| | Pin: | Signal Type / Description | |:---|:---:|:---| | A | A3 | Power Supply (PWR / Batt+) | | C | C? | Power Supply (PWR / Batt+) | | ? | ? | Main Ground (GND) | | ? | ? | Main Ground (GND) | | ? | F4 | Switched Power (IGN / ACC) |
Find the ST10F275 processor chip. Look for a specific boot pad or pin nearby designated by your tuning tool's documentation (usually a specific resistor footprint near the edge of the processor).
Before attempting to match pinouts, verify you have the correct unit. The ME7.4.5 has distinct physical characteristics:
Touch the other end of the resistor to the boot pad/pin.
To put the ECU into for advanced flashing or recovery, hardware modifications are required within the unit:
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The most standard bench configuration pin assignments are detailed below: Signal Type Function / Description Wire Connection Reference Constant battery feed (Battery +)
The ECU is powered by two main circuits: permanent battery power (PWR) and switched power (IGN), which is activated by the ignition key. These are distributed across several pins:
Engine Control Unit (ECU) is a critical component in many PSA (Peugeot/Citroën) vehicles, specifically those with the
When performing bench programming (reading/writing flash or eeprom), you will need to connect your tool (e.g., KESSV2, KTAG, Piasini) to specific pins.
