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EC
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3. Check if foreign matter is c
aught between the throttle valve (1)
and the housing.
- Electric throttle control actuator (2)
Is the inspection result normal? YES >> GO TO 2.
NO >> Remove the foreign matter and clean the electric throttle
control actuator inside. Special Repair Requirement " .
>> INSPECTION END
Special Repair Requirement INFOID:0000000004780256THROTTLE VALVE CLOSED POSITION L
EARNING : Special Repair Requirement "
>> GO TO 2.
IDLE AIR VOLUME LEARNING : Special Repair Requirement "
>> END
Page 1730 of 4331
![NISSAN LATIO 2009 Service Repair Manual EC-374< COMPONENT DIAGNOSIS >
[HR16DE]
P1226 TP SENSOR
P1226 TP SENSOR
Description INFOID:0000000004780257
Electric throttle control actuator consists of throttle control motor,
throttle posit NISSAN LATIO 2009 Service Repair Manual EC-374< COMPONENT DIAGNOSIS >
[HR16DE]
P1226 TP SENSOR
P1226 TP SENSOR
Description INFOID:0000000004780257
Electric throttle control actuator consists of throttle control motor,
throttle posit](/manual-img/5/57359/w960_57359-1729.png)
EC-374< COMPONENT DIAGNOSIS >
[HR16DE]
P1226 TP SENSOR
P1226 TP SENSOR
Description INFOID:0000000004780257
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 two sensors. These sensors are a
kind of potentiometer which transform the throttle valve position into
output voltage, and emit the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and controls the throttle valve opening angle in response to
driving conditions via the throttle control motor.
DTC Logic INFOID:0000000004780258
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE 1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conduc ted, 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 10 V at idle.
>> GO TO 2. 2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Turn ignition switch OFF, wait at least 10 seconds.
3. Turn ignition switch ON.
4. Repeat steps 2 and 3 for 32 times.
5. Check 1st trip DTC.
Is 1st trip DTC detected? YES >> Go to
EC-374, " Diagnosis Procedure " .
NO >> INSPECTION END
Diagnosis Procedure INFOID:00000000047802591.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct. PBIB0145E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1226 Closed throttle position
learning performance Closed throttle position learning is not performed
successfully, repeatedly. • Electric throttle control actuator
(TP sensor 1 and 2)
Page 1731 of 4331
P1226 TP SENSOR
EC-375
< COMPONENT DIAGNOSIS >
[HR16DE] C
D E
F
G H
I
J
K L
M A EC
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3. Check if foreign matter is c
aught between the throttle valve (1)
and the housing.
- Electric throttle control actuator (2)
Is the inspection result normal? YES >> GO TO 2.
NO >> Remove the foreign matter and clean the electric throttle
control actuator inside. 2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator.
2. Perform EC-375, " Special Repair Requirement " .
>> INSPECTION END
Special Repair Requirement INFOID:00000000047802601.
PERFORM THROTTLE VALVE CL OSED POSITION LEARNING
Refer to EC-31, " THROTTLE VALVE CLOSED POSITION L
EARNING : Special Repair Requirement "
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
Refer to EC-32, " IDLE AIR VOLUME LEARNING : Special Repair Requirement "
>> END JMBIA0447ZZ
Page 1732 of 4331
YES >> Go to
EC-376, " Diagnosis Procedure " .
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000004780263IDLE AIR VOLUME LEARNING : Special Repair Requirement " .
Is Idle Air Volume Learning carried out successfully? YES >> GO TO 2.
NO >> Follow the instruction of Idle Air Volume Learning.
Page 1733 of 4331
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Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace malfunctioning part DTC Logic " .
Is the inspection result normal? YES >> GO TO 4.
NO >> Go to EC-231, " Diagnosis Procedure " for DTC P0171.
Diagnosis Description " .
3. Perform DTC CONFIRMATION PROCEDURE. Refer to EC-376, " DTC Logic " .
Is the 1st trip DTC P1421 displayed again? YES >> GO TO 5.
NO >> INSPECTION END ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment " .
>> INSPECTION END
Page 1734 of 4331
DTC Logic " .
• If DTC P1715 is displayed with DTC P0340, first pe rform the trouble diagnosis for DTC P0340. Refer
to EC-268, " DTC Logic " .
• If DTC P1715 is displayed with DTC P0605, first pe rform the trouble diagnosis for DTC P0605. Refer
to EC-355, " DTC Logic " .
• If DTC P1715 is displayed with DTC P0607, first pe rform the trouble diagnosis for DTC P0607. Refer
to EC-357, " DTC Logic " .
DTC CONFIRMATION PROCEDURE YES >> Go to
EC-378, " Diagnosis Procedure " .
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000004780296OBD-II Diagnostic Trouble Code (DTC) " .
Is the inspection result normal? YES >> GO TO 2.
NO >> Perform trouble shooting relevant to DTC indicated.
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>> INSPECTION END
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YES >> Go to
EC-381, " Diagnosis Procedure " .
NO >> INSPECTION END DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1805 Brake switch A brake switch signal is not sent to ECM
for extremely long time while the vehicle is
driving. • Harness or connectors
(Stop lamp switch circuit is open or shorted.)
• Stop lamp switch