Car wiring diagrams: Bmw E90 Short Circuit Reset, wiring diagram, wire wiring harness, schematic circuit diagram, wiring diagran, wireing diagram, wirring diagram, wiring daigram, wiring diagrams. Video embedded Hi This car came to me wit not working reversing lights. The car had a short circuit on the system, that was resolved, but still no .The Valvetronic motor is used on BMW E models with a normally aspirated engine. It is responsible for actuating an eccentric shaft that adjusts intake valve lift..Old, worn out oxygen sensors can cause poor mileage, low power and a variety of fuel injection problems. Learn to replace them today with our article.