Maybe this is a differential problem with my Hilux?

[pbansemer]

Good afternoon everyone.

   I have a Hilux 3.0 D4D here in Brazil and a fact called my attention last week. When I select the H4 mode (4WD) and try to make a full circle around, no matter for with side left or right, the inside tire of rear axle slip on dirt road. This is a normal behaviour of this vehicle or there is some problem here with the rear differential? It looks like when I select the H4 mode the differential blocks, loosing its function, and make the rear axle useless from the point of view of compensate wheels speed on turn. On H2 mode, the wheels of rear axle works fine, without slip on the same test condition. Please, could anyone help me understand this situation? Thanks for attention.

 

PS.: my vehicle have LSD on rear axle and the ADD function equipped.