10. Check For Coolant Leak

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

Fig 1: Applying Pressure To Cooling System

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

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

OK or NG 

1. OK: GO TO 12. CHECK RADIATOR CAP .
2. NG: GO TO 11.