Throttle Position Sensor

WARNING: This page is about a different car, the 2004 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

Reconnect all harness connectors disconnected.
Perform Throttle Valve Closed Position Learning .
Turn ignition switch ON.
Set selector lever to D (A/T), 1st (M/T) position.
Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and ground under the following conditions.

Fig 1: ECM Terminals And Ground Voltage Table
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Voltage Between ECM Terminals 50 (Tp Sensor 1 Signal), 69 (Tp Sensor 2 Signal) And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
If NG, replace electric throttle control actuator and go to the next step.
Perform Throttle Valve Closed Position Learning .
Perform Idle Air Volume Learning .