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 2 signal) and body ground under the following conditions.

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

Fig 2: Terminal Voltage Based On Accelerator Pedal
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 .