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EC-920
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DTC P1225 TP SENSOR
>>
INSPECTION END
Removal and InstallationINFOID:0000000005532786
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-137.
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![NISSAN LATIO 2010 Service Repair Manual DTC P1226 TP SENSOREC-921
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DTC P1226 TP SENSOR
Component DescriptionINFOID:0000000005532787
Electric throttle control actuator
consists NISSAN LATIO 2010 Service Repair Manual DTC P1226 TP SENSOREC-921
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DTC P1226 TP SENSOR
Component DescriptionINFOID:0000000005532787
Electric throttle control actuator
consists](/manual-img/5/57358/w960_57358-2185.png)
DTC P1226 TP SENSOREC-921
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DTC P1226 TP SENSOR
Component DescriptionINFOID:0000000005532787
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 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 driving condition.
On Board Diagnosis LogicINFOID:0000000005532788
The MIL will not light up for this diagnosis.
DTC Confirmation ProcedureINFOID:0000000005532789
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 10 V at idle.
1. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Repeat steps 3 and 4 for 32 times.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-921, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005532790
1.CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct.
3. Check if foreign matter is c aught between the throttle valve (1)
and the housing.
- : Vehicle front
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-580, "
Throttle Valve Closed Position Learning".
PBIB0145E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1226
1226 Closed throttle position
learning performance Closed throttle position learning is not per-
formed successfully, repeatedly. • Electric throttle control actuator
(TP sensor 1 and 2)
BBIA0711E
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EC-922
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DTC P1226 TP SENSOR
3. Perform
EC-580, "Idle Air Volume Learning".
>> INSPECTION END
Removal and InstallationINFOID:0000000005532791
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to EM-137.
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![NISSAN LATIO 2010 Service Repair Manual DTC P1421 COLD START CONTROLEC-923
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DTC P1421 COLD START CONTROL
DescriptionINFOID:0000000005532792
ECM controls ignition timing and eng NISSAN LATIO 2010 Service Repair Manual DTC P1421 COLD START CONTROLEC-923
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DTC P1421 COLD START CONTROL
DescriptionINFOID:0000000005532792
ECM controls ignition timing and eng](/manual-img/5/57358/w960_57358-2187.png)
DTC P1421 COLD START CONTROLEC-923
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DTC P1421 COLD START CONTROL
DescriptionINFOID:0000000005532792
ECM controls ignition timing and engine idle speed when engine is started with prewarming up condition.
This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions.
On Board Diagnosis LogicINFOID:0000000005532793
DTC Confirmation ProcedureINFOID:0000000005532794
NOTE:
• 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.
• If DTC P1421 is displayed with other DTC, firs t perform the trouble diagnosis for other DTC.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
WITH CONSULT-III
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Select “DATA MONITOR” mode with CONSULT-III.
4. Check that the “COOLAN TEMP/S” indication is between 4°C (39° F) and 36 °C (97° F).
If “COOLAN TEMP/S” indication is within the specified value, go to the following step.
If “COOLAN TEMP/S” indication is out of the specified value, cool engine down or warm engine up and go
to step 1.
5. Start engine and let it idle for 5 minutes.
6. Check 1st trip DTC.
7. If 1st trip DTC is detected, go to EC-923, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005532795
1.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-580, "
Idle Air Volume Learning".
Is Idle Air Volume Learning carried out successfully?
Ye s o r N o
Yes >> GO TO 2.
No >> Follow the instruction of Idle Air Volume Learning.
2.CHECK INTAKE SYSTEM
Check for the cause of intake air volume lacking. Refer to the following.
• Crushed intake air passage
• Intake air passage clogging
OK or NG
OK >> GO TO 3.
NG >> Repair or replace malfunctioning part
3.CHECK FUEL INJECTION SYSTEM FUNCTION
Perform EC-758, "
DTC Confirmation Procedure" for DTC P0171.
OK or NG
OK >> GO TO 4.
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P1421
1421 Cold start emission reduction
strategy monitoring ECM does not control ignition timing and engine
idle speed properly when engine is started with
prewarming up condition. • Lack of intake air volume
• Fuel injection system
•ECM
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EC-924
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DTC P1421 COLD START CONTROL
NG >> Go to EC-761, "Diagnosis Procedure" for DTC P0171.
4.PERFORM DTC CONFIRMATION PROCEDURE
1. Erase DTC.
2. Perform DTC Confirmation Procedure.
See EC-923, "
DTC Confirmation Procedure".
3. Is the 1st trip DTC P1421 displayed again?
Ye s o r N o
Ye s > > G O T O 5 .
No >> INSPECTION END
5.REPLACE ECM
1. Replace ECM.
2. Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs.
Refer to BL-249, "
ECM Re-communicating Function".
3. Perform EC-580, "
VIN Registration".
4. Perform EC-580, "
Accelerator Pedal Released Position Learning".
5. Perform EC-580, "
Throttle Valve Closed Position Learning".
6. Perform EC-580, "
Idle Air Volume Learning".
>> INSPECTION END
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![NISSAN LATIO 2010 Service Repair Manual DTC P1564 ASCD STEERING SWITCHEC-925
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DTC P1564 ASCD STEERING SWITCH
Component DescriptionINFOID:0000000005532796
ASCD steering switch h NISSAN LATIO 2010 Service Repair Manual DTC P1564 ASCD STEERING SWITCHEC-925
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DTC P1564 ASCD STEERING SWITCH
Component DescriptionINFOID:0000000005532796
ASCD steering switch h](/manual-img/5/57358/w960_57358-2189.png)
DTC P1564 ASCD STEERING SWITCHEC-925
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DTC P1564 ASCD STEERING SWITCH
Component DescriptionINFOID:0000000005532796
ASCD steering switch has variant values of electrical
resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
Refer to EC-522
for the ASCD function.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005532797
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005532798
This self-diagnosis has the on e trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-893
.
1. ASCD steering switch 2. MAIN switch3. CANCEL switch
4. RESUME/ACCELERATE switch 5. SET/COAST switch
BBIA0707E
Monitor item ConditionSpecification
MAIN SW • Ignition switch: ON MAIN switch: Pressed
ON
MAIN switch: Released OFF
CANCEL SW • Ignition switch: ONCANCEL switch: Pressed
ON
CANCEL switch: Released OFF
RESUME/ACC SW • Ignition switch: ON RESUME/ACCELERATE switch:
Pressed
ON
RESUME/ACCELERATE switch: Re-
leased OFF
SET SW • Ignition switch: ON SET/COAST switch: Pressed
ON
SET/COAST switch: Released OFF
DTC No.Trouble diagnosis
name DTC detecting condition
Possible cause
P1564
1564 ASCD steering switch • An excessively high voltage signal from the
ASCD steering switch is sent to ECM.
• ECM detects that input signal from the
ASCD steering switch is out of the specified
range.
• ECM detects that the ASCD steering switch
is stuck ON. • Harness or connectors
(ASCD switch circuit is open or shorted.)
• ASCD steering switch
•ECM
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EC-926
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DTC P1564 ASCD STEERING SWITCH
DTC Confirmation Procedure
INFOID:0000000005532799
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.
1. Turn ignition switch ON and wait at least 10 seconds.
2. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
3. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
4. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.
5. Press SET/COAST switch for at least 10 seconds , then release it and wait at least 10 seconds.
6. Check DTC.
7. If DTC is detected, go to EC-928, "
Diagnosis Procedure".
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DTC P1564 ASCD STEERING SWITCHEC-927
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Wiring DiagramINFOID:0000000005532800
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals wh
en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
ABBWA0362GB
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