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PBIB0145E
Component Description
NFEC1340
Electric Throttle Control Actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds
to the throttle valve 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 from
these signals and the ECM controls the throttle control motor to
make the throttle valve opening angle properly in response to driv-
ing condition.
On Board Diagnosis Logic
NFEC1342
DTC No.
Trouble diagnosis
name
DTC Detecting Condition Possible Cause
P1225
1225
Closed throttle posi-
tion learning perfor-
mance problem
Closed throttle position learning value is exces-
sively low.
I Electric throttle control actuator (TP
sensor 1 and 2)
DTC Confirmation Procedure
NFEC1343
NOTE:
If “DTC Confirmation Procedure” has been previously conducted,
always turn ignition switch “OFF” and wait at least 10 seconds
before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that bat-
tery voltage is more than 10V at idle.
SEF058Y
With CONSULT-II
1) Turn ignition switch “ON”.
2) Select “DATA MONITOR” mode with CONSULT-II.
3) Turn ignition switch “OFF”, wait at least 10 seconds.
4) Turn ignition switch “ON”.
5) If 1st trip DTC is detected, go to “Diagnostic Procedure”,
EC-558.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1225 TP SENSOR
Component Description
EC-557
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