2003 NISSAN X-TRAIL fuse diagram

IGNITION SIGNAL
EC-597
[QR (WITHOUT EURO-OBD)]
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EC
8.DETECT MALFUNCTIONING PART
Check the following.
l20A fuse
lHarness or connectors E61, F38
lHarness for open and short between ECM relay and fuse
>> Repair or replace harness or connectors.
9.CHECK ECM RELAY
Refer toEC-459, "
Component Inspection".
OK or NG
OK >> GO TO 17.
NG >> Replace ECM relay.
10.CHECK CONDENSER CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect condenser harness connector.
3. Check harness continuity between ECM terminal 12 and con-
denser terminal 1, condenser terminal 2 and engine ground.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
11 .CHECK CONDENSER
Refer toEC-599, "
Component Inspection".
OK or NG
OK >> GO TO 12.
NG >> Replace condenser.Continuity should exist.
PBIB0509E

INJECTOR CIRCUIT
EC-621
[QR (WITHOUT EURO-OBD)]
C
D
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MA
EC
3.CHECK INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect injector harness connector.
3. Turn ignition switch “ON”.
4. Check voltage between injector terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors M61, F41
lHarness connectors F1, F101
lFuse block (J/B) connector M1
l10A fuse
lHarness for open or short between injector and fuse
>> Repair harness or connectors.
5.CHECK INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect ECM harness connector.
3. Check harness continuity between injector terminal 2 and ECM terminals 101, 102, 103, 104.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
PBIB0510E
Voltage: Battery voltage
PBIB0582E
Continuity should exist.

EC-626
[QR (WITHOUT EURO-OBD)]
START SIGNAL
6.CHECK START SIGNAL INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Disconnect ignition switch harness connector.
3. Check harness continuity between ECM terminal 41 and fuse block (J/B), ignition switch and fuse block
(J/B). Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors
lFuse block (J/B) connectors M1, E102
lHarness for open or short between ignition switch and fuse block (J/B)
lHarness for open or short between ECM and fuse block (J/B)
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK INTERMITTENT INCIDENT
Refer toEC-453, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT".
>>INSPECTION END Continuity should exist.

EC-704
[YD]
POWER SUPPLY CIRCUIT FOR ECM
8.CHECK OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminals D24, D26 and ECM relay terminal 2. Refer to Wiring
Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
9.CHECK ECM POWER SUPPLY CIRCUIT-IV
1. Check harness continuity between ECM terminals A8, A9 and ECM relay terminal 7. Refer to Wiring Dia-
gram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
10.CHECK ECM RELAY
Refer toEC-705, "
Component Inspection".
OK or NG
OK >> GO TO 11.
NG >> Replace ECM relay.
11 .CHECK ECM POWER SUPPLY CIRCUIT-V
1. Turn ignition switch “OFF”.
2. Check voltage between ECM terminal A31 and ground.
OK or NG
OK >> GO TO 13.
NG >> GO TO 12.
12.DETECT MALFUNCTIONING PART
Check the following.
lHarness connectors E65, F6
l20A fuse
lHarness for open or short between ECM and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors. Continuity should exist.
Continuity should exist.
Voltage: Battery voltage
PBIB0478E

DTC P1217 OVERHEAT (COOLING SYSTEM)
EC-767
[YD]
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EC
2.DETECT MALFUNCTIONING PART
Check the following.
lFuse block (J/B) connector E103
l10A fuse
l40A fusible links
lHarness for open or short between cooling fan relay-1 and fuse
lHarness for open or short between cooling fan relay-1 and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK COOLING FAN GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
3. Check harness continuity between cooling fan relay-1 terminal 3 and cooling fan motor-1 terminal 1, cool-
ing fan motor-1 terminal 4 and body ground. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
5. Check harness continuity between cooling fan relay-1 terminal 6 and cooling fan motor-2 terminal 1, cool-
ing fan motor-2 terminal 4 and body ground. Refer to Wiring Diagram.
6. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK COOLING FAN OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal E2 and cooling fan relay-1 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 >> GO TO 5.
PBIB0479E
Continuity should exist.
Continuity should exist.
Continuity should exist.

DTC P1217 OVERHEAT (COOLING SYSTEM)
EC-769
[YD]
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MA
EC
2.DETECT MALFUNCTIONING PART
Check the following.
lHarness for open or short between cooling fan relays-2 and -3 and fuse
lHarness for open or short between cooling fan relays-2 and -3 and fusible link
>> Repair harness or connectors.
3.CHECK COOLING FAN GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch “OFF”.
2. Disconnect cooling fan motor-1 harness connector and cooling fan motor-2 harness connector.
3. Check harness continuity between cooling fan relay-2 terminal 5 and cooling fan motor-1 terminal 2, cool-
ing fan relay-2 terminal 6 and cooling fan motor-1 terminal 3, cooling fan relay-2 terminal 7 and body
ground. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
5. Check harness continuity between cooling fan relay-3 terminal 5 and cooling fan motor-2 terminal 2, cool-
ing fan relay-3 terminal 6 and cooling fan motor-2 terminal 3, cooling fan relay-3 terminal 7 and body
ground. Refer to Wiring Diagram.
6. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK COOLING FAN OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal E7 and cooling fan relay-2 terminal 2, cooling fan relay-
3 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 >> GO TO 5.
PBIB0479E
Continuity should exist.
Continuity should exist.
Continuity should exist.

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

IDX-5
A
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IDX
ALPHABETICAL INDEX
Front washer ......................................................WW-4
Front wiper .........................................................WW-4
FTS - Wiring diagram ......................................EC-752
Fuel check valve ..............................................EC-372
Fuel cut control (at no load high engine speed)EC-28,
EC-393
,EC-662
Fuel filler lid ........................................................BL-64
Fuel filter ..........................................................EC-664
Fuel filter replacement(QR20DE) .........................FL-4
Fuel filter replacement(YD22DDTi) .......FL-15,MA-30
Fuel gauge ..................................................DI-4,DI-22
Fuel injection control system ...........................EC-660
Fuel injection system .........................EC-194,EC-200
Fuel injector .....................................................EC-727
Fuel injector adjustment resistor ......................EC-777
Fuel injector and fuel tube(QR20DE) ................EM-29
Fuel injector and fuel tube(YD22DDTi) ............EM-135
Fuel leak ..........................................................EC-781
Fuel line inspection(QR20DE) .................FL-3,MA-23
Fuel line inspection(YD22DDTi) ............FL-14,MA-30
Fuel pressure check ............................EC-34,EC-399
Fuel pressure release ..........................EC-34,EC-399
Fuel pressure relief valve ................................EC-665
Fuel pump ..........................................EC-352,EC-627
Fuel pump and gauge(QR20DE) ..........................FL-4
Fuel system(QR20DE) .........................................FL-3
Fuel system(YD22DDTi) .....................................FL-14
Fuel tank(QR20DE) ..............................................FL-9
Fuel tank(YD22DDTi) .........................................FL-21
Fuel temperature sensor .................................EC-751
Fuse ...................................................................PG-12
Fuse and fusible link box ...................................PG-77
Fusible link .........................................................PG-12
G
Gear components (M/T) .......................MT-19
,MT-24
Generator ..........................................................SC-12
Generator - See Alternator ................................SC-12
Generic scan tool (GST) ....................................EC-96
Glass ..................................................GW-41,GW-43
GLOW - Wiring diagram ..................................EC-797
Glow plug .........................................................EC-796
Glow plug(YD22DDTi) .....................................EM-130
Glow relay ........................................................EC-796
Grease ...............................................................MA-17
Grille - See Exterior .............................................EI-11
Ground distribution ............................................PG-13
G-sensor .............................................................TF-50
H
H/AIM - Wiring diagram ......................................LT-15
H/LAMP - Wiring diagram ...........................LT-4,LT-5
H/MIRROR - Wiring diagram ............................GW-10
Harness connector ............................................PG-70
Harness layout ...................................................PG-29
Headlamp .............................................................LT-4
Headlamp aiming control ....................................LT-15
Headlamp leveler - See Headlamp aiming control .......
LT-15
Headlamp washer ............................................WW-19
Headlining - See Roof trim ..................................EI-29
Heated oxygen sensor 1 ....EC-160,EC-166,EC-174,
EC-284
,EC-290,EC-490,EC-581
Heated oxygen sensor 1 heater .........EC-120,EC-568
Heated oxygen sensor 2 ....EC-181,EC-187,EC-296,
EC-303
,EC-587
Heated oxygen sensor 2 heater .........EC-125,EC-573
Heated seat ...............................................SE-3,SE-5
HEATER - Wiring diagram ................................MTC-6
Heater and cooling unit (Heater core) ............ATC-115
Heater mirror .....................................................GW-10
Heater system - Wiring diagram .......................MTC-6
Heater unit (heater core) ..ATC-120,MTC-23,MTC-26
HFC134a (R134a) system precaution ...............ATC-4
HFC134a (R134a) system service procedureATC-123
HFC134a (R134a) system service tools ..........ATC-12
HFC134a system service equipment precautionATC-8
HO2S1 - Wiring diaram ......EC-122,EC-162,EC-169,
EC-177
,EC-492
HO2S2 - Wiring diagram ....EC-183,EC-190,EC-299,
EC-306
HO2S2H - Wiring diagram ...............................EC-127
Hood ....................................................................BL-4
Horn .................................................................WW-23
HORN - Wiring diagram ...................................WW-23
How to erase DTC ...........................................EC-666
HowtoeraseDTCforOBDsystem .....EC-46,EC-402
I
IATS - Wiring diagram .....................................EC-138
IATSEN - Wiring diagram ................................EC-578
Identification .....................................................ATC-10
Idle air volume learning ........................EC-31,EC-396
Idle speed .............................EC-64,EC-412,EC-672
IGN/SG - Wiring diagram .................................EC-335
Ignition coil .........................................EC-334,EC-592
Ignition coil(QR20DE) .......................................EM-27
Ignition control system .......................EC-334,EC-592
Ignition timing .......................................EC-64,EC-412
IGNSYS - Wiring diagram ................................EC-593
ILL - Wiring diagram ...........................................LT-45
Illumination ..........................................................LT-45
In vehicle sensor ...............ATC-95,ATC-97,ATC-106
INJECT - Wiring diagram ....EC-344,EC-619,EC-730
Injection nozzle(YD22DDTi) ...........................EM-135
Injector ...............................................EC-343,EC-618
Input shaft (FF M/T) ..............................MT-19,MT-24
Instrument panel ...................................................IP-3
INT/L - Wiring diagram ........................................LT-65
Intake air temparature sensor ............EC-136,EC-577
Intake door control linkage adjustment ............ATC-66
Intake door motorATC-64,ATC-112,MTC-10,MTC-22
Intake manifold(QR20DE) .................................EM-17