Altima V6-3.5L (VQ35) (2003)
The leak detector is a delicate device. In order to use the leak detector properly, read the operating instructions and perform any specified maintenance.
1. Position probe approximately 5 mm (3/16 in) away from point to be checked.
2. When testing, circle each fitting completely with probe.
3. Move probe along component approximately 25 to 50 mm (1 to 2 in)/sec.
CHECKING PROCEDURE
To prevent inaccurate or false readings, make sure there is no refrigerant vapor, shop chemicals, or cigarette smoke in the vicinity of the vehicle. Perform
the leak test in calm area (low air/wind movement) so that the leaking refrigerant is not dispersed.
1. Turn engine OFF.
2. Connect a suitable A/C manifold gauge set to the A/C service ports.
3. Check if the A/C refrigerant pressure is at least 345 kPa (3.52 kg/sq.cm, 50 psi) above 16°C (61°F). If less than specification, recover/evacuate
and recharge the system with the specified amount of refrigerant.
NOTE: At temperatures below 16°C (61°F), leaks may not be detected since the system may not reach 345 kPa (3.54 kg/sq.cm, 50 psi).
4. Conduct the leak test from the high side (compressor discharge a to evaporator inlet f) to the low side (evaporator drain hose g to shaft seal l).
Perform a leak check for the following areas carefully. Clean the component to be checked and move the leak detected probe completely around
the connection/component.
Compressor
Check the fitting of high- and low-pressure hoses, relief valve and shaft seal. Liquid tank Check the refrigerant pressure sensor.
Service valves