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 ground under the following conditions.

Fig 1: Checking Voltage Between ECM Terminals 50 TP Sensor 1 Signal 69 TP Sensor 2 Signal
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Connector Terminals Voltage Specification
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 ".