Me745 Pinout Free [2021] Jun 2026

Follow the positive terminal of the input capacitor (typically 10µF–22µF, rated for 25V or more). That capacitor connects directly to .

The Bosch ME7.4.5 (often referred to as ME745) is a widely used Engine Control Unit (ECU) in PSA Group vehicles—Peugeot and Citroën—from the mid-2000s to the 2010s. Whether you are performing a tuning project, repairing a vehicle, or attempting to clone an ECU for a swap, having an accurate pinout diagram is essential.

For those working on the commonly found in PSA Group (Peugeot/Citroën) 1.6L 16V NFU engines, here is the essential pinout information for bench programming and boot mode. Bosch ME7.4.5 Bench Pinout (Plug C)

By using the DFB Technology documentation or the PiasiniEngineering scribd guide, you can successfully perform full system read/write operations. me745 pinout free

The ME745 microcontroller is part of STMicroelectronics' efforts to provide versatile, high-performance solutions for embedded system design. With its ARM-based core, it offers a balance of processing power and energy efficiency, making it suitable for battery-powered devices and applications requiring high computational capabilities.

: 48-pin QFN

Ensure your power supply provides a steady 12V–13.5V; voltage drops during writing can brick the ECU. Follow the positive terminal of the input capacitor

Below is the universal required to power up the ECU for basic diagnostics or reading: 1. Power Supply and Ground Layout Bosch ME7.4.5 (Citroen Peugeot) IMMO OFF

The Bosch ME7.4.5 uses a triple-connector system (32-pin Grey, 48-pin Brown, and 32-pin Black). When working with "free" pinout diagrams, the goal is typically to establish a connection for or bench reading without needing expensive proprietary harnesses. Core Bench Pinout Connections

Faulty wiring or incorrect pin assumptions can easily mimic a dead ECU. If you are tracking down issues on a Peugeot or Citroën utilizing this module, focus on these high-failure areas: Whether you are performing a tuning project, repairing

Bosch ME7.4.5 engine control unit (ECU), commonly used in Peugeot and Citroën vehicles (like the 206, 207, 307, C2, and C4), has specific pin assignments for power, grounding, and communication. This model typically features a 3-plug system (32-48-32 pins), where Plug C (Gray) is primarily used for bench connections and boot mode. Bosch ME7.4.5 Bench Pinout (Plug C)

| Pin(s) | Type | Description | | :--- | :--- | :--- | | A1 | Input/Output | Radiator Fan Diagnostic | | A3, A4 | Communication | CAN I/S Bus (High & Low) | | A5 | Output | Radiator Fan Block 1 | | A6 | Input | Hands-Free Start Control | | A7 | Input | Alternator Charging Info | | A8 | Input/Output | Diagnostic Line K | | A9 | Output | Radiator Fan Block 2 | | A12 | Input | Brake Pedal Switch | | A13 | Input | Clutch Pedal Sensor | | A14, A16 | Ground | Coolant Pressure Sensor Ground | | A15 | Output | Coolant Pressure Sensor 5V Power | | A17 | Input | Accelerator Pedal Position Sensor 2 | | A18 | Input | Accelerator Pedal Position Sensor 1 | | A19 | Output | Accelerator Pedal Sensor 5V Power | | A20 | Ground | Accelerator Pedal Sensor 1 Ground | | A21 | Input | Pedal Stuck Signal | | A22 | Output | Power Relay Control | | A23 | Output | Main System Relay Control | | A24 | Input | Wake-Up Signal | | A25, A28, A29, A32 | Ground | ECU Power Ground | | A27 | Ground | Accelerator Pedal Sensor 2 Ground | | A30 | Power | ECU Main Power (Battery+) | | A1 (B) | Input | Throttle Position Sensor 1 | | A4 (B) | Ground | Coolant Temp Sensor Ground | | B1 (B) | Input | Downstream O2 (-) Signal | | C1 (B) | Input | Downstream O2 Signal Ground | | C2 (B) | Input | Downstream O2 Signal (+) | | C4 (B) | Ground | Manifold Air Pressure Sensor Ground | | D1 (B) | Output | Downstream O2 Heater (+) | | D3 (B) | Ground | Throttle Motor Position Sensor Ground | | D4 (B) | Ground | Cylinder Ref. Sensor Ground | | E2 (B) | Input | Throttle Position Sensor 2 | | E3 (B) | Output | Throttle Sensor 5V Power | | E4 (B) | Output | Manifold Pressure Sensor 5V Power | | F1 (B) | Input | Manifold Absolute Pressure Signal | | F3 (B) | Output | Electric Throttle Motor "Close" | | F4 (B) | Output | Upstream O2 Heater (-) | | G1 (B) | Input | Cylinder Ref. Sensor Signal | | G2 (B) | Input | Upstream O2 Signal (+) | | G3 (B) | Ground | Upstream O2 Signal Ground | | G4 (B) | Ground | Power Ground | | H1 (B) | Output | Ignition Coil Signal | | H2 (B) | Output | Injector 1 (Cylinder 1) | | H3 (B) | Output | Injector 2 (Cylinder 2) | | H4 (B) | Output | Fuel Pump Relay Control | | I1 (B) | Output | Injector 4 (Cylinder 4) | | I2 (B) | Output | Injector 3 (Cylinder 3) | | I3 (B) | Output | Electric Throttle Motor "Open" | | I4 (B) | Output | Upstream O2 Heater (+) | | J1 (B) | Input | Camshaft Phase Sensor Signal | | J2 (B) | Input | Knock Sensor Signal | | J3 (B) | Ground | Knock Sensor Ground | | J4 (B) | Ground | Injectors Power Ground | | K1 (B) | Ground | Ignition Coil Power Ground | | K2 (B) | Ground | Crank Sensor Ground | | K3 (B) | Input | Crank Sensor Signal | | K4 (B) | Input | Engine Speed (RPM) Sensor Signal | | L1 (B) | Power | Injectors Power (Battery+) | | L2 (B) | Output | Idle Air Control Valve Power | | L3 (B) | Output | Main Relay Output | | L4 (B) | Ground | Sensor Ground |

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Peugeot (206, 207, 307, 308, Partner), Citroen (C2, C3, C4, Berlingo) Engine Type: 1.6L 16V / 1.4L 16V Gasoline Detailed ME7.4.5 Pinout Table (Free Download Alternative)