Me7.4.5 Pinout

Many users seek the pinout for "Immo Off" solutions, which often involve using an emulator (like the Julie emulator ) to bypass transponder signal issues.

⚠️ A missing ground (especially B23) will cause erratic sensor readings. me7.4.5 pinout

The is the backbone of any successful 1.8T tuning or diagnostic project. While the ECU is largely reliable, wiring mistakes are the #1 cause of “phantom” performance issues. Keep this guide bookmarked, always use a multimeter to confirm continuity, and never assume a pin is unused without consulting a factory wiring diagram (which can vary slightly for automatic transmission or quattro systems). Many users seek the pinout for "Immo Off"

The Bosch ME7.4.5 is a widely used Engine Control Unit (ECU) in PSA Group (Peugeot/Citroën) vehicles, specifically those equipped with the 1.6L 16V gasoline engines. Understanding its pinout is essential for automotive technicians and enthusiasts involved in ECU remapping, cloning, or troubleshooting. Overview of the Bosch ME7.4.5 While the ECU is largely reliable, wiring mistakes

| Function | Pin (T121) | Notes | |----------|------------|-------| | K-line (diagnostics) | 26 | ISO 9141-2 | | CAN low | 24 | Usually for ABS/TCU | | CAN high | 25 | | | Ignition switch +12V | 1 (via main relay) | Terminal 15 | | Permanent +12V | Also on separate high-current pin | Terminal 30 | | Ground | 2, 32, others | |

✅ Battery disconnected ✅ ME7.4.5 pinout printed and verified with vehicle year ✅ All grounds (pins 1, 3, 70, 71) secured to clean metal ✅ +12V permanent (pins 4, 72, 73) and switched (5, 69) present ✅ CAN bus (6,7) resistance approximately 60 ohms between pins ✅ Fuel pump relay control (19) connected correctly ✅ No bent pins inside the T121 housing