4. Check For Coolant Leak

Apply pressure to the cooling system with a tester, and check if the pressure drops.

1. Testing pressure: 157 kPa (1.6 kg/cm ², 23 psi) 

OK or NG 

1. OK: GO TO 5.
2. NG: Check the following for leak. Refer to CHECKING COOLING SYSTEM FOR LEAKS .
   • Hose
   • Radiator
   • Water pump

Fig 1: Pressure Testing Cooling System

Courtesy of NISSAN MOTOR CO., U.S.A.