Throttle Position Sensor

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

Fig 1: Throttle Position Sensor Terminal Voltage Specification
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Voltage Between ECM Terminals 50, 69 & 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 .