Throttle Position Sensor

WARNING: This page is about a different car, the 2005 Nissan Maxima. 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 position (A/T), 1st position (M/T).
Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and ground under the following conditions.

Fig 1: Throttle Position Sensor Voltage Chart
Courtesy of NISSAN MOTOR CO., U.S.A.
If NG, replace electric throttle control actuator and go to the next step.

Fig 2: Checking Voltage Between ECM Terminals & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.
Perform THROTTLE VALVE CLOSED POSITION LEARNING .
Perform IDLE AIR VOLUME LEARNING .