation (Pin 24 / Boot Pin)

For detailed diagrams and specific hardware variations (e.g., ST10 vs. 29F800), refer to these specialized guides: Bosch ME7.1.1 Pinout and Connections Guide provides color-coded wiring for universal connectors. VAG 29F800 Specific Guide