2008 INFINITI FX35 Service Manual

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Page 1433 of 3924

INFINITI FX35 2008 Service Manual
DTC P0117, P0118 ECT SENSOREC-193
< SERVICE INFORMATION > [VQ35DE]
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DTC P0117, P0118 ECT SENSOR
Component DescriptionINFOID:0000000001326013
The engine coolant temperat

Page 1434 of 3924

INFINITI FX35 2008 Service Manual
EC-194
< SERVICE INFORMATION >[VQ35DE]
DTC P0117, P0118 ECT SENSOR
DTC Confirmation Procedure
INFOID:0000000001326015
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn i

Page 1435 of 3924

INFINITI FX35 2008 Service Manual
DTC P0117, P0118 ECT SENSOREC-195
< SERVICE INFORMATION > [VQ35DE]
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Wiring DiagramINFOID:0000000001326016
Diagnosis ProcedureINFOID:0000000001326017
1.CHECK GROUND CONN

Page 1436 of 3924

INFINITI FX35 2008 Service Manual
EC-196
< SERVICE INFORMATION >[VQ35DE]
DTC P0117, P0118 ECT SENSOR
2. Loosen and retighten ground screw on the body. Refer to
EC-144, "Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or rep

Page 1437 of 3924

INFINITI FX35 2008 Service Manual
DTC P0117, P0118 ECT SENSOREC-197
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5.CHECK INTERMITTENT INCIDENT
Refer to EC-139
.
>> INSPECTION END
Component InspectionINFOID:000000

Page 1438 of 3924

INFINITI FX35 2008 Service Manual
EC-198
< SERVICE INFORMATION >[VQ35DE]
DTC P0122, P0123 TP SENSOR
DTC P0122, P0123 TP SENSOR
Component DescriptionINFOID:0000000001326020
Electric throttle control actuator
consists of throttle cont

EC-198
< SERVICE INFORMATION >[VQ35DE]
DTC P0122, P0123 TP SENSOR
DTC P0122, P0123 TP SENSOR
Component DescriptionINFOID:0000000001326020
Electric throttle control actuator
consists of throttle control motor,
throttle position (TP) sensor, et c. 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.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001326021
Specification data are reference values.
*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.
On Board Diagn osis LogicINFOID:0000000001326022
These self-diagnoses have the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation ProcedureINFOID:0000000001326023
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 8V at idle.
1. Start engine and let it idle for 1 second.
2. Check DTC.
3. If DTC is detected, go to EC-200, "
Diagnosis Procedure".
PBIB0145E
MONITOR ITEM CONDITION SPECIFICATION
TP SEN 1-B1
TP SEN 2-B1* Ignition switch: ON
(Engine stopped)
Selector lever: D Accelerator pedal:
Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0122
0122 Throttle position sensor
2 circuit low input An excessively low voltage from the TP sensor
2 is sent to ECM. Harness or connectors
(TP sensor 2 circuit is open or shorted.)
(APP sensor 2 circuit is shorted.)
Electric throttle control actuator (TP sensor 2)
Accelerator pedal position sensor (APP sensor 2)
P0123
0123
Throttle position sensor
2 circuit high input An excessively high voltage from the TP sensor
2 is sent to ECM.
Engine operation 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.
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 1439 of 3924

INFINITI FX35 2008 Service Manual
DTC P0122, P0123 TP SENSOREC-199
< SERVICE INFORMATION > [VQ35DE]
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Wiring DiagramINFOID:0000000001326024
Specification data are reference values
and are measured betwe

Page 1440 of 3924

INFINITI FX35 2008 Service Manual
EC-200
< SERVICE INFORMATION >[VQ35DE]
DTC P0122, P0123 TP SENSOR
Diagnosis Procedure
INFOID:0000000001326025
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground sc

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