Too hot to be outside. So I use the time in for to study the wiring diagram and how the fuel-relais must work.
When I understand right:
At first, the fuel relais is a „switch on relais“ („Arbeitsrelais“). So all pins must show the 12.+V
So at the relais the low voltage at YU122 is the problem. YU122 turns to YU85 in the chassis/engine connector and than to PIN106 at the ECU. So far, so good. But than I struggle.
The connector pin 106 to the ECU shows 12.6V. With an open connection to the ECU, so why there are only 0.15V at YU122 at the relais? Is this the main point/ problem?
Tomorrow I can collect my new cam-sensor and a new ignition coil, but in cause of a „familiy thing“ I can have the next look at the MOG on friday. After I fitted the new parts I‘ll try to flood the cylinders. For my thinking fuel must run, but no spark?
Also I had a look at the immobilizer wiring, there is SR292 running to the fuel-relais, but not shure how it‘s named at the relais, but all wires without YU122 are right, so no problem with the immobilizer?
With big clouds from heat and thinking over his head
Greets and Regards René
