Got me. With my wiring issues, it's hard to say what is causing what. Check your wiring harness by the drivers side shock mount. Mine ran right over it and rubbed through the wire casing of three wires. One was the fuel pump which I found after I replaced the pump. The others I'm not sure what they do. I do think my power lock, door switch issue is the VSM because I took the #19 fuse out as nissandoc suggested and now my locks work, but the door ajar light is on even though I am pretty sure the switches are okay. After reading every thread I could find, it seems 2002's are the only ones that have this problem. I think this was the first year for the VSM and it was a dud, and they were changed for '03.