Inspection After Removal

WARNING: This page is about a different car, the 2004 Nissan Titan. However, it is still accessible from the selected car via links, so may be relevant.

Visually check that there is no significant dirt or rusting on the water pump body and vane.
Make sure there is no looseness in the vane shaft, and that it turns smoothly when rotated by hand.
If there are any unusual concerns, replace the water pump assembly.

Fig 1: Checking Water Pump
Courtesy of NISSAN MOTOR CO., U.S.A.