I was going to clean my maf today so thought I would check voltages for you. procedure remove neg cable, disconnect maf connector, attach neg cable. Pins left to right pin 2 =9v. had a request for voltage on pin 3. Went out and removed maf connector pin 3= 11.98v pin 2= 5v. pin 2 dropped...
I have a 98 it will not start with maf disconnected. It maybe the diagram is wrong . I have 9v on the 4th pin from the right 0 on the 4th pin from the left. I hope this helps. Rich