2003 NISSAN X-TRAIL fuse box

EC-34
[QR (WITH EURO-OBD)]
BASIC SERVICE PROCEDURE
DIAGNOSTIC PROCEDURE
If idle air volume learning cannot be performed successfully, proceed as follows:
1.Check that throttle valve is fully closed.
2.Check PCV valve operation.
3.Check that downstream of throttle valve is free from air leakage.
4.When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and eliminate the cause of the problem.
It is useful to performEC-103, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE".
5.If any of the following conditions occur after the engine has started, eliminate the cause of the
problem and perform “Idle air volume learning” all over again:
–Engine stalls.
–Erroneous idle.
Fuel Pressure CheckEBS00B0Z
FUEL PRESSURE RELEASE
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
NOTE:
Prepare pans or saucers under the disconnected fuel line because the fuel may spill out. The fuel pres-
sure cannot be completely released because QR engine models do not have fuel return system.
With CONSULT-II
1. Turn ignition switch “ON”.
2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”
mode with CONSULT-II.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel
pressure.
5. Turn ignition switch “OFF”.
Without CONSULT-II
1. Remove fuel pump fuse located in fuse box.
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel
pressure.
4. Turn ignition switch “OFF”.
5. Reinstall fuel pump fuse after servicing fuel system.
FUEL PRESSURE CHECK
CAUTION:
lThe fuel hose connection method used when taking fuel pressure check must not be used for
other purposes.
lTake care for not to scratch and not to put debris around connection area when servicing, so that
the quick connector keeps sealability with O-rings inside.
1. Release fuel pressure to zero. Refer toEC-34, "
FUEL PRESSURE RELEASE".
2. Prepare fuel hose for fuel pressure check, and connect fuel pressure gauge.
lUse suitable fuel hose for fuel pressure check (genuine NISSAN fuel hose without quick connector).
SEF214Y
PBIB0508E

EC-88
[QR (WITH EURO-OBD)]
TROUBLE DIAGNOSIS
CONSULT-II INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect “CONSULT-II” to data link connector, which is located
under LH dash panel near the fuse box cover.
3. Turn ignition switch ON.
4. Touch “START”.
5. Touch “ENGINE”.
6. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation Manual.
PBIB0376E
PBR455D
SEF995X
SEF824Y

TROUBLE DIAGNOSIS
EC-97
[QR (WITH EURO-OBD)]
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GST INSPECTION PROCEDURE
1. Turn ignition switch OFF.
2. Connect “GST” to data link connector, which is located under LH
dash panel near the fuse box cover.
3. Turn ignition switch ON.
4. Enter the program according to instruction on the screen or in
the operation manual.
(*: Regarding GST screens in this section, sample screens are
shown.)
5. Perform each diagnostic mode according to each service proce-
dure.
For further information, see the GST Operation Manual of the
tool maker.
CONSULT-II Reference Value in Data MonitorEBS00BMS
Remarks:
lSpecification data are reference values. MODE 4 CLEAR DIAG INFOThis mode can clear all emission-related diagnostic information. This includes:
lClear number of diagnostic trouble codes (MODE 1)
lClear diagnostic trouble codes (MODE 3)
lClear trouble code for freeze frame data (MODE 1)
lClear freeze frame data (MODE 2)
lReset status of system monitoring test (MODE 1)
lClear on board monitoring test results (MODE 6 and 7)
MODE 6 (ON BOARD TESTS)This mode accesses the results of on board diagnostic monitoring tests of specific com-
ponents/systems that are not continuously monitored.
MODE 7 (ON BOARD TESTS)This mode enables the off board test drive to obtain test results for emission-related pow-
ertrain components/systems that are continuously monitored during normal driving condi-
tions.
MODE 8 — This mode is not applicable on this vehicle.
MODE 9 (CALIBRATION ID)This mode enables the off-board test device to request specific vehicle information such
as Vehicle Identification Number (VIN) and Calibration IDs. Diagnostic test mode Function
PBIB0376E
SEF398S
SEF416S

BASIC SERVICE PROCEDURE
EC-399
[QR (WITHOUT EURO-OBD)]
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EC
DIAGNOSTIC PROCEDURE
If idle air volume learning cannot be performed successfully, proceed as follows:
1.Check that throttle valve is fully closed.
2.Check PCV valve operation.
3.Check that downstream of throttle valve is free from air leakage.
4.When the above three items check out OK, engine component parts and their installation condi-
tion are questionable. Check and eliminate the cause of the problem.
It is useful to performEC-449, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE".
5.If any of the following conditions occur after the engine has started, eliminate the cause of the
problem and perform “Idle air volume learning” all over again:
–Engine stalls.
–Erroneous idle.
Fuel Pressure CheckEBS00BF2
FUEL PRESSURE RELEASE
Before disconnecting fuel line, release fuel pressure from fuel line to eliminate danger.
With CONSULT-II
1. Turn ignition switch “ON”.
2. Perform “FUEL PRESSURE RELEASE” in “WORK SUPPORT”
mode with CONSULT-II.
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel
pressure.
5. Turn ignition switch “OFF”.
Without CONSULT-II
1. Remove fuel pump fuse located in fuse box.
2. Start engine.
3. After engine stalls, crank it two or three times to release all fuel
pressure.
4. Turn ignition switch “OFF”.
5. Reinstall fuel pump fuse after servicing fuel system.
FUEL PRESSURE CHECK
CAUTION:
lThe fuel hose connection method used when taking fuel pressure check must not be used for
other purposes.
lTake care for not to scratch and not to put debris around connection area when servicing, so that
the quick connector keeps sealability with O-rings inside.
1. Release fuel pressure to zero. Refer toEC-399, "
FUEL PRESSURE RELEASE".
2. Prepare fuel hose for fuel pressure check, and connect fuel pressure gauge.
lUse suitable fuel hose for fuel pressure check (genuine NISSAN fuel hose without quick connector).
lTo avoid unnecessary force or tension to hose, use moderately long fuel hose for fuel pressure check.
lDo not use the fuel hose for checking fuel pressure with damage or cracks on it.
lUse Pressure Gauge to check fuel pressure.
SEF214Y
PBIB0508E

EC-436
[QR (WITHOUT EURO-OBD)]
TROUBLE DIAGNOSIS
2. Connect “CONSULT-II” to data link connector, which is located
under LH dash panel near the fuse box cover.
3. Turn ignition switch ON.
4. Touch “START”.
5. Touch “ENGINE”.
6. Perform each diagnostic test mode according to each service
procedure.
For further information, see the CONSULT-II Operation Manual.
WORK SUPPORT MODE
Work Item
PBIB0376E
PBR455D
SEF995X
SEF824Y
WORK ITEM CONDITION USAGE
FUEL PRESSURE RELEASE
lFUEL PUMP WILL STOP BY TOUCHING “START” DUR-
ING IDLING.
CRANK A FEW TIMES AFTER ENGINE STALLS.When releasing fuel pressure
from fuel line
IDLE AIR VOL LEARN
lTHE IDLE AIR VOLUME THAT KEEPS THE ENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM.When learning the idle air volume

CYLINDER HEAD
EM-173
[YD22DDTi]
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CYLINDER HEADPFP:11041
On-Vehicle ServiceEBS00BPL
CHECKING COMPRESSION PRESSURE
1. Warm up engine thoroughly. Then, stop it.
2. Using CONSULT-II, make sure no error codes are indicated for self-diagnosis items. Refer toEC-672,
"Basic Inspection".
lDo not disconnect CONSULT-II until the end of this operation; it will be used to check engine rpm and
for error detection at the end of this operation.
3. Disconnect the negative battery terminal.
4. Remove the following parts.
lCharge air cooler (Refer toEM-114, "Removal and Installation".)
5. To prevent fuel from being injected during inspection, remove
fuel supply pump fuse [ENG CONT (20A)] from fuse box on the
left side of engine compartment.
lAmong marks on fuse box, [ENG CONT 3 (20A)] is for fuel
supply pump fuse.
6. Remove glow plugs from all the cylinders. Refer toEM-130,
"Removal and Installation".
CAUTION:
lBefore removal, clean the surrounding area to prevent
entry of any foreign materials into the engine.
lCarefully remove glow plugs to prevent any damage or
breakage.
lHandle with care to avoid applying any shock to glow plugs.
7. Install adapter to installation holes of glow plugs and connect
compression gauge for diesel engine.
8. Connect battery negative terminal.
9. Set the ignition switch to “START” and crank. When gauge
pointer stabilizes, read compression pressure and engine rpm.
Repeat the above steps for each cylinder.
lAlways use a fully-charged battery to obtain specified engine
speed.
Unit:kPa(bar,kg/cm2, psi)/rpm
lWhen engine rpm is out of the specified range, check the specific gravity of battery liquid. Measure
again under corrected conditions.
lIf engine rpm exceeds the limit, check valve clearance and combustion chamber components (valves,
valve seats, cylinder head gaskets, piston rings, pistons, cylinder bores, cylinder block upper and lower
surfaces) and measure again.
lIf compression pressure is low in some cylinders, apply engine oil from glow plug installation hole. Then
check pressure again.
–If compression pressure becomes normal after applying oil, piston ring may be worn or damaged.
Check piston ring for malfunction. If any, replace piston ring.
–If compression pressure is still low after applying oil, valve may be malfunctioning. Check valve for mal-
function. If contact malfunction is found, replace valve or valve seat.
lIf compression pressure in adjacent two cylinders is low after applying oil, pressure may be leaking
from gasket. In this case, replace cylinder head gasket.
SBIA0192E
:18-21N·m(1.8-2.2kg-m,13-15ft-lb)
Standard MinimumDifference limit between
cylinders
2,893 (28.9, 29.5, 419)/
2002,452 (24.52, 25.0, 356)/
200490 (4.90, 5.0, 71)/200
SEM112G

HOW TO USE THIS MANUAL
GI-17
Optional Splice
DESCRIPTION
SGI942
Num-
berItem Description
1 Power condition
lThis shows the condition when the system receives battery positive voltage (can be oper-
ated).
2 Fusible link
lThe double line shows that this is a fusible link.
lThe open circle shows current flow in, and the shaded circle shows current flow out.
3Fusible link/fuse loca-
tion
lThis shows the location of the fusible link or fuse in the fusible link or fuse box. For arrange-
ment, refer to PG section, POWER SUPPLY ROUTING.
4Fuse
lThe single line shows that this is a fuse.
lThe open circle shows current flow in, and the shaded circle shows current flow out.
5 Current rating
lThis shows the current rating of the fusible link or fuse.
6 Connectors
lThis shows that connector E3 is female and connector M1 is male.
lThe G/R wire is located in the 1A terminal of both connectors.
lTerminal number with an alphabet (1A, 5B, etc.) indicates that the connector is SMJ connec-
tor. Refer to PG section, SMJ (SUPER MULTIPLE JUNCTION).
7 Optional splice
lThe open circle shows that the splice is optional depending on vehicle application.
8 Splice
lThe shaded circle shows that the splice is always on the vehicle.
9 Page crossing
lThis arrow shows that the circuit continues to an adjacent page.
lThe A will match with the A on the preceding or next page.
10 Common connector
lThe dotted lines between terminals show that these terminals are part of the same connector.
11 Option abbreviation
lThis shows that the circuit is optional depending on vehicle application.
12 Relay
lThis shows an internal representation of the relay. For details, refer to PG section, STAN-
DARDIZED RELAY.

HOW TO USE THIS MANUAL
GI-19
Harness Indication
lLetter designations next to test meter probe indicate harness
(connector) wire color.
lConnector numbers in a single circle M33 indicate harness con-
nectors.
Component Indication
Connector numbers in a double circle F211 indicate component connectors.
Switch Positions
Switches are shown in wiring diagrams as if the vehicle is in the “normal” condition.
A vehicle is in the “normal” condition when:
31Fusible link and fuse
box
lThis shows the arrangement of fusible link(s) and fuse(s), used for connector views of
"POWER SUPPLY ROUTING" in PG section.
The open square shows current flow in, and the shaded square shows current flow out.
32 Reference area
lThis shows that more information on the Super Multiple Junction (SMJ) and Joint Connectors
(J/C) exists on the PG section. Refer to "Reference Area" for details. Num-
berItem Description
AGI070