MembersPage/GunnarReynisson/Repairs

ECU - 14951 - M52 PNP

Order id 13910

Repair - ASAP

Delivered to VEMS - 11th Dec 2017

No feedback as of yet. Customer getting frustrated with repair time.

Issue with the ECU from the first time the customer plugged it into his car. Main relay buzzing.

Please provide feedback to the status of the repair / alterations to the ECU so that the main relay stops buzzing.

Update and further issue with this ECU.

currently on my bench with customers actual engine loom there look to be no issues when its directly connected to the battery. However as described in email conversation the main relay and fuel pump relay don´t work. With his stock BMW ECU they do and the car drives normally. Any suggestions to potential reasons?


ECU sn 19860

I need help to diagnose this ECU so I can actually use it

It hasn´t left my bench, I added second serial and 5v to second serial which works.


EC10 pinout

This should match the paper received with the device (paper also shows the pin numbers). If the paper is lost, measure (and use VT to activate outputs; Any inverted output will turn off as a consequence). If not using the information received (see the paper), and not measuring, than install is unlikely to succeed.

There are 10 wires total for this small narrow board

EC10/pin1-4: What I am getting is the NFET board output are "always on" (note: BECAUSE : )

Thick RED - 12v

Thick Brown - 0V

4 Thin Wires - all 12V

4 Thick wires - all pull to ground enough to activate my test LED


I have ECU 19222

Everything seems to work except the EGT1 is saying 100degrees while at ambient with a Ktype supplied by VEMS.

I´ve tested both of the K types I bought from VEMS and some other ones, all read on my K type tester ambient temps, just VEMS doesn´t read the ktype right.

EGT cal is 71 as arrived from VEMS.

Please advise to a resolution

This was the last thing to test before being able to ship the ECU to the customer.

Gunni