Positive Crankcase Ventilation

Run engine at idle. Remove ventilation hose from PCV valve, hissing noise should be heard from hose and a strong vacuum should be felt immediately when finger is placed over valve inlet. If not, check hose and hose connections for leaks or obstructions. Check PCV valve. Service or replace as necessary.

Fig 1: Component Test Chart Symbol Identification

G121219

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

Fig 2: Pathfinder & Pickup 4-Cylinder Air Injection Valve Check Chart

G121303

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

Fig 3: Pathfinder & Pickup V6 Air Injection Valve Check Chart

G121304

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

Fig 4: Pathfinder & Pickup 4-Cylinder & V6 Fuel Pump Check Chart

G121329

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

Fig 5: Pathfinder & Pickup 4-Cylinder & V6 Fuel Pump Check Chart

G121332

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

Fig 6: Pathfinder & Pickup 4-Cylinder & V6 Idle Switch Check Chart

G121334

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

Fig 7: Pathfinder & Pickup 4-Cylinder & V6 Idle-Up Check Chart

G121336

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

Fig 8: Pathfinder & Pickup 4-Cylinder Injector Malfunction Check Chart

G121340

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

Fig 9: Pathfinder & Pickup Load Signal Check Chart

G121347

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

Fig 10: Pathfinder & Pickup 4-Cylinder & V6 Main Relay Check Chart

G121348

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

Fig 11: Pathfinder & Pickup 4-Cylinder Clutch/Neutral/Inhibitor Switch Check Chart

G121350

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

Fig 12: Pathfinder & Pickup 4-Cylinder Plug Switching Check Chart

G121356

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

Fig 13: Pathfinder & Pickup 4-Cylinder & V6 ECU Power Source & Ground Check Chart

G121359

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

Fig 14: Pathfinder & Pickup 4-Cylinder & V6 Start Signal Check Chart

G121608

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

Fig 15: Pathfinder & Pickup Vehicle Speed Sensor Check Chart

G121373

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