4. Check Power Supply For NATS Antenna Amp.

WARNING: This page is about a different car, the 2004 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition switch ON.
Check voltage between NATS antenna amp. connector M21 terminal 1 and ground.
1. 1 (W/L) - Ground: Battery voltage

OK or NG

OK >> GO TO 5
NG >> Repair or replace harness.

Fig 1: Checking Voltage Between NATS Antenna AMP. Connector M21 Terminal 1 & Ground

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