2001 NISSAN X-TRAIL diagram

EC-146
[QR25(WITH EURO-OBD)]
DTC P0112, P0113 IAT SENSOR
Wiring Diagram
EBS00M2K
TBWA0056E

DTC P0112, P0113 IAT SENSOR
EC-147
[QR25(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Diagnostic ProcedureEBS00M2L
1.CHECK INTAKE AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect mass air flow sensor (intake air temperature sensor
is built-into) harness connector.
3. Turn ignition switch “ON”.
4. Check voltage between MAF sensor terminal 5 and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair harness or connectors.
2.CHECK INTAKE AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between MAF sensor terminal 3 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair harness or connectors.
3.CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to EC-148, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace mass air flow sensor (with intake air temperature sensor).
4.CHECK INTERMITTENT INCIDENT
Refer to EC-115, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
PBIB0495E
Voltage: Approximately 5V
PBIB0066E
Continuity should exist.

DTC P0117, P0118 ECT SENSOR
EC-151
[QR25(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Wiring DiagramEBS00M2R
TBWA0057E

EC-152
[QR25(WITH EURO-OBD)]
DTC P0117, P0118 ECT SENSOR
Diagnostic Procedure
EBS00M2S
1. CHECK ECT SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect engine coolant temperature (ECT) sensor harness
connector.
3. Turn ignition switch “ON”.
4. Check voltage between ECT sensor terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 2.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
2. CHECK ECT SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between ECT sensor terminal 2 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
3. CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-153, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace engine coolant temperature sensor.
4. CHECK INTERMITTENT INCIDENT
Refer to EC-115, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
PBIB0496E
Voltage: Approximately 5V
PBIB0080E
Continuity should exist.

EC-156
[QR25(WITH EURO-OBD)]
DTC P0122, P0123 TP SENSOR
Wiring Diagram
EBS00M2Z
TBWA0181E

EC-158
[QR25(WITH EURO-OBD)]
DTC P0122, P0123 TP SENSOR
2. CHECK THROTTLE POSITION SENSOR 2 POWER SUPPLY CIRCUIT
1. Disconnect electric throttle control actuator harness connector.
2. Turn ignition switch “ON”.
3. Check voltage between electric throttle control actuator terminal
1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK THROTTLE POSITION SENSOR 2 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Check harness continuity between electric throttle control actuator terminal 5 and engine ground.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
●Harness for open or short between electric throttle control actuator and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK THROTTLE POSITION SENSOR 2 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 74 and electric throttle control actuator terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB0494E
Voltage: Approximately 5V
PBIB0082E
Continuity should exist.
Continuity should exist.

DTC P0127 IAT SENSOR
EC-161
[QR25(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
b. Select “DATA MONITOR” mode with CONSULT-II.
c. Check the engine coolant temperature.
d. If the engine coolant temperature is not less than 90°C (194°F),
turn ignition switch “OFF” and cool down engine.
●Perform the following steps before engine coolant tempera-
ture is above 90°C (194°F).
2. Turn ignition switch “ON”.
3. Select “DATA MONITOR” mode with CONSULT-II.
4. Start engine.
5. Hold vehicle speed at more than 70 km/h (43 MPH) for 100 con-
secutive seconds.
6. If 1st trip DTC is detected, go to EC-161, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “With CONSULT-II” above.
Diagnostic ProcedureEBS00M36
1.CHECK INTAKE AIR TEMPERATURE SENSOR
Refer to EC-161, "
Component Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Replace mass air flow sensor (with intake air temperature sensor).
2.CHECK INTERMITTENT INCIDENT
Refer to EC-115, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
Refer to EC-140, "
Wiring Diagram" .
>>INSPECTION END
Component InspectionEBS00M37
INTAKE AIR TEMPERATURE SENSOR
1. Check resistance between intake air temperature sensor termi-
nals 3 and 5 under the following conditions.
< Reference data >
2. If NG, replace mass air flow sensor (with intake air temperature
sensor).
SEF058Y
SEC266C
Intake air temperature °C (°F) Resistance kΩ
25 (77) 1.9 - 2.1
SEF012P

DTC P0132 HO2S1
EC-165
[QR25(WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
MA
EC
Wiring DiagramEBS00M3E
TBWA0059E