My 2006 Passo has been having a parasitic battery drain for a year now! Strange how I survived that long!! It normally would not start after sitting for just 5 hours. I bought a bigger battery, thinking it would solve the problem, and it did, albeit for just 3 days, and then the drain started. I decided enough was enough and decided to investigate.
I used the multimeter style, while pulling out fuses and on the 8th fuse, the EFI fuse, the drain just stopped on the multimeter. I realized that was the issue, and decided to test it out. So I let the Passo sit overnight without the EFI fuse and in the morning when I put it back in, the battery had not drained and the car started normally. A point to note, everything else is working just fine. Now, I had all along suspected the throttle part of the engine to be the culprit since I used to remove the negative terminal every evening whenever I parked the car to stop the battery drain, and every time I would reconnect the terminal in the morning, their would be a clicking sound from the throttle section of the engine. So I once opened it up, but could not do much for I am not an expert, but I took pictures of what I thought was wrong. The part I am holding in the picture, what is its name btw?
Now that I have found my culprit, how do I sort the issue out? I honestly do not trust my local electricians, and I believe I can fix it myself if I get the right guidance. I am a DIY enthusiast. Any help please?