2005 INFINITI FX35 Service Manual

auxiliary battery octane warning light change wheel lock mirror

Page 2313 of 4731

INFINITI FX35 2005 Service Manual EC-920
[VK45DE]
DTC P0122, P0123 TP SENSOR
Revision: 2005 July 2005 FX
DTC P0122, P0123 TP SENSORPFP:16119
Component DescriptionABS007K7
Electric throttle control actuator consists of throttle control

EC-920
[VK45DE]
DTC P0122, P0123 TP SENSOR
Revision: 2005 July 2005 FX
DTC P0122, P0123 TP SENSORPFP:16119
Component DescriptionABS007K7
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 ModeABS007K8
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 LogicABS007K9
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.
PBIB0145E
MONITOR ITEM CONDITION SPECIFICATION
THRTL SEN 1
THRTL SEN 2*
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 sen-
sor 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.

Page 2314 of 4731

INFINITI FX35 2005 Service Manual DTC P0122, P0123 TP SENSOR EC-921
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
DTC Confirmation ProcedureABS007KA
NOTE:
If DTC Confirmation Procedure has been previous

Page 2315 of 4731

INFINITI FX35 2005 Service Manual EC-922
[VK45DE]
DTC P0122, P0123 TP SENSOR
Revision: 2005 July 2005 FX
Wiring DiagramABS007KB
TBWM0410E

Page 2316 of 4731

INFINITI FX35 2005 Service Manual DTC P0122, P0123 TP SENSOR EC-923
[VK45DE]
C
D E
F
G H
I
J
K L
M A
EC
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground

Page 2317 of 4731

INFINITI FX35 2005 Service Manual EC-924
[VK45DE]
DTC P0122, P0123 TP SENSOR
Revision: 2005 July 2005 FX
2. CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT-I
1. Disconnect electric throttle control actuator harness connector.

Page 2318 of 4731

INFINITI FX35 2005 Service Manual DTC P0122, P0123 TP SENSOR EC-925
[VK45DE]
C
D E
F
G H
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EC
Revision: 2005 July 2005 FX
6. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform

Page 2319 of 4731

INFINITI FX35 2005 Service Manual EC-926
[VK45DE]
DTC P0122, P0123 TP SENSOR
Revision: 2005 July 2005 FX
Component InspectionABS007KD
THROTTLE POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Perform EC-786, "
T

Page 2320 of 4731

INFINITI FX35 2005 Service Manual DTC P0125 ECT SENSOR EC-927
[VK45DE]
C
D E
F
G H
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M A
EC
Revision: 2005 July 2005 FX
DTC P0125 ECT SENSORPFP:22630
Component DescriptionABS007KF
NOTE:
If DTC P0125 is displayed wi

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