Depending on the year of manufacture, the mounting locations may vary.
Front bumper
-open the hood.
-under the hood, release the five latches (you need to put your hand behind the radiator grille and press the latches) and remove the radiator grille.
-under the radiator grille, take out the five pistons (inserted from bottom to top).
-take out the two pistons in the bumper grille (inserted from bottom to top).
-from the bottom we take out two pistons and Unscrew the six screws.
-turn the wheels to the side.
-in the wheel arches we release the fender liners (front part).
-behind the fender liners, unscrew one screw on each side (twisted from bottom to top) that secure the corners to the wings.
-with an assistant, carefully pull the bumper forward (watch the wires).
-disconnect the connectors of the electrical equipment (if any).
Rear bumper
-tear off the trunk lid.
-in the trunk opening we take out the six pistons that secure the upper part of the rear bumper.
-from the bottom side, unscrew the four screws that secure the lower part.
-in the wheel arches, unscrew three screws on each side that secure the sides.
-we release the bumper from the clamps in the wings in the wings.
-with an assistant, pull the bumper back (watch the wires).
-disconnect the connectors of the electrical equipment (if any).
How to remove front and rear bumper, Nissan Terrano 2 R20 (1993-2006)