2007 INFINITI M35 Factory Service Manual

service reset engine oil capacity low beam wiring fuse keyless

Page 2153 of 4647

INFINITI M35 2007 Factory Service Manual EC-624
[VQ35DE]
DTC P2127, P2128 APP SENSOR
Revision: 2007 April2007 M35/M45
DTC P2127, P2128 APP SENSORPFP:18002
Component DescriptionNBS0056T
The accelerator pedal position sensor is installed on th

EC-624
[VQ35DE]
DTC P2127, P2128 APP SENSOR
Revision: 2007 April2007 M35/M45
DTC P2127, P2128 APP SENSORPFP:18002
Component DescriptionNBS0056T
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 ModeNBS0056U
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 LogicNBS0056V
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.
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
P2127
2127Accelerator pedal posi-
tion sensor 2 circuit low
inputAn excessively low voltage 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
2128Accelerator pedal posi-
tion sensor 2 circuit high
inputAn excessively high voltage 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.

Page 2154 of 4647

INFINITI M35 2007 Factory Service Manual DTC P2127, P2128 APP SENSOR
EC-625
[VQ35DE]
C
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MA
EC
Revision: 2007 April2007 M35/M45
DTC Confirmation ProcedureNBS0056W
NOTE:
If DTC Confirmation Procedure has been previously conduc

Page 2155 of 4647

INFINITI M35 2007 Factory Service Manual EC-626
[VQ35DE]
DTC P2127, P2128 APP SENSOR
Revision: 2007 April2007 M35/M45
Wiring DiagramNBS0056X
TBWT1482E

Page 2156 of 4647

INFINITI M35 2007 Factory Service Manual DTC P2127, P2128 APP SENSOR
EC-627
[VQ35DE]
C
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EC
Revision: 2007 April2007 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTIO

Page 2157 of 4647

INFINITI M35 2007 Factory Service Manual EC-628
[VQ35DE]
DTC P2127, P2128 APP SENSOR
Revision: 2007 April2007 M35/M45
2. CHECK APP SENSOR 2 POWER SUPPLY CIRCUIT-I
1. Disconnect accelerator pedal position (APP) sensor (1) harness
connector.
2

Page 2158 of 4647

INFINITI M35 2007 Factory Service Manual DTC P2127, P2128 APP SENSOR
EC-629
[VQ35DE]
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EC
Revision: 2007 April2007 M35/M45
6. CHECK THROTTLE POSITION SENSOR
Refer to EC-637, "
Component Inspection" .
OK or NG
OK >> GO TO

Page 2159 of 4647

INFINITI M35 2007 Factory Service Manual EC-630
[VQ35DE]
DTC P2127, P2128 APP SENSOR
Revision: 2007 April2007 M35/M45
12. CHECK APP SENSOR
Refer to EC-630, "
Component Inspection" .
OK or NG
OK >> GO TO 14.
NG >> GO TO 13.
13. REPLACE ACCELE

Page 2160 of 4647

INFINITI M35 2007 Factory Service Manual DTC P2135 TP SENSOR
EC-631
[VQ35DE]
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EC
Revision: 2007 April2007 M35/M45
DTC P2135 TP SENSORPFP:16119
Component DescriptionNBS00571
Electric throttle control actuator consists of

DTC P2135 TP SENSOR
EC-631
[VQ35DE]
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EC
Revision: 2007 April2007 M35/M45
DTC P2135 TP SENSORPFP:16119
Component DescriptionNBS00571
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has the two sensors. These sensors are
a kind of potentiometers which transform the throttle valve position
into output voltage, and emit the voltage signal to the ECM. In addi-
tion, these sensors detect the opening and closing speed of the
throttle valve and feed the voltage signals to the ECM. The ECM
judges the current opening angle of the throttle valve from these sig-
nals and the ECM controls the throttle control motor to make the
throttle valve opening angle properly in response to driving condi-
tion.
CONSULT-II Reference Value in Data Monitor ModeNBS00572
Specification data are reference values.
*: Throttle position sensor 2 signal is converted by ECM internally. Thus, it differs from ECM terminal voltage signal.
On Board Diagnosis LogicNBS00573
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
PBIB0145E
MONITOR ITEM CONDITION SPECIFICATION
THRTL SEN 1
THRTL SEN 2*
Ignition switch: ON
(Engine stopped)
Selector lever: DAccelerator pedal: Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P2135
2135Throttle position sensor
circuit range/perfor-
manceRationally incorrect voltage is sent to ECM
compared with the signals from TP sensor 1
and TP sensor 2.
Harness or connector
(TP sensor 1 and 2 circuit is open or
shorted.)
(APP sensor 2 circuit is shorted.)
Electric throttle control actuator
(TP sensor 1 and 2)
Accelerator pedal position sensor
(APP sensor 2)
Engine operation 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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