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![NISSAN X-TRAIL 2003 Service Repair Manual MAIN POWER SUPPLY AND GROUND CIRCUIT
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Ground InspectionEBS011T6
Ground connections are very important to the proper operation of electrical and e NISSAN X-TRAIL 2003 Service Repair Manual MAIN POWER SUPPLY AND GROUND CIRCUIT
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Ground InspectionEBS011T6
Ground connections are very important to the proper operation of electrical and e](/manual-img/5/57404/w960_57404-1320.png)
MAIN POWER SUPPLY AND GROUND CIRCUIT
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Ground InspectionEBS011T6
Ground connections are very important to the proper operation of electrical and electronic circuits. Ground
connections are often exposed to moisture, dirt and other corrosive elements. The corrosion (rust) can
become an unwanted resistance. This unwanted resistance can change the way a circuit works.
Electronically controlled circuits are very sensitive to proper grounding. A loose or corroded ground can drasti-
cally affect an electronically controlled circuit. A poor or corroded ground can easily affect the circuit. Even
when the ground connection looks clean, there can be a thin film of rust on the surface.
When inspecting a ground connection follow these rules:
Remove the ground bolt or screw.
Inspect all mating surfaces for tarnish, dirt, rust, etc.
Clean as required to assure good contact.
Reinstall bolt or screw securely.
Inspect for “add-on” accessories which may be interfering with the ground circuit.
If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the
wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one
eyelet make sure no ground wires have excess wire insulation.
For detailed ground distribution information, refer to “Ground Distribution” in PG section.
PBIB1870E
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![NISSAN X-TRAIL 2003 Service Repair Manual EC-944
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DTC U1000 CAN COMMUNICATION LINE
DTC U1000 CAN COMMUNICATION LINEPFP:23710
DescriptionEBS0117P
CAN (Controller Area Network) is a serial communication line for real time NISSAN X-TRAIL 2003 Service Repair Manual EC-944
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DTC U1000 CAN COMMUNICATION LINE
DTC U1000 CAN COMMUNICATION LINEPFP:23710
DescriptionEBS0117P
CAN (Controller Area Network) is a serial communication line for real time](/manual-img/5/57404/w960_57404-1321.png)
EC-944
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DTC U1000 CAN COMMUNICATION LINE
DTC U1000 CAN COMMUNICATION LINEPFP:23710
DescriptionEBS0117P
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
On Board Diagnosis LogicEBS0117Q
This self-diagnosis has the one trip detection logic.
The MI will not light up for this self-diagnosis.
DTC Confirmation ProcedureEBS0117R
1. Turn ignition switch ON and wait at least 3 seconds.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. If DTC is detected, go to EC-946, "
Diagnostic Procedure" .
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
U1000CAN communication
line
ECM can not communicate to other control
unit.
ECM can not communicate for more than the
specified time.
Harness or connectors
(CAN communication line is open or
shorted)
Page 1323 of 4179
DTC U1000 CAN COMMUNICATION LINE
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Wiring DiagramEBS0117S
TBWA0564E
Page 1324 of 4179
EC-946
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DTC U1000 CAN COMMUNICATION LINE
Diagnostic ProcedureEBS016ZI
Go to LAN-4, "CAN Communication Unit" .
Page 1325 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual DTC P0016 CKP - CMP CORRELATION
EC-947
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DTC P0016 CKP - CMP CORRELATIONPFP:10328
On Board Diagnosis LogicEBS0117U
DTC Confirmation ProcedureEBS0117V
NOT NISSAN X-TRAIL 2003 Service Repair Manual DTC P0016 CKP - CMP CORRELATION
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DTC P0016 CKP - CMP CORRELATIONPFP:10328
On Board Diagnosis LogicEBS0117U
DTC Confirmation ProcedureEBS0117V
NOT](/manual-img/5/57404/w960_57404-1324.png)
DTC P0016 CKP - CMP CORRELATION
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DTC P0016 CKP - CMP CORRELATIONPFP:10328
On Board Diagnosis LogicEBS0117U
DTC Confirmation ProcedureEBS0117V
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. Start engine and let it idle for at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-947, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureEBS0117W
1. CHECK CAMSHAFT POSITION SENSOR
Refer to EC-1061, "
Component Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Replace camshaft position sensor.
2. CHECK SPROCKET
Visually check for chipping signal plate gear tooth.
OK or NG
OK >> GO TO 3.
NG >> Remove debris and clean the signal plate or replace sprocket.
3. CHECK CRANKSHAFT POSITION SENSOR
Refer to EC-1049, "
Component Inspection" .
OK or NG
OK >> GO TO 4.
NG >> Replace crankshaft position sensor.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P0016Crankshaft position -
camshaft position cor-
relationThe correlation between crankshaft position sen-
sor signal and camshaft position sensor signal is
out of the normal range.
Camshaft position sensor
Crankshaft position sensor
Timing chain
Signal plate
SEF817Y
Page 1326 of 4179
EC-948
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DTC P0016 CKP - CMP CORRELATION
4. CHECK GEAR TOOTH
Visually check for chipping signal plate gear tooth.
OK or NG
OK >> GO TO 5.
NG >> Replace the signal plate.
5. CHECK TIMING CHAIN
Refer to EM-180, "
SECONDARY TIMING CHAIN" , EM-185, "PRIMARY TIMING CHAIN" and EM-153, "VA C -
UUM PUMP" .
OK or NG
OK >> GO TO 6.
NG >> Replace timing chain.
6. CHECK INTERMITTENT INCIDENT
Refer to EC-936, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Page 1327 of 4179
![NISSAN X-TRAIL 2003 Service Repair Manual DTC P0045 TC BOOST CONTROL SOLENOID VALVE
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DTC P0045 TC BOOST CONTROL SOLENOID VALVEPFP:14956
DescriptionEBS011O7
The turbocharger boost control NISSAN X-TRAIL 2003 Service Repair Manual DTC P0045 TC BOOST CONTROL SOLENOID VALVE
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DTC P0045 TC BOOST CONTROL SOLENOID VALVEPFP:14956
DescriptionEBS011O7
The turbocharger boost control](/manual-img/5/57404/w960_57404-1326.png)
DTC P0045 TC BOOST CONTROL SOLENOID VALVE
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DTC P0045 TC BOOST CONTROL SOLENOID VALVEPFP:14956
DescriptionEBS011O7
The turbocharger boost control solenoid valve controls vacuum sig-
nal to the turbocharger boost control actuator. By changing the vari-
able nozzle vane opening through the rods, the intake air volume is
adjusted.
The turbocharger boost control solenoid valve is moved by ON/OFF
pulse from the ECM. The longer the ON pulse, the charge air pres-
sure rises.
ECM Terminals and Reference ValueEBS011O8
Specification data are reference valves, and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may damage the
ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
MBIB0626E
PBIB1897E
TERMI-
NAL
NO.WIRE
COLORITEM CONDITIONDATA
(DC Voltage and Pulse Signal)
6LTurbocharger boost control
solenoid valve[Ignition switch ON]
Warm-up condition
Idle speed0 - 12.5V
[Ignition switch ON]
Warm-up condition
Engine speed is 2,000 rpm0 - 12.5V
MBIB0889E
MBIB0890E
Page 1328 of 4179
EC-950
[YD (WITH EURO-OBD)]
DTC P0045 TC BOOST CONTROL SOLENOID VALVE
On Board Diagnosis LogicEBS011TP
DTC Confirmation ProcedureEBS011TQ
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. Start engine and let it idle for at least 5 seconds.
4. If 1st trip DTC is detected, go to EC-952, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0045Turbocharger boost control sole-
noid valve circuit / openAn improper voltage is sent to ECM
through turbocharger boost control
solenoid valve.
Harness or connectors
(The solenoid valve circuit is
open or shorted.)
Turbocharger boost control
solenoid valve
SEF817Y