Infiniti FX35 / FX45. Manual - part 570
DTC P1225 TP SENSOR
EC-1041
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DTC P1225 TP SENSOR
Component Description
INFOID:0000000001326904
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 addi-
tion, 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 sig-
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
tion.
On Board Diagnosis Logic
INFOID:0000000001326905
The MIL will not light up for this diagnosis.
DTC Confirmation Procedure
INFOID:0000000001326906
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 battery voltage is more than 10V at idle.
1.
Turn ignition switch ON.
2.
Turn ignition switch OFF, wait at least 10 seconds.
3.
Turn ignition switch ON.
4.
Check 1st trip DTC.
5.
If 1st trip DTC is detected, go to
EC-1041, "Diagnosis Procedure"
Diagnosis Procedure
INFOID:0000000001326907
1.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1.
Turn ignition switch OFF.
2.
Remove the intake air duct.
3.
Check if foreign matter is caught between the throttle valve (1)
and the housing.
-
Illustration shows the view with intake air duct removed.
OK or NG
OK
>> GO TO 2.
NG
>> Remove the foreign matter and clean the electric throttle
control actuator inside.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace the electric throttle control actuator.
2.
EC-663, "Throttle Valve Closed Position Learning"
3.
EC-663, "Idle Air Volume Learning"
.
PBIB0145E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1225
1225
Closed throttle position
learning performance
Closed throttle position learning value is exces-
sively low.
• Electric throttle control actuator
(TP sensor 1 and 2)
PBIB3247E