1. Check TCM Power Source Circuit

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". (Do not start engine.)
Check voltage between TCM terminals and ground.

Fig 1: TCM Power Source Circuit Voltage Specifications
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Voltage
Courtesy of NISSAN MOTOR CO., U.S.A.
Turn ignition switch "OFF".
Check voltage between TCM terminals and ground.

Fig 3: TCM Power Source Circuit Voltage Specifications

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

OK or NG

OK: GO TO 3 .
NG: GO TO 2.