B: Vehicle Doesn't Shift Between 4WD Hi and 4WD Low Modes

Test B1 - B2:

Test B2 - B3:

Test B4:

Test B5 - B6:

Test B7 - B9:

Test B9 - B11:

Test B11 - B12:

Test B12 - B13:

Test B14 - B15:

Test B16 - B17:

Test B18 - B19:

Test B20 - B21: