Me7.4.5 - Pinout !exclusive!

While functions can vary by specific engine code, general wiring for the ME7.4.5 series often follows this pattern:

The ME7.4.5 features three main harness connectors, typically labeled (Black), CL (Gray), and CP (Brown), or designated by slots A, B, and C . To power up the ECU on your workbench, connect your hardware tool (such as KESSv2, KTAG, FoxFlash, or MPPS) to the following specific pins: Power and Ground Connections

Follow the instruction guide provided by your tool (e.g., Piasini, KTAG) precisely, as the resistor location is crucial to prevent damage to the microprocessor. 4. Technical Specifications and Diagnostic Interface me7.4.5 pinout

The Bosch ME7.4.5 Engine Control Unit (ECU) is a critical component found in many PSA (Peugeot and Citroën) vehicles from the mid-2000s. It controls 16-valve petrol engines, specifically the 1.4L and 1.6L variants (such as the NFU TU5JP4 engine).

This comprehensive guide provides the exact wire connections, boot pin locations, and step-by-step procedures required to safely read and write to the Bosch ME7.4.5 ECU on the bench. Technical Specifications: Inside the ME7.4.5 While functions can vary by specific engine code,

Below is the definitive pinout for the ME7.4.5. Pins are numbered 1 through 121. Pins marked “---” are unused in most manual-transmission 1.8T applications.

(Full 121-pin table available in Bosch ME7.5/7.4 factory documentation – above are most commonly used pins.) Technical Specifications: Inside the ME7

For a physical pinout diagram, search: "ME7.4.5 pinout diagram" or look for the from VAG self‑study programme SSP 236 (1.8T engine management).

The ME7.4.5 uses a single, massive connector, commonly referred to as the T121 connector. However, in practical terms, the T121 is divided into three separate physical plugs labeled A, B, and C. Each plug has a different number of pins and distinct color codings depending on the vehicle, but the pin functions remain consistent across most 1.8T 20V engines (AUG, AUM, BAM, AMK, APX codes).

| Pin # | Signal Name | Description | | --- | --- | --- | | 1 | B+ | Battery voltage | | 2 | IG | Ignition switch | | 3 | GND | Ground | | ... | ... | ... | | 10 | TPS | Throttle position sensor | | 12 | MAP | Manifold absolute pressure sensor | | ... | ... | ... |