Hello
I've been dealing with a P480 trouble code. I've replaced cooling relay cooling fan motor relay cooling temperature sensor. and the cooling fan. The check engine light was staying on all the time now it comes on then a few days pass and it turns off. Today I noticed than when fan comes on the cel turned on. I looked at a wiring schematic but don't have a clue how to read it. I'm going to buy a multi meter next. Anyway if anyone could give me any ideas on what to look for and how or what to check I'd very much appreciate it. I also checked fuses and relay in fuse box there good. Thank you for any help you could give me.