NISSAN X-TRAIL 2005 Service Repair Manual

DTC P0112, P0113 IAT SENSOR
EC-1447
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2. CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect mass air flow sensor (intake air temperature sensor
is built-into) harness connector.
2. Turn ignition switch ON.
3. Check voltage between MAF sensor terminal 5 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connectors.
3. CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between MAF sensor terminal 6 and ECM terminal 74. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to EC-1448, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Replace mass air flow sensor (with intake air temperature sensor).
5. CHECK INTERMITTENT INCIDENT
Refer to EC-1414, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
PBIB1891E
Voltage: Approximately 5.3V
PBIB1169E
Continuity should exist.

EC-1448
[YD (WITHOUT EURO-OBD)]
DTC P0112, P0113 IAT SENSOR

Component InspectionEBS011YU
INTAKE AIR TEMPERATURE SENSOR
1. Check resistance between mass air flow sensor terminals 5 and
6 under the following conditions.
2. If NG, replace mass air flow sensor (with intake air temperature
sensor).
Removal and InstallationEBS011YV
MASS AIR FLOW SENSOR
Refer to EM-142, "AIR CLEANER AND AIR DUCT" .
Intake air temperature °C (°F) Resistance kΩ
25 (77) 1.800 - 2.200
PBIB1604E
SEF012P

DTC P0117, P0118 ECT SENSOR
EC-1449
[YD (WITHOUT EURO-OBD)]
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DTC P0117, P0118 ECT SENSORPFP:22630
DescriptionEBS011YW
The engine coolant temperature sensor is used to detect the engine
coolant temperature. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the engine coolant
temperature input. The sensor uses a thermistor which is sensitive to
the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases.

*: These data are reference values and measured between ECM terminal 51 (Engine
coolant temperature sensor) and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
On Board Diagnosis LogicEBS011YX
The MI will not light up for these self-diagnoses.
DTC Confirmation ProcedureEBS011YY
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.
WITH CONSULT-II
1. Turn ignition switch ON.
SEF594K
Engine coolant tempera-
ture °C (°F)Voltage* (V) Resistance (kΩ)
−10 (14) 4.7 7.0 - 11.4
20 (68) 3.8 2.1 - 2.9
50 (122) 2.6 0.68 - 1.00
90 (194) 1.3 0.236 - 0.260
SEF012P
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0117
0117Engine coolant tempera-
ture sensor circuit low
inputAn excessively low voltage from the sensor is
sent to ECM.

Harness or connectors
(The sensor circuit is open or
shorted.)

Engine coolant temperature sensor P0118
0118Engine coolant tempera-
ture sensor circuit high
inputAn excessively high voltage from the sensor is
sent to ECM.

EC-1450
[YD (WITHOUT EURO-OBD)]
DTC P0117, P0118 ECT SENSOR

2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-1452, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go to EC-1452, "
Diagnostic Procedure" .
SEF817Y

DTC P0117, P0118 ECT SENSOR
EC-1451
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Wiring DiagramEBS011YZ
TBWA0566E

EC-1452
[YD (WITHOUT EURO-OBD)]
DTC P0117, P0118 ECT SENSOR

Diagnostic ProcedureEBS011Z0
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-1424, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
PBIB2020E

DTC P0117, P0118 ECT SENSOR
EC-1453
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2. CHECK ECT SENSOR POWER SUPPLY CIRCUIT
1. Disconnect engine coolant temperature sensor harness connec-
tor.
2. Turn ignition switch ON.
3. Check voltage between ECT sensor terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connectors.
3. CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECT sensor terminal 2 and ECM terminal 70. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-1454, "
Component Inspection" .
OK or NG
OK >> GO TO 5.
NG >> Replace engine coolant temperature sensor.
5. CHECK INTERMITTENT INCIDENT
Refer to EC-1414, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
PBIB1892E
Voltage: Approximately 5.3V
PBIB0152E
Continuity should exist.

EC-1454
[YD (WITHOUT EURO-OBD)]
DTC P0117, P0118 ECT SENSOR

Component InspectionEBS011Z1
ENGINE COOLANT TEMPERATURE SENSOR
1. Check resistance between engine coolant temperature sensor
terminals 1 and 2 as shown in the figure.

2. If NG, replace engine coolant temperature sensor.
Removal and InstallationEBS011Z2
ENGINE COOLANT TEMPERATURE SENSOR
Refer to EM-209, "CYLINDER HEAD" .
PBIB2005E
Engine coolant temperature °C (°F) Resistance kΩ
20 (68) 2.1 - 2.9
50 (122) 0.68 - 1.00
90 (194) 0.236 - 0.260
SEF012P

DTC P0122, P0123 APP SENSOR
EC-1455
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DTC P0122, P0123 APP SENSORPFP:18002
DescriptionEBS011Z3
The accelerator pedal position sensor is installed on the upper end
of the accelerator pedal assembly. The sensors detect the accelera-
tor pedal position and sends a signal to the ECM. The ECM uses the
signal to determine the amount of fuel to be injected.
CONSULT-II Reference Value in Data Monitor ModeEBS011Z4
Specification data are reference values.
*: These signals are converted by ECM internally. Thus, these differ from ECM terminals voltage.
On Board Diagnosis LogicEBS011Z6
The MI will not light up for these self-diagnoses.
NOTE:

If DTC P0122 or P0123 is displayed with DTC P0642 or P0643, first perform trouble diagnosis for
DTC P0642 or P0643. Refer to EC-1575, "
DTC P0642, P0643 SENSOR POWER SUPPLY" .
DTC Confirmation ProcedureEBS011Z7
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If DTC is detected, go to EC-1459, "
Diagnostic Procedure" .
PBIB1741E
MONITOR ITEM CONDITION SPECIFICATION
ACCEL POS SEN*

Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.2 - 0.7V
Accelerator pedal: Fully depressed 3.9 - 4.9V
ACCEL SEN 2*

Ignition switch: ON
(Engine stopped)Accelerator pedal: Fully released 0.1 - 0.4V
Accelerator pedal: Fully depressed 1.9 - 2.4V
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0122
0122Accelerator pedal position
sensor 1 circuit low inputAn excessively low voltage from the APP sensor
1 is sent to ECM.

Harness or connectors
(The APP sensor 1 circuit is open or
shorted.)

Accelerator pedal position sensor
(Accelerator pedal position sensor 1) P0123
0123Accelerator pedal position
sensor 1 circuit high inputAn excessively high voltage from the APP sensor
1 is sent to ECM.
SEF817Y

EC-1456
[YD (WITHOUT EURO-OBD)]
DTC P0122, P0123 APP SENSOR

WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 5 seconds.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go to EC-1459, "
Diagnostic Procedure" .