Bosch ME7.4.5 Engine Control Unit (ECU) is commonly found in PSA Group (Peugeot and Citroën) vehicles with 1.6L 16v engines. For bench programming or diagnostics, the following pinout is used for standard connections and boot mode activation. ME7.4.5 Bench Connection Pinout Connections are typically made to
ME745 ECU Pinout Guide: Connectivity and Wiring Explained If you are working on engine tuning, diagnostics, or repairs for European vehicles—specifically those from the PSA group (Peugeot/Citroën)—you’ve likely encountered the . me745 pinout free
| 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 | Bosch ME7
If you are looking for a to perform ECU cloning, immo-off (immobilizer bypass), or flashing a performance map, you will likely need to put the ECU into Boot Mode . This bypasses the standard OBD2 communication and allows direct reading and writing to the microprocessor's flash memory. Requirements for Bench Flashing: power supply (at least | Pin(s) | Type | Description | |