Battery has a full charge and connections all good? Did you check voltage and ground,
anywhere? You can use a test light. Note the starter diagram. Can you unplug starter relay?
Sometimes if diagram doesn't show terminal numbers at the relay, it could mean the relay is
soldered into the fuse box and you can't pull it out? The relay has two sides, the switch
side, in the diagram, the right side. You can see that 40 fuse, hot all the time. The control
side of diagram, left side in diagram, need voltage and ground in order to energize the
relay, you can see the crank fuse, goes hot with key in the crank position and the neutral
switch is in that circuit. When trying to crank, did you try in in park and neutral? at the
starter motor, two voltage circuits, one comes from battery, hot all the time. The other
circuit, s terminal at starter motor goes hot when relay is energized. any testing at starter
motor, make sure transmission in park or neutral and parking brake is set, Vehicle can't
move. good luck with testing.