| Pin | Function (English) | Notes | | :--- | :--- | :--- | | | Cooling Fan Diagnostics Information | Monitors fan status | | A2 | Free / Not Used | | | A3 | CAN I/S Network High | High-speed CAN bus line (often 500 kbps) | | A4 | CAN I/S Network Low | Low-speed CAN bus line (often 500 kbps) | | B1 | Cooling Fan Unit Control 1 | Output for fan relay | | B2 | "Hands-Free" Starting Control | Used for keyless start systems | | B3 | Alternator Charging Information | Monitors alternator status | | B4 | Diagnostics K-Line | Used for onboard diagnostics (OBD) and some programming tools | | C1 | Cooling Fan Unit Control 2 | Secondary fan control output | | C2 | Free / Not Used | | | C3 | Free / Not Used | | | C4 | Excessive "Stop" Signal | Brake pedal redundancy signal | | D1 | Clutch Contact Sensor | Manual transmission models only | | D2 | Ground for Refrigerant Pressure Sensor | | | D3 | Power Supply for Refrigerant Pressure Sensor | Often +5V or +12V reference | | D4 | Ground for Refrigerant Pressure Sensor | | | E1 | Accelerator Pedal Position Sensor №2 | Redundant signal for safety | | E2 | Accelerator Pedal Position Sensor №1 | Primary signal for throttle request | | E3 | Power Supply for Accelerator Pedal Sensor | Often +5V reference | | E4 | Ground for Accelerator Pedal Position Sensor 1 | | | F1 | Accelerator Pedal "Sticking" Signal | Plausibility check | | F2 | Power Relay Control | Controls main power relay | | F3 | Main Relay Control | Controls the ECU's main supply relay | | F4 | Remote Wake-up for Computers | Activates other modules from sleep mode | | G1 | Ground | Chassis ground | | G2 | Free / Not Used | | | G3 | Ground for Accelerator Pedal Position Sensor 2 | | | G4 | Ground | Chassis ground | | H1 | Ground | Chassis ground | | H2 | +12V Power Supply for Injection Computer | Main battery power (often switched via relay) | | H3 | Free / Not Used | | | H4 | Ground | Chassis ground |
The ME7.4.5 pinout follows a logical Bosch architecture but requires strict attention to ground integrity and CAN bus communication for proper operation. When diagnosing faults, technicians should prioritize checking power supply pins (A3, A6) and ground pins (A1, A2, A4) before proceeding to sensor checks.
When working with boot mode for authorized software updates, never apply voltage to the boot pin directly without a resistor. This protection prevents current overdraw that can permanently damage the microprocessor.
ME7.4.5 Pinout: A Comprehensive Guide
The is a widely utilized engine management system engineered by Bosch for French automotive manufacturers. It is primarily found controlling 1.6L 16V naturally aspirated petrol engines (such as the TU5JP4) across various Peugeot and Citroën (PSA group) platforms , including vehicles like the Peugeot 206, 207, 307 and Citroën C3, C4, and Berlingo.
(immobilizer removal) or performance remapping. Accessing the full internal memory (Micro + EEPROM) often requires putting the ECU into Bosch ME7.4.5 ECU Pinout Guide | PDF | Computers - Scribd
Contains many manual uploads of "Bosch ME7.4.5 ECU Pinout Guide" PDFs. me7.4.5 pinout
Depending on your specific project goal, the pinout layout is used in distinct ways: 1. Bench / Full System Mode (No Opening)
The ME7.4.5 pinout is essential for various applications, including:
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. | Pin | Function (English) | Notes |
Below are typical signal groups and examples of the kinds of pins you’ll find. Exact pin positions vary by ECU shell and vehicle.
Primary line for full-system reads, writes, and emulator wiring High-speed twisted pair communication line Paired with CAN-H for differential signaling control
The immobilizer system in PSA vehicles is integrated with the ECU and the BSI. For IMMO-related tasks, such as performing an "IMMO off" procedure to bypass the immobilizer (often for engine swaps or when keys are lost), you will likely need to access the EEPROM chip. On the ME7.4.5, the relevant chip is an ST95320 (often labeled 95320) located inside the ECU on the back of the board. The process typically involves removing the ECU, desoldering this chip, and editing its binary file to disable the immobilizer before rewriting it. Alternatively, emulators can be used to override the IMMO system. The PIN code for the vehicle can also be extracted from the EEPROM dump. (immobilizer removal) or performance remapping