2008 INFINITI FX35 Service Manual

brake rotor timing belt headlamp compression ratio wiring sensor

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Page 2345 of 3924

INFINITI FX35 2008 Service Manual
DTC P2122, P2123 APP SENSOREC-1105
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DTC Confirmation ProcedureINFOID:0000000001327003
NOTE:
If DTC Confirmation Procedure has been prev

Page 2346 of 3924

INFINITI FX35 2008 Service Manual
EC-1106
< SERVICE INFORMATION >[VK45DE]
DTC P2122, P2123 APP SENSOR
Wiring Diagram
INFOID:0000000001327004
Specification data are reference values and are measured between each terminal and ground.
C

Page 2347 of 3924

INFINITI FX35 2008 Service Manual
DTC P2122, P2123 APP SENSOREC-1107
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Diagnosis ProcedureINFOID:0000000001327005
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.

Page 2348 of 3924

INFINITI FX35 2008 Service Manual
EC-1108
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DTC P2122, P2123 APP SENSOR
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP s

Page 2349 of 3924

INFINITI FX35 2008 Service Manual
DTC P2122, P2123 APP SENSOREC-1109
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OK >> GO TO 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
Harness connector

Page 2350 of 3924

INFINITI FX35 2008 Service Manual
EC-1110
< SERVICE INFORMATION >[VK45DE]
DTC P2127, P2128 APP SENSOR
DTC P2127, P2128 APP SENSOR
Component DescriptionINFOID:0000000001327008
The accelerator pedal position sensor is installed on the

EC-1110
< SERVICE INFORMATION >[VK45DE]
DTC P2127, P2128 APP SENSOR
DTC P2127, P2128 APP SENSOR
Component DescriptionINFOID:0000000001327008
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 accelerato
r 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 ModeINFOID:0000000001327009
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 LogicINFOID:0000000001327010
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:0000000001327011
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.
PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SEN 1 Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.5 - 1.0V
Accelerator pedal: Fully depressed 4.0 - 4.8V
ACCEL SEN 2* Ignition switch: ON
(Engine stopped) Accelerator pedal: Fully released 0.3 - 1.2V
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
P2127
2127 Accelerator pedal posi-
tion sensor 2 circuit low
input An excessively low vo
ltage from the APP sen-
sor 2 is sent to ECM. Harness or connectors
(APP sensor 2 circuit is open or shorted.)
(TP sensor circuit is shorted.)
Accelerator pedal position sensor (APP sensor 2)
Electric throttle control actuator (TP sensor 1 and 2)
P2128
2128
Accelerator pedal posi-
tion sensor 2 circuit high
input An excessively high vo
ltage from the APP sen-
sor 2 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.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 2351 of 3924

INFINITI FX35 2008 Service Manual
DTC P2127, P2128 APP SENSOREC-1111
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TESTING CONDITION:
Before performing the following procedure, confirm
that battery voltage is more

Page 2352 of 3924

INFINITI FX35 2008 Service Manual
EC-1112
< SERVICE INFORMATION >[VK45DE]
DTC P2127, P2128 APP SENSOR
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals

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