Porsche ECU DME Motronic 7.8 any experts here?
Discussion
Does anyone have the wiring diagram to the actual DME (Motronic 7.8 ) unit. I have searched and searched to no avail.
Pinouts I have, but I am looking to identify the various components relating to the o2 circuits.
I stupidly cut the wires to one of the pre cat o2 sensors with the engine running and have blown something in the DME because that (replacement known working) sensor is now inactive.
I have pictures of the ECU (both sides) and all the components and traces look good to the eye. if anyone knows what the components look like or identify the likely culprit I can post some pics.
Many thanks
Berni
Pinouts I have, but I am looking to identify the various components relating to the o2 circuits.
I stupidly cut the wires to one of the pre cat o2 sensors with the engine running and have blown something in the DME because that (replacement known working) sensor is now inactive.
I have pictures of the ECU (both sides) and all the components and traces look good to the eye. if anyone knows what the components look like or identify the likely culprit I can post some pics.
Many thanks
Berni
You'll not find the complete internal diagram for the CU; even on our factory backed information. I have seen wiring melt to the exhaust shorting all the lines without damaging the control unit
Its unlikely the CU circuit has been damaged - but it can adapt to a limit and has been known to stick or be difficult to readapt. Best option is to put the Tester on it and attempt to reset the adaptions or initiate a data update and go from there.
Its unlikely the CU circuit has been damaged - but it can adapt to a limit and has been known to stick or be difficult to readapt. Best option is to put the Tester on it and attempt to reset the adaptions or initiate a data update and go from there.
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