sensor NISSAN LATIO 2009 Service Repair Manual

YES >> Go to
EC-359, " Diagnosis Procedure " .
NO >> INSPECTION END DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0643 Sensor power supply
circuit short ECM detects a voltage of power source
for sensor is excessively low or high. • Harness or connectors
(APP sensor 1 circuit is shorted.)
(TP sensor circuit is shorted.)
(Battery current sensor circuit is shorted.)
(PSP sensor circuit is shorted.)
[Camshaft position sens or (PHASE) circuit is
shorted.]
• Accelerator pedal position sensor
• Throttle position sensor
• Battery current sensor
• Power steering pressure sensor
• Camshaft position sensor (PHASE)

YES >> GO TO 7.
NO >> GO TO 3. YES >> GO TO 4.
NO >> Repair short to ground or short to power in harness or connectors. Component Inspection " .)
Is the inspection result normal? YES >> GO TO 5.
NO >> Replace camshaft position sensor (PHASE). Component Inspection " .
Is the inspection result normal? YES >> GO TO 9.
NO >> GO TO 6. ACCELERATOR PEDAL RELEASED POSITION
LEARNING : Special Repair Require-ment " .
>> INSPECTION END Component Inspection " .
Is the inspection result normal? YES >> GO TO 9.
NO >> GO TO 8. APP sensor
Ground Voltage
Connector Terminal
E12 4 Ground Approx. 5 V

EC
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P1148 CLOSED LOOP CONTROL
DTC Logic INFOID:0000000004780249
DTC DETECTION LOGIC NOTE:
DTC P1148 is displayed with another DTC for A/F sensor 1.
Perform the trouble diagnosi s for the corresponding DTC.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1148 Closed loop control function The closed loop control function for bank 1 does
not operate even when vehicle is driving in the
specified condition. • Harness or connectors
(The A/F sensor 1 circuit is open or
shorted.)
• A/F sensor 1
• A/F sensor 1 heater
The closed loop control function for bank 2 does
not operate even when vehicle is driving in the
specified condition.

Checking Radiator Cap " .
Is the inspection result normal? YES >> GO TO 5.
NO >> Replace radiator cap. Inspection " .
Is the inspection result normal? YES >> GO TO 6.
NO >> Replace thermostat. Inspection " .
Is the inspection result normal? YES >> GO TO 7.
NO >> Replace water control valve Component Inspection " .
Is the inspection result normal? YES >> GO TO 8.
NO >> Replace engine coolant temperature sensor. Anti-freeze Coolant Mixture Ratio "
3 • Coolant level • Visual Coolant up to MAX level in
reservoir tank and radiator
filler neck CO-11, " Inspection "
4 • Radiator cap • Pressure tester
CO-14, " Checking Radiator Cap "
ON*
2
5 • Coolant leaks • Visual No leaks CO-11, " Inspection "
ON*
2
6 • Thermostat • Touch the upper and
lower radiator hosesBoth hoses should be hot
CO-23, " Inspection "
ON*
1
7 • Cooling fan motor • CONSULT-III Operating EC-422, " Component
Function Check "
OFF 8 • Combustion gas leak • Color checker chemical
tester 4 Gas analyzerNegative —
ON* 3
9 • Coolant temperature
gauge • Visual Gauge less than 3/4 when
driving —
• Coolant overflow to res- ervoir tank • Visual No overflow during driving
and idling CO-11, " Inspection "
OFF*
4
10 • Coolant return from res-
ervoir tank to radiator • Visual Should be initial level in
reservoir tank CO-25, " Inspection "
OFF 11 • Cylinder head • Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping) EM-82, " Disassembly and
Assembly "
12 • Cylinder block and pis-
tons • Visual No scuffing on cylinder
walls or piston EM-103, " Inspection "

EC-372< COMPONENT DIAGNOSIS >
[HR16DE]
P1225 TP SENSOR
P1225 TP SENSOR
Description INFOID:0000000004780253
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:0000000004780254
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 and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
Is 1st trip DTC detected? YES >> Go to
EC-372, " Diagnosis Procedure " .
NO >> INSPECTION END
Diagnosis Procedure INFOID:00000000047802551.
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
P1225 Closed throttle position
learning performance Closed throttle position learning value is excessively
low. • Electric throttle control actuator
(TP sensor 1 and 2)

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)

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

EC
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P2118 THROTTLE CONTROL MOTOR
Description INFOID:0000000004780309
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. ECM controls the throttle valve opening angle in response to driving conditions via the throt-
tle control motor.
DTC Logic INFOID:0000000004780310
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE YES >> Go to
EC-394, " Diagnosis Procedure " .
NO >> INSPECTION END DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2118 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)

EC
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P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
Description INFOID:0000000004780314
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 throttle position sensor detects the throttle valv e position, and feeds the voltage signal to the ECM. The
ECM judges the current opening angle of the throttle valve and controls the throttle valve opening angle in
response to driving conditions via the throttle control motor.
DTC Logic INFOID:0000000004780315
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE YES >> Go to
EC-397, " Diagnosis Procedure " .
NO >> GO TO 3. YES >> Go to
EC-397, " Diagnosis Procedure " .
NO >> INSPECTION END
Diagnosis Procedure INFOID:0000000004780316

EC
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P2122, P2123 APP SENSOR
Description INFOID:0000000004780318
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 potentiometer which transform the accelerator pedal
position into output voltage, and emit the voltage signal 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 accelerato r pedal is determined by the ECM
receiving the signal from the acce lerator pedal position sensor. The
ECM uses this signal for the engine operation such as fuel cut.
DTC Logic INFOID:0000000004780319
DTC DETECTION LOGIC NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-358, " DTC Logic " .
DTC CONFIRMATION PROCEDURE YES >> Go to
EC-400, " Diagnosis Procedure " .
NO >> INSPECTION END