Audi Repair Questions? Ask a Mechanic for Answers ASAP
no all of the timing marks are correct?
The wires connections are all secure?
Do you have a wire diagram for the fuel injection system?
You will need to see what else is on the circuit. Something is failing which brings power or ground to all 4 injectors in the circuit. This is what the faults state. I would recommend to leave the coolant pump alone or pull the fuse until the injector circuit is repaired.
Did you check the fuel injection relay?
If the circuit is good the ECM supplies ground for the fuel injectors. You need to eliminate the rest of the circuit before replacing the ecm or you will waste time and money
you could replace the less expensive relay 1st to see if this fixes it.
But that is only guessing and not diagnosis.
(DIAGRAM) page no. 34/4
Or you can take your multimeter and check the entire circuit to be totally sure.
click on slow download at the link page provided
correction J220 is the ECM not J217