2001 NISSAN X-TRAIL fuse box

BASIC SERVICE PROCEDURE
EC-775
[QR20(WITH EURO-OBD)]
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EC
It is useful to perform EC-843, "TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
5.If any of the following conditions occur after the engine has started, eliminate the cause of the
incident and perform “Idle air volume learning” all over again:
–Engine stalls.
–Erroneous idle.
Fuel Pressure CheckEBS00MSK
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:
●The fuel hose connection method used when taking fuel pressure check must not be used for
other purposes.
●Take 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 to EC-775, "
FUEL PRESSURE RELEASE" .
2. Prepare fuel hose for fuel pressure check, and connect fuel pressure gauge.
●Use suitable fuel hose for fuel pressure check (genuine NISSAN fuel hose without quick connector).
●To avoid unnecessary force or tension to hose, use moderately long fuel hose for fuel pressure check.
●Do not use the fuel hose for checking fuel pressure with damage or cracks on it.
●Use Pressure Gauge to check fuel pressure.
3. Remove fuel hose. Refer to EM-16, "
INTAKE MANIFOLD" .
●Do not twist or kink fuel hose because it is plastic hose.
●Do not remove fuel hose from quick connector.
●Keep the original fuel hose to be free from intrusion of dust or foreign substances with a suitable cover.
SEF214Y
PBIB0508E

EC-828
[QR20(WITH 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 (NISSAN BASED VHCL)”.
5. Touch “ENGINE”.
If “ENGINE” is not indicated, go to GI-34, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
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
MBIB0233E
SEF995X
SEF824Y
WORK ITEM CONDITION USAGE
FUEL PRESSURE RELEASE
●FUEL 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
●THE IDLE AIR VOLUME THAT KEEPS THE ENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM.When learning the idle air volume

TROUBLE DIAGNOSIS
EC-837
[QR20(WITH EURO-OBD)]
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EC
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.
MODE 4 CLEAR DIAG INFOThis mode can clear all emission-related diagnostic information. This includes:
●Clear number of diagnostic trouble codes (MODE 1)
●Clear diagnostic trouble codes (MODE 3)
●Clear trouble code for freeze frame data (MODE 1)
●Clear freeze frame data (MODE 2)
●Reset status of system monitoring test (MODE 1)
●Clear 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-1139
[QR20(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 incident.
It is useful to perform EC-1188, "
TROUBLE DIAGNOSIS - SPECIFICATION VALUE" .
5.If any of the following conditions occur after the engine has started, eliminate the cause of the
incident and perform “Idle air volume learning” all over again:
–Engine stalls.
–Erroneous idle.
Fuel Pressure CheckEBS00N3Q
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:
●The fuel hose connection method used when taking fuel pressure check must not be used for
other purposes.
●Take 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 to EC-1139, "
FUEL PRESSURE RELEASE" .
2. Prepare fuel hose for fuel pressure check, and connect fuel pressure gauge.
●Use suitable fuel hose for fuel pressure check (genuine NISSAN fuel hose without quick connector).
●To avoid unnecessary force or tension to hose, use moderately long fuel hose for fuel pressure check.
●Do not use the fuel hose for checking fuel pressure with damage or cracks on it.
●Use Pressure Gauge to check fuel pressure.
3. Remove fuel hose. Refer to EM-16, "
INTAKE MANIFOLD" .
SEF214Y
PBIB0508E

TROUBLE DIAGNOSIS
EC-1175
[QR20(WITHOUT EURO-OBD)]
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EC
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 (NISSAN BASED VHCL)”.
5. Touch “ENGINE”.
If “ENGINE” is not indicated, go to GI-34, "
CONSULT-II Data
Link Connector (DLC) Circuit" .
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
MBIB0233E
SEF995X
SEF824Y
WORK ITEM CONDITION USAGE
FUEL PRESSURE RELEASE
●FUEL 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
●THE IDLE AIR VOLUME THAT KEEPS THE ENGINE
WITHIN THE SPECIFIED RANGE IS MEMORIZED IN
ECM.When learning the idle air volume

TROUBLE DIAGNOSIS
BRC-43
[4WD/ABS]
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BRC
3.CHECK CONTINUITY BETWEEN IGNITION SWITCH AND ABS WARNING LAMP
●Disconnect 4WD/ABS control unit connector.
●Check continuity between ignition switch and 4WD/ABS control module terminal No. 4. (Open circuit
check)
Is inspection result OK?
YES >> Continuity exists. Connect 4WD/ABS control module connector, check again.
NO >> Continuity does not exist. Check ABS warning lamp path.
4.CHECK FUSE
●Check if Fuse No.8 is working normally.
Is the check result OK?
YES >> Repair or replace the harness in between 4WD/ABS control unit and IGN.
NO >> Replace the fuse and replace again.
●If the figure of the monitor is with in ± 10% of the set value of E-TS solenoid electric current, 4WD/ABS C/
U is operating normally. Check for electric control coupling ASSY is required.
4WD Warning Lamp Does Not Illuminate With Ignition ON.EFS001BR
1.INSPECTION OF BLOWN 4WD WARNING LAMP BULB
●Remove glove box on the passenger side and disconnect the 4WD/ABS control unit connector.
●Confirm continuity between 4WD/ABS control unit connector terminals No. 3 (IGN) and No. 4 (ABS warn-
ing lamp).
Is inspection result OK?
YES >> GO TO 3. (Continuity exists.)
NO >>
●Check 4WD warning lamp harness.
●Remove meter control module assembly and check for blown 4WD warning lamp bulb.
2.4WD ACTUATOR RELAY HARNESS INSPECTION
●Open the hood and check that the 4WD relay is properly installed in the relay box.
●Confirm continuity between 4WD/ABS control unit connector terminals No. 7 (4WD warning lamp) and No.
104 (ground).
●Confirm continuity between 4WD/ABS control unit connector terminals No. 3 (IGN) and No. 18 (4WD
actuator relay).
Is inspection result OK?
YES >> Continuity exists. Connect 4WD/ABS control unit connector, check again.
NO >> Check ABS warning lamp harness.
4WD Warning Lamp Does Not Go Out Several Seconds After Engine Is Started.
(Drive Mode Indicator Lamp Goes Out.)
EFS001BS
1.USING CONSULT, PERFORM SELF-DIAGNOSIS
4WD warning lamp does not go out several seconds after the engine is started. (Drive mode indicator lamp
goes out.)
Is inspection result OK?
YES >> No malfunction detected. Perform inspection again.
NO >>
●Determine the location of the malfunction according to the result of self-diagnosis using CON-
SULT. (Malfunction is present in the 4WD system.)
●CONSULT-II does not display ABS -related trouble codes. Proceed to 2.

TROUBLE DIAGNOSIS
BRC-103
[ESP/TCS/ABS]
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BRC
2.SELF-DIAGNOSIS RESULT CHECK 2
1. Disconnect connectors for the ESP/TCS/ABS control unit and the actuator. Securely connect them again.
2. Perform the self-diagnosis again.
Are any self-diagnosis items indicated again?
YES >> GO TO 3.
NO >> Repair or replace the poorly connected connector.
3.ACTUATOR MOTOR, MOTOR RELAY POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect relay box connectors.
2. Check the voltage between the vehicle-side connector E55 and body ground.
Is inspection result OK?
YES >> GO TO 4.
NO >>
●Check the fuse 50A.
●Check for continuity between the battery and the relay box terminal No. 10.
4.ACTUATOR MOTOR AND MOTOR RELAY CIRCUIT CHECK
1. Disconnect connectors for the ESP/TCS/ABS control unit and
the relay box.
2. Check for continuity between the ESP/TCS/ABS control unit,
the relay, and the actuator (vehicle-side connector E66).
* Except for LHD models and YD engine.
Is inspection result OK?
YES >> GO TO 5.
NO >> Harness malfunction between the ESP/TCS/
ABS control unit, the relay box and the actuator.
SFIA0917E
Relay box
(Vehicle-side connector E55)Body ground Voltage value
10 (W/R) – Battery voltage (approx. 12V)
ESP/TCS/ABS
control unit
(Vehicle-side
connector B111)ESP relay box
(Vehicle-side
connector E56)ESP actuator
(Vehicle-side
connector E66)Continuity
20 (R/B) 4 (R/B) — Yes
7 (G/W) 8 (G/W) — Yes
— 41 (G/Y) * 21 (G/Y) * Yes
SFIA0903E

TROUBLE DIAGNOSIS
BRC-105
[ESP/TCS/ABS]
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BRC
4.ACTUATOR RELAY POWER SUPPLY CIRCUIT INSPECTION
1. Disconnect relay box connectors.
2. Check the voltage between the vehicle-side connector E55 and
body ground.
Is inspection result OK?
YES >> GO TO 5.
NO >>
●Check the fuse 30A.
●Check for continuity between the battery and the relay box terminal No. 9. If it is not OK,
replace the fuse or harness.
5.ACTUATOR RELAY POWER CIRCUIT CHECK
1. Disconnect connectors for the ESP/TCS/ABS control unit and
the relay box.
2. Check for continuity between the ESP/TCS/ABS control unit
(vehicle-side connector B111) and the relay box (vehicle-side
connector E56).
Is inspection result OK?
YES >> GO TO 6.
NO >> Harness disconnection between the ESP/TCS/ABS control unit and the relay box.
6.ACTUATOR RELAY UNIT INSPECTION
Check the actuator relay as a unit.
Is inspection result OK?
YES >> Check the ESP/TCS/ABS control unit power supply circuit.
NO >> Replace the actuator relay.
SFIA0919E
RELAY BOX
(Vehicle-side connector) E55Body ground Voltage value
9 (BR) – Battery voltage (approx. 12V)
SFIA0920E
ESP/TCS/ABS control unit
(Vehicle-side connector B111)ESP relay box
(Vehicle-side connector E56)Continuity
2 (Y/R) 5 (Y/R) Yes
36 (L/Y) 7 (L/Y) Yes