Infiniti F50. Manual — part 470
DTC P1225 TP SENSOR
EC-521
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P1225 TP SENSOR
PFP:16119
Component Description
EBS00MK4
Electric throttle control actuator consists of throttle control motor,
acceleration pedal position sensor, 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
EBS00MK5
The MIL will not light up for this diagnosis.
DTC Confirmation Procedure
EBS00MK6
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.
WITH CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Turn ignition switch “OFF” and wait at least 10 seconds.
4.
Turn ignition switch “ON”.
5.
If 1st trip DTC is detected, go to
EC-522, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB0145E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1225
1225
Closed throttle position learning
performance problem
Closed throttle position learning value is
excessively low.
●
Electric throttle control actuator
(TP sensor 1 and 2)
SEF058Y
EC-522
DTC P1225 TP SENSOR
Diagnostic Procedure
EBS00MK7
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.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace the electric throttle control actuator.
2.
Perform
EC-46, "Accelerator Pedal Released Position Learning"
.
3.
Perform
EC-46, "Throttle Valve Closed Position Learning"
4.
Perform
EC-46, "Idle Air Volume Learning"
>> INSPECTION END
Removal and Installation
EBS00MK8
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to
PBIB0083E
DTC P1226 TP SENSOR
EC-523
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P1226 TP SENSOR
PFP:16119
Component Description
EBS00MK9
Electric throttle control actuator consists of throttle control motor,
acceleration pedal position sensor, 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
EBS00MKA
The MIL will not light up for this diagnosis.
DTC Confirmation Procedure
EBS00MKB
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.
WITH CONSULT-II
1.
Turn ignition switch “ON”.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Turn ignition switch “OFF” and wait at least 10 seconds.
4.
Turn ignition switch “ON”.
5.
Repeat steps 3 and 4 for 32 times.
6.
If 1st trip DTC is detected, go to
EC-524, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB0145E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1226
1226
Closed throttle position
learning performance
problem
Closed throttle position learning is not performed
successfully, repeatedly.
●
Electric throttle control actuator
(TP sensor 1 and 2)
SEF058Y
EC-524
DTC P1226 TP SENSOR
Diagnostic Procedure
EBS00MKC
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.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace the electric throttle control actuator.
2.
Perform
EC-46, "Accelerator Pedal Released Position Learning"
.
3.
Perform
EC-46, "Throttle Valve Closed Position Learning"
4.
Perform
EC-46, "Idle Air Volume Learning"
>> INSPECTION END
Removal and Installation
EBS00MKD
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to
PBIB0083E
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