2005 INFINITI FX35 Service Manual

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Page 2713 of 4731

INFINITI FX35 2005 Service Manual EC-1320
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DTC P2135 TP SENSOR
Revision: 2005 July 2005 FX
2. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-I
1. Disconnect electric throttle control actuator harness connector.
2. Turn

Page 2714 of 4731

INFINITI FX35 2005 Service Manual DTC P2135 TP SENSOR EC-1321
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Revision: 2005 July 2005 FX
6. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-

Page 2715 of 4731

INFINITI FX35 2005 Service Manual EC-1322
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DTC P2135 TP SENSOR
Revision: 2005 July 2005 FX
Component InspectionABS007WA
THROTTLE POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Perform EC-786, "
Throttl

Page 2716 of 4731

INFINITI FX35 2005 Service Manual DTC P2138 APP SENSOR EC-1323
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Revision: 2005 July 2005 FX
DTC P2138 APP SENSORPFP:18002
Component DescriptionABS007WC
The accelerator pedal position sen

DTC P2138 APP SENSOR EC-1323
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Revision: 2005 July 2005 FX
DTC P2138 APP SENSORPFP:18002
Component DescriptionABS007WC
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 ModeABS007WD
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 LogicABS007WE
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-1229
.
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
problem Rationally 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
(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.

Page 2717 of 4731

INFINITI FX35 2005 Service Manual EC-1324
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DTC P2138 APP SENSOR
Revision: 2005 July 2005 FX
DTC Confirmation ProcedureABS007WF
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF

Page 2718 of 4731

INFINITI FX35 2005 Service Manual DTC P2138 APP SENSOR EC-1325
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Revision: 2005 July 2005 FX
Wiring DiagramABS007WG
TBWM0509E

Page 2719 of 4731

INFINITI FX35 2005 Service Manual EC-1326
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DTC P2138 APP SENSOR
Revision: 2005 July 2005 FX
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals

Page 2720 of 4731

INFINITI FX35 2005 Service Manual DTC P2138 APP SENSOR EC-1327
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Revision: 2005 July 2005 FX
2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sen

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