Power Steering Pressure Sensor

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

Reconnect all harness connectors disconnected.
Start engine and let it idle.
Check voltage between ECM terminal 12 and ground under the following conditions.

Fig 1: ECM Terminal 12 And Ground Voltage Conditions Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Voltage Between ECM Terminal 12 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.