2007 INFINITI M35 Factory Service Manual

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Page 2145 of 4647

INFINITI M35 2007 Factory Service Manual EC-616
[VQ35DE]
DTC P2119 ELECTRIC THROTTLE CONTROL ACTUATOR
Revision: 2007 April2007 M35/M45
PROCEDURE FOR MALFUNCTION C
With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Sel

Page 2146 of 4647

INFINITI M35 2007 Factory Service Manual DTC P2122, P2123 APP SENSOR
EC-617
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Revision: 2007 April2007 M35/M45
DTC P2122, P2123 APP SENSORPFP:18002
Component DescriptionNBS0056L
The accelerator pedal position

DTC P2122, P2123 APP SENSOR
EC-617
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DTC P2122, P2123 APP SENSORPFP:18002
Component DescriptionNBS0056L
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 ModeNBS0056M
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 LogicNBS0056N
These self-diagnoses have the one trip detection logic.
NOTE:
If DTC P2122 or P2123 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-486, "
DTC P0643 SENSOR POWER SUPPLY" .
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
ACCEL SEN 2*
Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.4 - 1.1V
Accelerator pedal: Fully depressed 3.7 - 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
P2122
2122Accelerator pedal posi-
tion sensor 1 circuit low
inputAn excessively low voltage from the APP sen-
sor 1 is sent to ECM.
Harness or connectors
(APP sensor 1 circuit is open or
shorted.)
Accelerator pedal position sensor
(APP sensor 1) P2123
2123Accelerator pedal posi-
tion sensor 1 circuit high
inputAn excessively high voltage from the APP sen-
sor 1 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.

Page 2147 of 4647

INFINITI M35 2007 Factory Service Manual EC-618
[VQ35DE]
DTC P2122, P2123 APP SENSOR
Revision: 2007 April2007 M35/M45
DTC Confirmation ProcedureNBS0056O
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition

Page 2148 of 4647

INFINITI M35 2007 Factory Service Manual DTC P2122, P2123 APP SENSOR
EC-619
[VQ35DE]
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Revision: 2007 April2007 M35/M45
Wiring DiagramNBS0056P
TBWT0987E

Page 2149 of 4647

INFINITI M35 2007 Factory Service Manual EC-620
[VQ35DE]
DTC P2122, P2123 APP SENSOR
Revision: 2007 April2007 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground t

Page 2150 of 4647

INFINITI M35 2007 Factory Service Manual DTC P2122, P2123 APP SENSOR
EC-621
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Revision: 2007 April2007 M35/M45
2. CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor

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INFINITI M35 2007 Factory Service Manual EC-622
[VQ35DE]
DTC P2122, P2123 APP SENSOR
Revision: 2007 April2007 M35/M45
6. CHECK APP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 106 and APP se

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INFINITI M35 2007 Factory Service Manual DTC P2122, P2123 APP SENSOR
EC-623
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4. If NG, replace accelerator pedal assembly and go to next step.
5. Perform EC-86, "
Accelerator

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