Nissan Frontier. Manual - part 568
P1225 TP SENSOR
EC-843
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE FOR USA AND CANADA]
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P1225 TP SENSOR
Component Description
INFOID:0000000009481525
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:0000000009481526
The MIL will not illuminate for this diagnosis.
DTC Confirmation Procedure
INFOID:0000000009481527
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next step.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
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 and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000009481528
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 and
the housing.
OK or NG
OK
>> GO TO 2.
NG
>> Remove the foreign matter and clean the electric throttle
control actuator inside, and then perform throttle valve
closed position learning. Refer to
Valve Closed Position Learning"
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
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)
BBIA0554E