Power Steering Pressure Sensor

WARNING: This page is about a different car, the 2004 Infiniti I35. 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 89 and ground under the following conditions.

Fig 1: Checking Voltage Between ECM Terminal 89 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Displaying Terminal Condition And Voltage
Courtesy of NISSAN MOTOR CO., U.S.A.