Hello i started to troubleshoot my vr swap buy testing main grounds on the ecu connector.
Theyre all good except for 33. This is for the engine senors, tps, knock 1&2, ect, and iat.
I have continuity from all of the sensors to pin 33. But none are grounding.
Where is it supposed to be grounded at? On the head with the other grounds? I don't see any more wires to ground on the engine harness.
Fyi i have an obd1 harness with distributor. Passat i believe. Thanks