2005 NISSAN X-TRAIL Service Repair Manual

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Page 1049 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0102, P0103 MAF SENSOR
EC-645
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EC

PROCEDURE FOR DTC P0102
With CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSU

Page 1050 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-646
[QR (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

Wiring DiagramEBS010Y3
TBWA0598E

Page 1051 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0102, P0103 MAF SENSOR
EC-647
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Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use EC

Page 1052 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-648
[QR (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

3. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten three ground screws on the body.
Refer to EC-632, "
Ground

Page 1053 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0102, P0103 MAF SENSOR
EC-649
[QR (WITHOUT EURO-OBD)]
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4. CHECK MAF SENSOR POWER SUPPLY CIRCUIT
1. Disconnect MAF sensor harness connector.
2. Turn ignition switch ON.

Page 1054 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-650
[QR (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR

7. CHECK MAF SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between MAF sensor terminal 4 and ECM terminal 50.

Page 1055 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P0102, P0103 MAF SENSOR
EC-651
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Without CONSULT-II
1. Reconnect all harness connectors disconnected.
2. Start engine and warm it up to normal op

Page 1056 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-652
[QR (WITHOUT EURO-OBD)]
DTC P0117, P0118 ECT SENSOR

DTC P0117, P0118 ECT SENSORPFP:22630
Component DescriptionEBS010Y7
The engine coolant temperature sensor is used to detect the engine
coola

EC-652
[QR (WITHOUT EURO-OBD)]
DTC P0117, P0118 ECT SENSOR

DTC P0117, P0118 ECT SENSORPFP:22630
Component DescriptionEBS010Y7
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.

*: This data is reference value and is measured between ECM terminal 72 (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 LogicEBS010Y8
FAIL-SAFE MODE
When this malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
SEF594K
Engine coolant
temperature°C (°F)Voltage* V Resistance kΩ
−10 (14) 4.4 7.0 - 11.4
20 (68) 3.5 2.1 - 2.9
50 (122) 2.2 0.68 - 1.00
90 (194) 0.9 0.236 - 0.260
SEF012P
DTC No. Trouble Diagnosis Name DTC Detecting Condition Possible Cause
P0117
0117Engine coolant temperature
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 temperature
sensor circuit high inputAn excessively high voltage from the sensor
is sent to ECM.
Detected items Engine operating condition in fail-safe mode
Engine coolant temper-
ature sensor circuitEngine coolant temperature will be determined by ECM based on the time after turning ignition switch ON
or START. CONSULT-II displays the engine coolant temperature decided by ECM.
ConditionEngine coolant temperature decided
(CONSULT-II display)
Just as ignition switch is turned ON or START 40°C (104°F)
More than approx. 4 minutes after ignition ON or
START80°C (176°F)
Except as shown above40 - 80°C (104 - 176°F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling fan operates
while engine is running.

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