Throttle Position Sensor

WARNING: This page is about a different car, the 2004 Infiniti FX45. 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.
Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and ground, see Fig 1 , under the following conditions, see Fig 2 .

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

Fig 2: Testing Throttle Position Sensor Circuit Voltage
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 .