The Bosch ME7.4.5 ECU connects to the vehicle's wiring harness via two main connectors, typically differing in color and pin count for easy identification. These are robust connectors designed to ensure a secure and reliable connection in the harsh engine bay environment.
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).
The ME7.4.5 pinout refers to the specific configuration of pins on a Bosch ME7.4.5 engine control unit (ECU). This ECU is widely used in various vehicles, and understanding its pinout is essential for tuning, troubleshooting, and modifying engine performance.
middle connector (often referred to as Connector B or the 48-way connector) small connector (Plug C) are typically used +12V Power Supply (K30): Ignition (+12V): me7.4.5 pinout
Power & Ground
| Connector | Color | Pin Count | Primary Functions | | :--- | :--- | :--- | :--- | | | Black | 32 | Power distribution, ground, CAN network, K-Line diagnostics, and various control outputs | | Connector "b" | Brown | 48 | Sensor inputs (throttle, temperature, lambda, etc.), actuator outputs, and power supply to sensors |
Many users seek the pinout for "Immo Off" solutions, which often involve using an emulator (like the Julie emulator ) to bypass transponder signal issues. The Bosch ME7
The ME7.4.5 uses a "Drive-by-Wire" system.
The provides the essential electrical connection blueprint required for diagnostic mapping, bench flashing, and immobilizer manipulation on French vehicles. This engine control unit is predominantly found in PSA Group vehicles (Peugeot and Citroën) equipped with 1.6L 16V petrol engines (such as the NFU / TU5JP4 powerplants). Accurate knowledge of this specific pinout allows chiptuners and diagnostic technicians to establish stable communications via specialized tuning hardware without damaging the internal processor architecture. Hardware Architecture & Connector Overview
For bench-mode programming (using tools like KESS, K-TAG, or KT200), the following pins are standard for established communication: Pin H2 (Plug C) Ignition (+12V): Pin F4 (Plug C) Ground (GND): Pin H4 (Plug C) K-Line (Communication): Pin B4 (Plug C) It controls 16-valve petrol engines, specifically the 1
This guide provides a comprehensive breakdown of the connector pinouts, power requirements, and communication lines needed for bench work. ECU Overview
| Pin No. | Function | Description | | :--- | :--- | :--- | | | Throttle Position | Throttle Potentiometer Signal 1 | | A11 | Throttle Position | Throttle Potentiometer Signal 2 | | A12 | Supply (+5V) | Sensor Reference Voltage (MAP, TPS) | | A14 | Coolant Temp | Engine Coolant Temperature Sensor | | A15 | Intake Air Temp | Intake Air Temperature Sensor | | A16 | MAP Sensor | Manifold Absolute Pressure Signal | | A20 | Brake Switch | Brake Pedal Input (Cruise/Throttle safety) | | A21 | Clutch Switch | Clutch Pedal Input (Manual transmissions) | | B12 | Vehicle Speed | Speedometer Signal Input | | B14 | Lambda Sensor | Oxygen Sensor Signal (Pre-cat) | | B15 | Lambda Heater | Oxygen Sensor Heater Ground/Drive | | B24 | Camshaft Sensor | Cylinder Identification (Hall Effect) | | B25 | Crankshaft Sensor | Engine Speed (RPM) Signal (Inductive) | | B26 | AC Request | Air Conditioning Demand Signal |