2007 INFINITI M35 Factory Service Manual

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Page 1745 of 4647

INFINITI M35 2007 Factory Service Manual EC-216
[VQ35DE]
DTC P0117, P0118 ECT SENSOR
Revision: 2007 April2007 M35/M45
Wiring DiagramNBS004VF
TBWT0952E

Page 1746 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0117, P0118 ECT SENSOR
EC-217
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Revision: 2007 April2007 M35/M45
Diagnostic ProcedureNBS004VG
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen a

Page 1747 of 4647

INFINITI M35 2007 Factory Service Manual EC-218
[VQ35DE]
DTC P0117, P0118 ECT SENSOR
Revision: 2007 April2007 M35/M45
3. CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3.

Page 1748 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0122, P0123 TP SENSOR
EC-219
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Revision: 2007 April2007 M35/M45
DTC P0122, P0123 TP SENSORPFP:16119
Component DescriptionNBS004VJ
Electric throttle control actuat

DTC P0122, P0123 TP SENSOR
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Revision: 2007 April2007 M35/M45
DTC P0122, P0123 TP SENSORPFP:16119
Component DescriptionNBS004VJ
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 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 addition,
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 signals and the
ECM controls the throttle control motor to make the throttle valve
opening angle properly in response to driving condition.
CONSULT-II Reference Value in Data Monitor ModeNBS004VK
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 LogicNBS004VL
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.
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
P0122
0122Throttle position sensor
2 circuit low inputAn excessively low voltage from the TP sensor
2 is sent to ECM.
Harness or connectors
(TP sensor 2 circuit is open or shorted.)
(APP sensor 2 circuit is shorted.)
Electric throttle control actuator
(TP sensor 2)
Accelerator pedal position sensor
(APP sensor 2) P0123
0123Throttle position sensor
2 circuit high inputAn excessively high voltage from the TP sen-
sor 2 is sent to ECM.
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 1749 of 4647

INFINITI M35 2007 Factory Service Manual EC-220
[VQ35DE]
DTC P0122, P0123 TP SENSOR
Revision: 2007 April2007 M35/M45
DTC Confirmation ProcedureNBS004VM
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition s

Page 1750 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0122, P0123 TP SENSOR
EC-221
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Revision: 2007 April2007 M35/M45
Wiring DiagramNBS004VN
TBWT1472E

Page 1751 of 4647

INFINITI M35 2007 Factory Service Manual EC-222
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DTC P0122, P0123 TP 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 te

Page 1752 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0122, P0123 TP SENSOR
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Revision: 2007 April2007 M35/M45
2. CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT-I
1. Disconnect electric throttle control

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