2003 NISSAN X-TRAIL Electronic Repair Manual

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Page 1577 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P0102, P0103 MAF SENSOR
EC-463
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DTC P0102, P0103 MAF SENSORPFP:22680
Component DescriptionEBS00BG1
The mass air flow sensor is placed in the stream

Page 1578 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-464
[QR (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR
On Board Diagnosis Logic
EBS00BG4
FAIL -S AFE M OD E
When the malfunction is detected, the ECM enters fail-safe mode and the MI lights up.
DT

Page 1579 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P0102, P0103 MAF SENSOR
EC-465
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2. Select “DATA MONITOR” mode with CONSULT-II.
3. Wait at least 5 seconds.
4. If 1st trip DTC is detected, go t

Page 1580 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-466
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DTC P0102, P0103 MAF SENSOR
Wiring Diagram
EBS00BG6
TBWA0055E

Page 1581 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P0102, P0103 MAF SENSOR
EC-467
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Diagnostic ProcedureEBS00BG7
1.INSPECTION START
Which malfunction (P0102 or P0103) is duplicated?
P0102 or P0103
P0

Page 1582 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-468
[QR (WITHOUT EURO-OBD)]
DTC P0102, P0103 MAF SENSOR
4.CHECK MAF SENSOR POWER SUPPLY CIRCUIT
1. Disconnect MAF sensor harness connector.
2. Turn ignition switch “ON”.
3. Check voltage betwee

Page 1583 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual DTC P0102, P0103 MAF SENSOR
EC-469
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8.CHECK MASS AIR FLOW SENSOR
Refer toEC-469, "
Component Inspection".
OK or NG
OK >> GO TO 9.
NG >> Replace mass ai

Page 1584 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EC-470
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DTC P0117, P0118 ECT SENSOR
DTC P0117, P0118 ECT SENSOR
PFP:22630
Component DescriptionEBS00BGA
The engine coolant temperature sensor is used to detect the engine
coolan

EC-470
[QR (WITHOUT EURO-OBD)]
DTC P0117, P0118 ECT SENSOR
DTC P0117, P0118 ECT SENSOR
PFP:22630
Component DescriptionEBS00BGA
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 are measured between ECM terminal 93
(Engine coolant temperature sensor) and body 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 LogicEBS00BGB
FAIL -S AFE M OD E
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 kW
-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
NameDTC Detecting Condition Possible Cause
P0117
0117Engine coolant
temperature sen-
sor circuit low inputAn excessively low voltage from the sensor is
sent to ECM.
lHarness or connectors
(The sensor circuit is open or shorted.)
lEngine coolant temperature sensor
P0118
0118Engine coolant
temperature sen-
sor circuit low inputAn excessively low 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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