ok, on this steering board there are 6 led lights labeled 1-6 from left to right.
there are several configurations of how these lights will light up

steering lever centered = 1 and 2 are lit
steering lever moved in clockwise position = 1 is lit
steering lever moved in counter clockwise position = 2 is lit
high lift traction shut-off mode = 1 and 2 blinking in alternating sequence (back and forth)
MDU turned in wrong direction = 1 and 2 alternating, 4 and 6 lit solid
MDU did not turn = 1 and 2 alternating, 3 and 6 lit solid
MDU signal out of range = 1 and 2 alternating, 4 lit solid
steering signal out of range = 1 and 2 alternating, 3 lit solid
MDU and steering signal out of range = 1 and 2 alternating, 3, 4 lit solid
checksum error = 1 and 2 alternating, 3,4,5,6 lit solid
watchdog reset = all leds alternating
no power to ecm = all led's off

so what are the led's doing on yours?