Throttle Position Sensor

WARNING: This page is about a different car, the 2006 Nissan Xterra. 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 (A/T), 1st (M/T).

Check voltage between ECM terminals 50 (TP sensor 1 signal), 69 (TP sensor 2 signal) and ground under the following conditions.

Fig 1: Identifying Voltage Between ECM Terminals 50 (TP Sensor 1 Signal), 69 (TP Sensor 2 Signal) And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

VOLTAGE REFERENCE

Terminal	Accelerator pedal	Voltage
50 (Throttle position sensor 1)	Fully released	More than 0.36V
50 (Throttle position sensor 1)	Fully depressed	Less than 4.75V
69 (Throttle position sensor 2)	Fully released	Less than 4.75V
69 (Throttle position sensor 2)	Fully depressed	More than 0.36V

If NG, replace electric throttle control actuator and go to the next step.
Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".
Perform "IDLE AIR VOLUME LEARNING ".