2006 INFINITI QX56 Factory Service Manual

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Page 1769 of 3383

INFINITI QX56 2006 Factory Service Manual EC-558Revision: November 2009
DTC P2127, P2128 APP SENSOR
2006 QX56
6. REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-78, "
Throttle Valve

Page 1770 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P2127, P2128 APP SENSOREC-559
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EC
Revision: November 2009 2006 QX56
Component InspectionUBS00HCI
ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconn

Page 1771 of 3383

INFINITI QX56 2006 Factory Service Manual EC-560Revision: November 2009
DTC P2135 TP SENSOR
2006 QX56
DTC P2135 TP SENSORPFP:16119
Component DescriptionUBS00HCK
Electric throttle control actuator consists of throttle control motor,
throttle p

EC-560Revision: November 2009
DTC P2135 TP SENSOR
2006 QX56
DTC P2135 TP SENSORPFP:16119
Component DescriptionUBS00HCK
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 ModeUBS00HCL
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 LogicUBS00HCM
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MIL lights up.
PBIB0145E
MONITOR ITEMCONDITION SPECIFICATION
THRTL SEN 1
THRTL SEN 2*
Ignition switch: ON
(Engine stopped)
Selector lever: D Accelerator pedal: Fully released More than 0.36V
Accelerator pedal: Fully depressed Less than 4.75V
DTC No. Trouble diagnosis name
DTC detecting conditionPossible cause
P2135
2135 Throttle position sensor
circuit range/performance Rationally 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.

Page 1772 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P2135 TP SENSOREC-561
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Revision: November 2009 2006 QX56
DTC Confirmation ProcedureUBS00HCN
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn

Page 1773 of 3383

INFINITI QX56 2006 Factory Service Manual EC-562Revision: November 2009
DTC P2135 TP SENSOR
2006 QX56
Wiring DiagramUBS00HCO
BBWA2093E

Page 1774 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P2135 TP SENSOREC-563
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Revision: November 2009 2006 QX56
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM

Page 1775 of 3383

INFINITI QX56 2006 Factory Service Manual EC-564Revision: November 2009
DTC P2135 TP SENSOR
2006 QX56
2. CHECK THROTTLE POSITION SENSOR POWER SUPPLY CIRCUIT-I
1. Disconnect electric throttle control actuator harness connector.
2. Turn ignitio

Page 1776 of 3383

INFINITI QX56 2006 Factory Service Manual DTC P2135 TP SENSOREC-565
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Revision: November 2009 2006 QX56
6. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace the accelerator pedal assembly.
2. Perform EC-78, "
Accelerator

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