2005 INFINITI QX4 Factory Service Manual

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Page 1449 of 3419

INFINITI QX4 2005 Factory Service Manual EC-258Revision: October 2005
DTC P0181 FTT SENSOR
2005 QX56
Component InspectionUBS00H39
FUEL TANK TEMPERATURE SENSOR
1. Remove fuel level sensor unit.
2. Check resistance between “fuel level sensor

Page 1450 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0182, P0183 FTT SENSOR
EC-259
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Revision: October 20052005 QX56
DTC P0182, P0183 FTT SENSORPFP:22630
Component DescriptionUBS00H3B
The fuel tank temperature sensor is used

Page 1451 of 3419

INFINITI QX4 2005 Factory Service Manual EC-260Revision: October 2005
DTC P0182, P0183 FTT SENSOR
2005 QX56
Wiring DiagramUBS00H3E
BBWA1682E

Page 1452 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0182, P0183 FTT SENSOR
EC-261
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Revision: October 20052005 QX56
Diagnostic ProcedureUBS00H3F
1. CHECK COMBINATION METER FUNCTION
Refer to DI-5, "
COMBINATION METERS" .
OK

Page 1453 of 3419

INFINITI QX4 2005 Factory Service Manual EC-262Revision: October 2005
DTC P0182, P0183 FTT SENSOR
2005 QX56
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors C1, E41
Harness for open or short between ECM and “fuel lev

Page 1454 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0182, P0183 FTT SENSOR
EC-263
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Revision: October 20052005 QX56
Component InspectionUBS00H3G
FUEL TANK TEMPERATURE SENSOR
1. Remove fuel level sensor unit.
2. Check resist

Page 1455 of 3419

INFINITI QX4 2005 Factory Service Manual EC-264Revision: October 2005
DTC P0222, P0223 TP SENSOR
2005 QX56
DTC P0222, P0223 TP SENSORPFP:16119
Component DescriptionUBS00H3I
Electric throttle control actuator consists of throttle control moto

EC-264Revision: October 2005
DTC P0222, P0223 TP SENSOR
2005 QX56
DTC P0222, P0223 TP SENSORPFP:16119
Component DescriptionUBS00H3I
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 the 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 addi-
tion, 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 sig-
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
tion.
CONSULT-II Reference Value in Data Monitor ModeUBS00H3J
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 Diagnosis LogicUBS00H3K
These self-diagnoses have the one trip detection logic.
FAIL -S AFE M OD E
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
PBIB0145E
MONITOR ITEM CONDITION SPECIFICATION
THRTL SEN 1
THRTL SEN 2*
Ignition switch: ON
(Engine stopped)
Selector lever: DAccelerator 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
P0222
0222Throttle position sensor
1 circuit low inputAn excessively low voltage from the TP sensor
1 is sent to ECM.
Harness or connectors
(TP sensor 1 circuit is open or shorted.)
(APP sensor 2 circuit is shorted.)
Electric throttle control actuator
(TP sensor 1)
Accelerator pedal position sensor P0223
0223Throttle position sensor
1 circuit high inputAn excessively high voltage from the TP sen-
sor 1 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.

Page 1456 of 3419

INFINITI QX4 2005 Factory Service Manual DTC P0222, P0223 TP SENSOR
EC-265
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Revision: October 20052005 QX56
DTC Confirmation ProcedureUBS00H3L
NOTE:
If DTC Confirmation Procedure has been previously conducted, always

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