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SR71
15th December, 2022, 08:01 AM
Hello,

Can someone guide me to fix this ecu please.

Only injectors 2 and 5 inject, there is no signal on lines 1,3,4
no problem with the injectors or the wiring, it comes from the ECU. Faults code are P0201, P0203, P0204
The mosfet transistors have the same values ​​on the multimeter, I have already swapped the two L9857 ICs but it's still the same.

Herewith the diagram of the ecu EDC17CP20.

bodzio012
17th December, 2022, 10:58 PM
Check the capacitors near the transistors responsible for injectors.