Throttle Position Sensor

Reconnect all harness connectors disconnected.
Perform THROTTLE VALVE CLOSED POSITION LEARNING .
Turn ignition switch ON.
Set selector lever to D position (A/T models) or 1st position (M/T models).
Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and engine ground under the following conditions.

Fig 1: Terminal Voltage Chart
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 Engine 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 .