Checking Cooling System Hoses

WARNING: This page is about a different car, the 2018 Nissan NV3500 HD and 2018 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.

Check hoses for the following:

Improper attachment
Leaks
Cracks
Dents
Bulges
Internal obstruction
Damage
Loose connections
Chafing
Deterioration