Circuit Description

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

This sensor detects the rotation speed of the turbine which shows the input revolution of transmission. By comparing the input turbine speed signal (NT) with the counter gear speed sensor signal (SP2), the ECM detects the shift timing of the gears and appropriately controls the engine torque and hydraulic pressure according to various conditions. Thus, providing smooth gear shift.

Fig 1: Identifying Input Speed Sensor Location

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: DTC Chart

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Reference (Using an oscilloscope):

Check the waveform between terminals NT+ and NT- of the ECM connector.

Standard: Refer to the illustration.

REFERENCE CHART

Terminal	NT+ - NT-
Tool setting	1 V/DIV, 2ms/DIV
Vehicle condition	Engine idle speed (P or N position)

Fig 3: Identifying Engine Idle Speed Waveform