2001 NISSAN X-TRAIL Service Repair Manual

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Page 497 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P0112, P0113 IAT SENSOR
EC-147
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Diagnostic ProcedureEBS00M2L
1.CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “OF

Page 498 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-148
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DTC P0112, P0113 IAT SENSOR
Component Inspection
EBS00M2M
INTAKE AIR TEMPERATURE SENSOR
1. Check resistance between intake air temperature sensor termi-
nals 3 and

Page 499 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P0117, P0118 ECT SENSOR
EC-149
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DTC P0117, P0118 ECT SENSORPFP:22630
Component DescriptionEBS00M2O
The engine coolant temperature sensor is used to d

Page 500 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-150
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DTC P0117, P0118 ECT SENSOR
DTC Confirmation Procedure
EBS00M2Q
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF

Page 501 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P0117, P0118 ECT SENSOR
EC-151
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Wiring DiagramEBS00M2R
TBWA0057E

Page 502 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-152
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DTC P0117, P0118 ECT SENSOR
Diagnostic Procedure
EBS00M2S
1. CHECK ECT SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect engine coolant tempe

Page 503 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual DTC P0117, P0118 ECT SENSOR
EC-153
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Component InspectionEBS00M2T
ENGINE COOLANT TEMPERATURE SENSOR
1. Check resistance between engine coolant temper

Page 504 of 3833

NISSAN X-TRAIL 2001 Service Repair Manual EC-154
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DTC P0122, P0123 TP SENSOR
DTC P0122, P0123 TP SENSOR
PFP:16119
Component DescriptionEBS00M2V
Electric Throttle Control Actuator consists of throttle control motor,

EC-154
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DTC P0122, P0123 TP SENSOR
DTC P0122, P0123 TP SENSOR
PFP:16119
Component DescriptionEBS00M2V
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 ModeEBS00M2W
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 LogicEBS00M2X
These self-diagnoses have the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureEBS00M2Y
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch “OFF” and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch “ON”.
PBIB0145E
MONITOR ITEM CONDITION SPECIFICATION
THRTL SEN1
THRTL SEN2*
●Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released More than 0.36V
●Shift lever:
D (A/T model)
1st (M/T model)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
(The TP sensor 2 circuit is open or
shorted.)
●Electric throttle control actuator
(TP 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.

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