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PBIB0145E
Component Description
NFEC1365
Electric Throttle Control Actuator Consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds
to the throttle vale movement.
The throttle position sensor has the two sensors. These sensors
are a kind of potentiometers which transform the throttle valve
position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of
the throttle valve and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the throttle valve form
these signal and the ECM controls the throttle control motor to
make the throttle valve opening angle properly in response to driv-
ing condition.
CONSULT-II Reference Value in Data Monitor
Mode
NFEC1366
Specification data are reference values.
MONITOR ITEM CONDITION SPECIFICATION
THRTL SEN1
THRTL SEN2
I Ignition switch:
ON (Engine stopped)
I Shift lever:
D (A/T model)
1st (M/T model)
Accelerator pedal: Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
On Board Diagnosis Logic
NFEC1434
This self-diagnosis has the one trip detection logic.
DTC No.
Trouble diagnosis
name
DTC Detecting Condition Possible Cause
P0221
0221
Throttle position sen-
sor circuit range/
performance problem
Rationally incorrect voltage is sent to ECM com-
pared with the signals from TP sensor 1 and TP
sensor 2.
I Harness or connector
(The TP sensor 1 and 2 circuit is
open or shorted.)
I Electric throttle control actuator (TP
sensor 1 and 2)
FAIL-SAFE MODE
NFEC1434S01
When the malfunction is detected, the ECM enters in fail-safe mode and the MIL lights up.
Engine operation condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within
+10 degrees.
The ECM regulates an opening speed of approx. 5 seconds to an opening of 10 degrees.
So, the acceleration will be poor.
DTC P0221 TP SENSOR
Component Description
EC-290
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