Bosch Me20 Pinout Verified May 2026

| Pin Number | Signal Name | Description | | --- | --- | --- | | 40 | A/C Relay | Air conditioning relay control |

The Bosch ME20 pinout is a critical piece of information for anyone working with this ECU. With this verified pinout, tuners, enthusiasts, and technicians can confidently modify, troubleshoot, and repair the engine and electrical system. Remember to consult vehicle-specific documentation and wiring diagrams to ensure accuracy and avoid potential damage.

| 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) | bosch me20 pinout verified

The Bosch ME20 is a popular engine control unit (ECU) used in various vehicles, known for its reliability and performance. For tuners, enthusiasts, and DIYers, understanding the ME20 pinout is crucial for modifying, tuning, or troubleshooting the engine. In this article, we will provide a verified Bosch ME20 pinout, along with essential information and insights to help you work with this ECU.

| Pin Number | Signal Name | Description | | --- | --- | --- | | 15 | TPS | Throttle position sensor | | 16 | MAP | Manifold absolute pressure sensor | | 17 | ECT | Engine coolant temperature sensor | | 18 | IAT | Intake air temperature sensor | | 19 | O2 | Oxygen sensor (lambda) | | Pin Number | Signal Name | Description

Here is the verified pinout for the 172-pin connector:

The Bosch ME20 ECU is a sophisticated engine management system designed to control and monitor engine performance, emissions, and diagnostics. It is widely used in various vehicles, including passenger cars, trucks, and industrial equipment. The ME20 ECU is known for its advanced features, such as fuel injection, ignition timing, and torque management. including passenger cars

| Pin Number | Signal Name | Description | | --- | --- | --- | | 120 | CK_OUT | Clock output | | 121 | RESET | Reset signal |