Bosch Me20 Pinout Verified [ Chrome ]

Which are you trying to connect to the unit? Share public link

If you are bench-testing the ECU, you will need to connect the basic requirements: power, ground, and a communication line (CAN H/L or K-line). Always use a current-limited power supply to protect the ECU from accidental shorts.

This guide provides a verified pinout mapping for the Bosch ME7.5.20/ME7.5.30 series, commonly used with Bosch universal wiring harnesses POL4 and POL5. 1. Overview of Bosch ME7.5.20 ECU Connector Structure bosch me20 pinout verified

| ECU Code | Connector Type | Common Vehicles | Fuel System | | :--- | :--- | :--- | :--- | | | 2x 32-pin (64 total) | Peugeot 206 1.4i, Citroën Saxo 1.6i | Multipoint sequential | | ME20.4 | 3x 32-pin (96 total, 88 used) | Peugeot 307 1.6 16V (NFU), Mini Cooper R50 | Multipoint / CNG | | ME20.6 | 3x 32-pin (88 used) | Renault Clio II 1.6 16V, Fiat Stilo 1.6 | Electronic throttle (E-gas) |

The Bosch ME20 engine control unit (ECU) is a foundational electronic management system used across various European vehicles from the late 1990s and early 2000s. Whether you are performing an engine swap, diagnostics, or bench flashing, having a verified pinout diagram is critical to avoid destroying sensitive electronic components. Which are you trying to connect to the unit

Both ground pins on Plug 1 must be linked to a single, solid ground point.

Understanding these core divisions allows you to isolate circuits quickly during diagnostic testing. Verified Bosch ME20 Pinout Configuration This guide provides a verified pinout mapping for

| Pin Number | Signal Name | Description | | --- | --- | --- | | 30 | Fuel Pump | Fuel pump control | | 31 | Fan Control | Cooling fan control | | 32 | MIL | Malfunction indicator lamp (check engine light) |

For diagnostic and bench testing, the following core pin assignments are widely recognized: Main Power (+12V)