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Tomas Moreno

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Saúl Rodríguez
Saúl Rodríguez

Bosch Motronic Me73h4 Pinout Diagram


Bosch Motronic Me73h4 Pinout Diagram




The Bosch Motronic Me73h4 is an engine control unit (ECU) that manages the fuel injection, ignition, and other functions of some gasoline engines. It is part of the Bosch Motronic family of ECUs, which are widely used in various car models. The Me73h4 ECU has two 26-pin connectors that connect to the engine wiring harness. The pinout diagram of the Me73h4 ECU shows the function and signal of each pin, as well as the color and number of the corresponding wire in the harness.


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The following table summarizes the pinout diagram of the Me73h4 ECU, based on the information from [2nd Life Lavender] and [Alfa Romeo Forum]. The table also provides some notes and explanations for some of the pins. Note that the pinout diagram may vary depending on the specific car model and engine configuration, so it is advisable to consult the official service manual or wiring diagram of your vehicle before attempting any modifications or repairs.




Pin


Function


Signal


Wire Color


Wire Number


Notes




1


Ignition coil 1


Output


Black/White


1





2


Ignition coil 2


Output


Black/White


2





3


Fuel injector 1


Output


Brown/White


3





4


Fuel injector 2


Output


Brown/White


4








: [Bosch Motronic Me73h4 Pinout Dia [WORK] - 2nd Life Lavender] : [BOSCH Motronic ME7.3.1 pinout diagram Alfa Romeo Forum]




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