sensor NISSAN LATIO 2009 Service Repair Manual

EC
NP
O OK >> GO TO 4.
NG >> GO TO 8. Auto Active Test " .
2. Make sure that cooling fan operates at each speed.
OK or NG OK >> GO TO 4.
NG >> GO TO 8. Inspection " .
OK or NG OK >> GO TO 5.
NG >> Check the following for leak. Refer to CO-35, " Inspection " .
• Hose
• Radiator
• Water pump Checking Radiator Cap " .
OK or NG OK >> GO TO 6.
NG >> Replace radiator cap. .)
• Water control valve. (Refer to CO-47 .)
• Engine coolant temperature sensor. (Refer to EC-678 .)
OK or NG OK >> GO TO 7.
NG >> Replace malfunctioning component. Main 13 Causes of Overheating " .
>> INSPECTION END

DTC P1225 TP SENSOR
EC-895
< SERVICE INFOMATION >
[MR TYPE 1] C
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DTC P1225 TP SENSOR
Component Description INFOID:0000000004537401
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 Logic INFOID:0000000004537402
The MIL will not light up for this diagnosis.
DTC Confirmation Procedure INFOID:0000000004537403
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.
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 EC-895, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:00000000045374041.
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-572, " Throttle Valve Closed Position Learning " .
3. Perform EC-572, " 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) BBIA0711E

DTC P1226 TP SENSOR
EC-897
< SERVICE INFOMATION >
[MR TYPE 1] C
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DTC P1226 TP SENSOR
Component Description INFOID:0000000004537406
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 Logic INFOID:0000000004537407
The MIL will not light up for this diagnosis.
DTC Confirmation Procedure INFOID:0000000004537408
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.
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. Repeat steps 3 and 4 for 32 times.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-897, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:00000000045374091.
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-572, " 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

EC-904< SERVICE INFOMATION >
[MR TYPE 1]
DTC P1564 ASCD STEERING SWITCH
Diagnosis Procedure INFOID:00000000045374201.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-632, " Ground Inspection " .
OK or NG OK >> GO TO 2.
NG >> Repair or replace ground connections. 2.
CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-III
1. Turn ignition switch ON.
2. Select “MAIN SW”, “RESUME/ACC SW”, “SET SW and “CANCEL SW” in “DATA MONITOR” mode with
CONSULT-III.
3. Check each item indication under the following conditions. TERMI-
NAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
94 R ASCD steering switch [Ignition switch: ON]
• ASCD steering switch: OFF Approximately 4V
[Ignition switch: ON]
• MAIN switch: Pressed Approximately 0V
[Ignition switch: ON]
• CANCEL switch: Pressed Approximately 1V
[Ignition switch: ON]
• RESUME/ACCELERATE switch: Pressed Approximately 3V
[Ignition switch: ON]
• SET/COAST switch: Pressed Approximately 2V
95 B Sensor ground [Engine is running]
• Warm-up condition
• Idle speed Approximately 0V:
Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15 BBIA0698E
Switch Monitor item Condition Indication
MAIN switch MAIN SW Pressed ON
Released OFF
CANCEL switch CANCEL SW Pressed ON
Released OFF

.
• If DTC P1715 is displayed with DTC U1010, first pe rform the trouble diagnosis for DTC U1010. Refer
to EC-635 .
• If DTC P1715 is displayed with DTC P0335, first pe rform the trouble diagnosis for DTC P0335. Refer
to EC-775 .
• If DTC P1715 is displayed with DTC P0340 first perform the trouble diagnosis for DTC P0340.
Refer to EC-781 .
• If DTC P1715 is displayed with DTC P0605, first pe rform the trouble diagnosis for DTC P0605. Refer
to EC-872 .
The MIL will not lights up for this diagnosis.
Diagnosis Procedure INFOID:0000000004537436.
OK or NG OK >> GO TO 2.
NG >> Perform trouble shooting relevant to DTC indicated. .
>> INSPECTION END
MONITOR ITEM CONDITION SPECIFICATION
I/P PULLY SPD • Vehicle speed: More than 20 km/h (12MPH) Almost the same speed as the
tachometer indication DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1715
1715 Input speed sensor
(Turbine revolution sen-
sor)
(TCM output) Turbine revolution sensor signal is differ-
ent from the theoretical value calculated
by ECM from revolution sensor signal and
engine rpm signal. • Harness or connectors
(CAN communication line is open or shorted)
• Harness or connectors
(Turbine revolution sensor circuit is open or
shorted)
• TCM

EC
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DTC P1715 INPUT SPEED SENS
OR (PRIMARY SPEED SENSOR)
Description INFOID:0000000004537437
ECM receives primary speed sensor signal from TCM through CAN communication line.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004537438
Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004537439
NOTE:
• If DTC P1715 is displayed with DTC U1000 or U 1001 first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-633 .
• If DTC P1715 is displayed with DTC U1010, firs t perform the trouble diagnosis for DTC U1010. Refer
to EC-635 .
• If DTC P1715 is displayed with DT C P0335, first perform the trouble diagnosis for DTC P0335. Refer
to EC-775 .
• If DTC P1715 is displayed with DTC P0340 firs t perform the trouble diagnosis for DTC P0340.
Refer to EC-781 .
• If DTC P1715 is displayed with DT C P0605, first perform the trouble diagnosis for DTC P0605. Refer
to EC-872 .
The MIL will not light up for this diagnosis.
DTC Confirmation Procedure INFOID:0000000004537440
CAUTION:
Always drive vehicle at a safe speed.
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.
1. Start engine.
2. Drive vehicle at a speed of more than 50 km/h (31 MPH) for at least 5 seconds.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to EC-919, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004537441.
OK or NG OK >> GO TO 2.
NG >> Perform trouble shooting relevant to DTC indicated. .
MONITOR ITEM CONDITION SPECIFICATION
I/P PULLY SPD • Vehicle speed: More than 20 km/h (12MPH) Almost the same speed as the
tachometer indication DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1715
1715 Input speed sensor
(Primary speed sensor)
(TCM output) Primary speed sensor signal is different
from the theoretical value calculated by
ECM from secondary speed sensor signal
and engine rpm signal. • Harness or connectors
(CAN communication line is open or shorted)
• Harness or connectors (Primary speed sensor circuit is open or short-
ed)
• TCM

EC
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DTC P2101 ELECTRIC THRO
TTLE CONTROL FUNCTION
Description INFOID:0000000004537455
NOTE:
If DTC P2101 is displayed with DTC P2100 or P2119, first perform the trouble diagnosis for DTC P2100
or P2119. Refer to EC-925 or
EC-940 .
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc.
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
On Board Diagnosis Logic INFOID:0000000004537456
This self-diagnosis has the on e trip detection logic.
FAIL-SAFE MODE When the malfunction is detec ted, the ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation Procedure INFOID:0000000004537457
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.
TESTING CONDITION:
Before performing the follo wing procedure, confirm that battery vo ltage is more than 11V when engine
is running.
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
4. If DTC is detected, go to EC-931, " Diagnosis Procedure " .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2101
2101 Electric throttle control
performance Electric throttle control function does not oper-
ate properly. • Harness or connectors
(Throttle control motor circuit is open or
shorted)
• Electric throttle control actuator Engine operating condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) b y the return
spring.

EC
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DTC P2118 THROTTLE CONTROL MOTOR
Component Description INFOID:0000000004537462
The throttle control motor is operated by the ECM and it opens and closes the throttle valve.
The current opening angle of the throttle valve is detected by the throttle position sensor and it provides feed-
back to the ECM to control the throttle control motor to make the throttle valve opening angle properly in
response to driving condition.
On Board Diagnosis Logic INFOID:0000000004537463
This self-diagnosis has the on e trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM ent ers fail-safe mode and the MIL lights up.
DTC Confirmation Procedure INFOID:0000000004537464
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.
1. Turn ignition switch ON and wait at least 2 seconds.
2. Start engine and let it idle for 5 seconds.
3. Check DTC.
4. If DTC is detected, go to EC-937, " Diagnosis Procedure " .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2118
2118 Throttle control motor
circuit short ECM detects short in both circuits between
ECM and throttle control motor. • Harness or connectors
(Throttle control motor circuit is shorted.)
• Electric throttle control actuator
(Throttle control motor) Engine operating condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) b y the return
spring.

EC-942< SERVICE INFOMATION >
[MR TYPE 1]
DTC P2122, P2123 APP SENSOR
DTC P2122, P2123 APP SENSOR
Component Description INFOID:0000000004537473
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensor detects the accelera-
tor position and sends a signal to the ECM.
Accelerator pedal position sensor has two sensors. These sensors
are a kind of potentiometers which transform the accelerator pedal
position into output voltage, and emit the voltage signal to the ECM.
In addition, these sensors detect the opening and closing speed of
the accelerator pedal and feed the voltage signals to the ECM. The
ECM judges the current opening angle of the accelerator pedal from
these signals and controls the throttle control motor based on these
signals.
Idle position of the accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal positi on sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-III Reference Value in Data Monitor Mode INFOID:0000000004537474
Specification data are reference values.
*: Accelerator pedal position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage.
On Board Diagn osis Logic INFOID:0000000004537475
These self-diagnoses have the one trip detection logic.
NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-874 .
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation Procedure INFOID:0000000004537476
NOTE: PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SEN 1 • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.6 - 0.9V
Accelerator pedal: Fully depressed 4.0 - 4.8V
ACCEL SEN 2* • Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.6 - 0.9V
Accelerator pedal: Fully depressed 3.9 - 4.8V
CLSD THL POS • Ignition switch: ON
(Engine stopped) Accelerator pedal:
Fully released ON
Accelerator pedal: Slightly depressed OFF DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2122
2122 Accelerator pedal position
sensor 1 circuit low input An excessively low
voltage from the APP
sensor 1 is sent to ECM. • Harness or connectors
(APP sensor 1 circuit is open or shorted.)
• Accelerator pedal position sensor (APP sensor 1)
P2123
2123 Accelerator pedal position
sensor 1 circuit high input An excessively high voltage from the APP
sensor 1 is sent to ECM. Engine operating condition in fail-safe mode
The ECM controls the electric throttle control actuator in regulating the throttle opening in order for the idle position to be within +10
degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal condition.
So, the acceleration will be poor.

DTC P2122, P2123 APP SENSOR
EC-943
< SERVICE INFOMATION >
[MR TYPE 1] C
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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 8V at idle.
1. Start engine and let it idle for 1 second.
2. Check DTC.
3. If DTC is detected, go to EC-944, " Diagnosis Procedure " .
Wiring Diagram INFOID:0000000004537477 BBWA2652E