2008 INFINITI FX35 Service Manual

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Page 1761 of 3924

INFINITI FX35 2008 Service Manual
DTC P2135 TP SENSOREC-521
< SERVICE INFORMATION > [VQ35DE]
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1. Disconnect electric throttle c
ontrol actuator harness connector.
2. Turn ignition switch ON.
3. Check vo

Page 1762 of 3924

INFINITI FX35 2008 Service Manual
EC-522
< SERVICE INFORMATION >[VQ35DE]
DTC P2135 TP SENSOR
>>
INSPECTION END
7.CHECK THROTTLE POSITION SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness

Page 1763 of 3924

INFINITI FX35 2008 Service Manual
DTC P2135 TP SENSOREC-523
< SERVICE INFORMATION > [VQ35DE]
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5. Check voltage between ECM terminals 50 (TP sensor 1signal),
69 (TP sensor 2signal) and ground under the f

Page 1764 of 3924

INFINITI FX35 2008 Service Manual
EC-524
< SERVICE INFORMATION >[VQ35DE]
DTC P2138 APP SENSOR
DTC P2138 APP SENSOR
Component DescriptionINFOID:0000000001326411
The accelerator pedal position (APP) sensor is installed on the upper
end

EC-524
< SERVICE INFORMATION >[VQ35DE]
DTC P2138 APP SENSOR
DTC P2138 APP SENSOR
Component DescriptionINFOID:0000000001326411
The accelerator pedal position (APP) sensor is installed on the upper
end of the accelerator pedal assembly. The sensor detects the
accelerator 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:0000000001326412
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:0000000001326413
This self-diagnosis has the one trip detection logic.
NOTE:
If DTC P2138 is displayed with DTC P0643, firs t perform the trouble diagnosis for DTC P0643.
Refer to EC-424
.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
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
P2138
2138 Accelerator pedal posi-
tion sensor circuit range/
performance Rationally incorrect voltage is sent to ECM
compared with the sign
als from APP sensor 1
and APP sensor 2. Harness or connector
(APP sensor 1 and 2 circuit is open or
shorted.)
(TP sensor circuit is shorted.)
Accelerator pedal position sensor (APP sensor 1 and 2)
Electric throttle control actuator (TP sensor 1 and 2)
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.
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3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 1765 of 3924

INFINITI FX35 2008 Service Manual
DTC P2138 APP SENSOREC-525
< SERVICE INFORMATION > [VQ35DE]
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DTC Confirmation ProcedureINFOID:0000000001326414
NOTE:
If DTC Confirmation Procedure has been previously c

Page 1766 of 3924

INFINITI FX35 2008 Service Manual
EC-526
< SERVICE INFORMATION >[VQ35DE]
DTC P2138 APP SENSOR
Wiring Diagram
INFOID:0000000001326415
Specification data are reference values and are measured between each terminal and ground.
CAUTION:

Page 1767 of 3924

INFINITI FX35 2008 Service Manual
DTC P2138 APP SENSOREC-527
< SERVICE INFORMATION > [VQ35DE]
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Diagnosis ProcedureINFOID:0000000001326416
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loose

Page 1768 of 3924

INFINITI FX35 2008 Service Manual
EC-528
< SERVICE INFORMATION >[VQ35DE]
DTC P2138 APP SENSOR
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor te

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