Starter Repair Renault Traffic

The method of scientific poking checked all the wire relay circuits and fuses, it turned out that the starter relay, or rather the contacts are in the ignition, the relay that the video is controlled by a robotic gearbox. In which the oil pressure was lost, the squeeze rod did not give a command to the starter relay. This turned out to be the absence of a negative contact on the relay itself, if you take the minus from the body and feed the relay to the car, it starts up but the gearbox does not respond and does not switch.