Me7.4.5: Pinout
To power up the ECU and establish a diagnostic link, connect your interface to the following specific pins: Power and Ground Connections Black Connector -> Pin H2 Switched +12V (Ignition Power): Black Connector -> Pin A4
Finding a reliable pinout for the is essential for anyone looking to perform bench flashing, chip tuning, or diagnostic repairs on Peugeot and Citroën vehicles. This ECU is commonly paired with the 1.6L 16V (NFU/TU5JP4) engines found in the 206, 207, 307, and C4.
Useful for "Full System" boot mode connection, reading Micro + EEPROM. me7.4.5 pinout
| Pin No. | Function | Description / Signal | | :--- | :--- | :--- | | | Output Stage Ground | Ground for ignition coils (Critical) | | A02 | Signal Ground | Sensor ground return (MAP, T-MAP, etc.) | | A03 | Battery Voltage (+12V) | Switched power supply (via Main Relay) | | A04 | Ignition Coil 1 | Cylinder 1 trigger signal | | A05 | Ignition Coil 2 | Cylinder 2 trigger signal | | A06 | Ignition Coil 3 | Cylinder 3 trigger signal | | A07 | Ignition Coil 4 | Cylinder 4 trigger signal | | A09 | CAN High | CAN-Bus Communication (High Line) | | A10 | CAN Low | CAN-Bus Communication (Low Line) | | A16 | T-MAP Sensor +5V | 5 Volt supply for Manifold Pressure Sensor | | A17 | T-MAP Signal | Manifold Absolute Pressure Signal | | A20 | Oxygen Sensor Signal | Pre-cat O2 Sensor Signal | | A21 | Oxygen Sensor Ground | Pre-cat O2 Ground | | A27 | Coolant Temp Signal | Engine Coolant Temperature (ECT) Sensor | | A28 | Intake Air Temp Signal | Intake Air Temperature (IAT) Sensor | | A29 | Throttle Position 1 | Potentiometer 1 (Electronic Throttle) | | A30 | Throttle Position 2 | Potentiometer 2 (Electronic Throttle) | | A31 | Throttle Motor + | DC Motor control (positive) | | A32 | Throttle Motor - | DC Motor control (negative) | | A35 | Vehicle Speed | Speed signal from ABS/Transmission | | A39 | K-Line | Diagnostic Line (OBDII Port) | | A42 | Power Steering Pressure | Power steering pressure switch input | | A62 | Accelerator Pedal 1 | Accelerator Pedal Position (APP) Sensor 1 | | A63 | Accelerator Pedal 2 | Accelerator Pedal Position (APP) Sensor 2 |
This comprehensive guide covers the technical specifications, detailed bench pinout configurations, boot mode procedures, and practical step-by-step instructions for working with this ECU. 🛠️ Hardware Overview & Vehicle Applications To power up the ECU and establish a
For bench work—such as reading, writing, or diagnostics—you typically connect to (the 32-pin connector). +12V Power Supply: Pin H2 Ignition (+12V): Pin F4 Ground: Pin H4 K-Line (Data): Pin B4 CAN-Bus: CAN High: Pin A3 CAN Low: Pin A4 Programming & Boot Mode
Disclaimer: This report is for educational and technical reference purposes only. Vehicle wiring can vary by production year and region. Always consult the specific vehicle wiring diagram for the exact model year before performing any work. | Pin No
to put the ECU into boot mode, two 6k8 ohm resistors need to be added and one resistor needs to be removed from the ECU. Bosch ME7.4.5 ECU Pinout Guide | PDF | Computers - Scribd
Before attempting to match pinouts, verify you have the correct unit. The ME7.4.5 has distinct physical characteristics:
To power up the ECU on your workbench using tools like KESSv2, KTAG, Galletto, MPPS, or Flex, use the following pin assignments. Always use a stable 12V to 13.5V laboratory power supply capable of delivering at least 2 Amperes. Power and Ground Connections
Disclaimer: Automotive ECU testing and diagnostics should be performed by qualified professionals. Always back up the original data before attempting any hardware-level diagnostics or software updates.
