Etcs-I (Electronic Throttle Control System-I) Construction; Throttle Control Motor - Toyota 1NZ-FE User Manual

Construction
Throttle Control
Motor
Throttle Valve
1) Throttle Position Sensor
The throttle position sensor is mounted on the throttle body to detect the opening angle of the throttle
valve. For details, refer to Main Components of Engine Control System section on page EG-34.

2) Throttle Control Motor

A DC motor with excellent response and minimal power consumption is used for the throttle control
motor. The ECM performs the duty ratio control of the direction and the amperage of the current that
flows to the throttle control motor in order to regulate the opening of the throttle valve.
Operation
1) General
The ECM drives the throttle control motor by determining the target throttle valve opening in accordance
with the respective operating condition.
D Non-Linear Control
D Idle Air Control
ENGINE - 1NZ-FE ENGINE
Throttle Body
Throttle Position
Sensor Portion
A
Cross Section
Reduction
Gears
View from A
Magnetic Yoke
Hall IC
(for Throttle Position Sensor)
Throttle Control Motor
EG-37
00REG05Y