Looks like I fixed my error about the passenger resistance. As the new resistance I fitted wasn’t working better than the old one, despite its lower value and another ECU was showing the same error, it must be the wiring. I already checked the continuity but it was fine. I was going to try another wiring, but someone advices me to put the resistance directly on the ECU, easier, faster and no problem because of the wires. So I opened the red plug and fitted the resistance between cables 2 and 5 and reassembled the plug as it should be. I removed the resistance from its original place, behind the glovebox.
Ignition ON, and light went off as it should, no need to reset the ECU.
Last edited by Yann; 12/02/2019 20:58.