2003 NISSAN X-TRAIL Service Repair Manual

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Page 977 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0117, P0118 ECT SENSOR
EC-599
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Wiring DiagramEBS010YA
TBWA0600E

Page 978 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-600
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DTC P0117, P0118 ECT SENSOR

Diagnostic ProcedureEBS010YB
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground three screws on the bo

Page 979 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0117, P0118 ECT SENSOR
EC-601
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2. CHECK ECT SENSOR POWER SUPPLY CIRCUIT
1. Disconnect engine coolant temperature (ECT) sensor harness
connector.

Page 980 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-602
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DTC P0117, P0118 ECT SENSOR

Component InspectionEBS010YC
ENGINE COOLANT TEMPERATURE SENSOR
1. Check resistance between engine coolant temperature sensor
terminals 1 an

Page 981 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0122, P0123 TP SENSOR
EC-603
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DTC P0122, P0123 TP SENSORPFP:16119
Component DescriptionEBS010YE
Electric throttle control actuator consists of t

DTC P0122, P0123 TP SENSOR
EC-603
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DTC P0122, P0123 TP SENSORPFP:16119
Component DescriptionEBS010YE
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 ModeEBS010YF
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 LogicEBS010YG
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 ProcedureEBS010YH
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.
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), 1st (M/T) 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 P0123
0123Throttle position sensor 2
circuit high inputAn excessively high voltage from the TP sensor 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 982 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-604
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DTC P0122, P0123 TP SENSOR

WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second

Page 983 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual DTC P0122, P0123 TP SENSOR
EC-605
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Wiring DiagramEBS010YI
TBWB0260E

Page 984 of 4179

NISSAN X-TRAIL 2003 Service Repair Manual EC-606
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DTC P0122, P0123 TP SENSOR

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when mea

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