Toyota COMPUTER-CONTROLLED SYSTEM User Manual

ELECTRONIC CONTROL SYSTEM
- Throttle Position Senso r
2 . LINEAR TYP E
This sensor is composed of two sliders (at the
tips of which are mounted the contacts for the
IDL and VTA signals, respectively)
.
A constant 5 V is applied to the VC terminal
from the Engine ECU
. As the contact slides along
the resistor in accordance with the throttle valve
opening angle, a voltage is applied to the VTA
terminal in proportion to this angle .
When the throttle valve is closed completely,
the contact for the IDL signal connects the IDL
and E2 terminals .
The VTA and IDL output signals are
as shown in
the table below .
Slider (
contact for
VTA signal)
OHP 1 5
(V)
5-12 f i
}
Idlin g
Closed
~- Thro tt
le valve --~ Open
OHP 15
ELECTRICAL CIRCUITRY
OHP 1 5
*Depending on the model, this circuitry may
include both resistors Ri and R2, Ri only, or R2
only .
NOT E
Recent linear type throttle position sensors in-
clude models without an IDL point and the
model with an IDL point but its terminal is not
connected to the Engine ECU . In these models,
the Engine ECU detects idling condition perfor-
ming learned control by using the VTA signal .
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Toyota COMPUTER-CONTROLLED SYSTEM Specifications

General

Brand	Toyota
Model	COMPUTER-CONTROLLED SYSTEM
Category	Automobile Accessories
Language	English