Filament Check

WARNING: This page is about a different car, the 2008 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

When measuring voltage, wrap tin foil around the top of the negative probe. Then press the foil against the wire with your finger.

Fig 1: Checking Filament
Courtesy of NISSAN MOTOR CO., U.S.A.
Attach probe circuit tester (in Volt range) to middle portion of each filament.

Fig 2: Identifying Probe Circuit Tester To Middle Portion Of Filament
Courtesy of NISSAN MOTOR CO., U.S.A.
If a filament is burned out, circuit tester registers 0 or battery voltage.
To locate burned out point, move probe to left and right along filament. Test needle will swing abruptly when probe passes the point.

Fig 3: Identifying Burned Out Point
Courtesy of NISSAN MOTOR CO., U.S.A.