2004 INFINITI FX35 Service Manual

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Page 2585 of 4449

INFINITI FX35 2004 Service Manual EC-1244
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DTC P2135 TP SENSOR
Revision: 2004 November 2004 FX35/FX45
6. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-698, "
Accelerator Pedal Released

Page 2586 of 4449

INFINITI FX35 2004 Service Manual DTC P2135 TP SENSOR
EC-1245
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Revision: 2004 November 2004 FX35/FX45
Component InspectionABS00CE3
THROTTLE POSITION SENSOR
1. Reconnect all harness connectors disconne

Page 2587 of 4449

INFINITI FX35 2004 Service Manual EC-1246
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DTC P2138 APP SENSOR
Revision: 2004 November 2004 FX35/FX45
DTC P2138 APP SENSORPFP:18002
Component DescriptionABS00CE5
The accelerator pedal position sensor is installed on the upper

EC-1246
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DTC P2138 APP SENSOR
Revision: 2004 November 2004 FX35/FX45
DTC P2138 APP SENSORPFP:18002
Component DescriptionABS00CE5
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 accelerator pedal is determined by the ECM
receiving the signal from the accelerator pedal position sensor. The ECM uses this signal for the engine oper-
ation such as fuel cut.
CONSULT-II Reference Value in Data Monitor ModeABS00CE6
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 Diagnosis LogicABS00CE7
This self-diagnosis has the one trip detection logic.
NOTE:
If DTC P2138 is displayed with DTC P1229, first perform the trouble diagnosis for DTC P1229. Refer to
EC-1156
.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL SEN1
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.5 - 1.0V
Accelerator pedal: Fully depressed 4.0 - 4.7V
ACCEL SEN2*
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
2138Accelerator pedal posi-
tion sensor circuit
range/performance
problemRationally incorrect voltage is sent to ECM
compared with the signals 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 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.

Page 2588 of 4449

INFINITI FX35 2004 Service Manual DTC P2138 APP SENSOR
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Revision: 2004 November 2004 FX35/FX45
DTC Confirmation ProcedureABS00CE8
NOTE:
If DTC Confirmation Procedure has been previously conduc

Page 2589 of 4449

INFINITI FX35 2004 Service Manual EC-1248
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DTC P2138 APP SENSOR
Revision: 2004 November 2004 FX35/FX45
Wiring DiagramABS00CE9
TBWM0509E

Page 2590 of 4449

INFINITI FX35 2004 Service Manual DTC P2138 APP SENSOR
EC-1249
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Revision: 2004 November 2004 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTIO

Page 2591 of 4449

INFINITI FX35 2004 Service Manual EC-1250
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DTC P2138 APP SENSOR
Revision: 2004 November 2004 FX35/FX45
2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn

Page 2592 of 4449

INFINITI FX35 2004 Service Manual DTC P2138 APP SENSOR
EC-1251
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Revision: 2004 November 2004 FX35/FX45
5. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harn

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