Planetary Carrier

WARNING: This page is about a different car, the 2003 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Measure end play of each pinion gear, and make sure the measurement is within specification shown below. If out of specification, replace planetary carrier with new one.
Pinion gear end play: 0.1 - 0.7 mm (0.004 - 0.028 in)
Check working face of each gear, bearing and others for damage, burrs, partial wear, dents and other abnormality. If any is found, replace planetary carrier with new one.

Fig 1: Measuring Pinion Gear End Play
Courtesy of NISSAN MOTOR CO., U.S.A.