2003 NISSAN X-TRAIL sensor

DI-2
Engine Models) ....................................................... 31
Inspection/Vehicle speed signal ............................. 32
Inspection/Fuel Level Sensor Unit .......................... 33
FUEL LEVEL SENSOR UNIT .............................. 33
LOW-FUEL WARNING LAMP ............................. 33
The Fuel Gauge Pointer Fluctuates·Indicator
Wrong Value·or Varies. ........................................... 35
The Fuel Gauge Does Not Move to F-position. ...... 36
The Fuel Gauge Does Not Work. ........................... 36
Low Fuel Warning Lamp Illuminate or Not Illuminate... 37
Electrical Components Inspection .......................... 37
FUEL LEVEL SENSOR UNIT CHECK / GASO-
LINE ENGINE MODELS ...................................... 37
FUEL LEVEL SENSOR UNIT CHECK / DIESEL
ENGINE MODELS ............................................... 37
THERMAL TRANSMITTER CHECK ................... 38
Removal and Installation for Combination Meter .... 38
Disassembly and Assembly for Combination Meter... 38
WARNING LAMPS .................................................... 39
Schematic ............................................................... 39
Wiring Diagram — WARN —/ LHD Models ............ 40Wiring Diagram — WARN — / RHD Models ...........45
Electrical Components Inspection ...........................50
FUEL WARNING LAMP OPERATION CHECK ... 50
OIL PRESSURE SWITCH CHECK ......................50
DIODE CHECK ....................................................50
A/T INDICATOR .........................................................51
Wiring Diagram — AT/IND — .................................51
WARNING CHIME .....................................................52
System Description .................................................52
POWER SUPPLY AND GROUND CIRCUIT .......52
IGNITION KEY WARNING CHIME ......................52
LIGHT WARNING CHIME ...................................52
Component Parts and Harness Connector Location... 53
Wiring Diagram — CHIME — .................................54
Symptom Chart .......................................................56
Power Supply and Ground Circuit Check ...............56
Lighting Switch Input Signal Check .........................57
Key Switch Insert Signal Check ..............................57
Door Unlock Sensor Check .....................................58
Front Door Switch (driver side) Check ....................59
CLOCK ......................................................................60
Wiring Diagram — CLOCK — .................................60

DI-4
COMBINATION METERS (LHD MODELS)
COMBINATION METERS (LHD MODELS)
PFP:24810
System DescriptionEKS002Z7
UNIFIED CONTROL METER
lSpeedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled totally
by control unit built-in combination meter.
lDigital meter is adopted for odo/trip meter.*
*The record of the odo meter is kept even if the battery cable is disconnected. The record of the trip meter
is erased when the battery cable is disconnected.
lOdo/trip meter segment can be checked in diagnosis mode.
lMeter/gauge can be checked in diagnosis mode.
HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METER
NOTE:
Turn ignition switch to the “ON” position to operate odo/trip meter.
POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
lthrough 10A fuse [No. 28, located in the fuse block (J/B)]
lto combination meter terminal 45.
With the ignition switch in the ON or START position, power is supplied
lthrough 10A fuse [No. 11, located in the fuse block (J/B)]
lto combination meter terminal 46.
Ground is supplied
lthrough body grounds M27 and M70
lto combination meter terminal 47.
WATER TEMPERATURE GAUGE
Gasoline engine models
The water temperature gauge indicates the engine coolant temperature. The reading on the gauge is received
engine coolant temperature signal from ECM. ECM is detected by water temperature sensor.
The water temperature gauge is received by a signal
lfrom ECM terminal 32
lto combination meter terminal 55.
The needle on the gauge moves from “C” to “H”
SKIA0896E

COMBINATION METERS (LHD MODELS)
DI-5
C
D
E
F
G
H
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B
DI
Diesel engine models
The water temperature gauge indicates the engine coolant temperature. The reading on the gauge is based
on the resistance of the thermal transmitter.
As the temperature of the coolant increases, the resistance of the thermal transmitter decreases. A variable
ground is supplied to terminal 55 of the combination meter for the water temperature gauge. The needle on
the gauge moves from “C” to “H”.
TACHOMETER
The tachometer indicates engine speed in revolutions per minute (rpm).
The tachometer is regulated by a signal
lfrom terminal 36 (Gasoline engine models) or D1 (Diesel engine models) of the ECM
lto combination meter terminal 54 for the tachometer.
FUEL GAUGE
The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by a variable ground signal supplied
lfrom body grounds, B8 and B18
lthrough terminal 1 and 3 of the Sub fuel level sensor unit and
lthrough terminal 4 and 1 of the fuel level sensor unit
lto combination meter terminal 51 for the fuel gauge.
SPEEDOMETER
The combination meter provides a voltage signal to the vehicle speed signal from 4WD/ABS control unit (with-
out ESP) or 4WD control unit (with ESP).
The voltage is supplied
lfrom combination meter terminal 42 for the speedometer
lto terminal 20 of 4WD/ABS control unit (without ESP) or 4WD control unit (without ESP).
The speedometer converts the voltage into the vehicle speed displayed.
Component Parts and Harness Connector LocationEKS002Z8
SKIA1009E

COMBINATION METERS (LHD MODELS)
DI-11
C
D
E
F
G
H
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B
DI
3.SEGMENTS CHECK
Check odo / trip meter segment.
Do all segments illuminate?
YES >> GO TO 4.
NO >> Replace combination meter.
4.CHECK FUEL WARNING LAMP
Check fuel warning lamp in diagnosis mode. Refer toDI-12, "
Power Supply and Ground Circuit Check".
Do fuel warning lamp illuminate?
OK >> GO TO 5.
NG >> Replace combination meter.
5.CHECK METER CIRCUIT
Check indication of each meter/gauge in self-diagnosis mode. Refer toDI-12, "
Power Supply and Ground Cir-
cuit Check".
OK or NG?
OK >> Symptom chart
NG >> Replace combination meter.
SYMPTOM CHART
Symptom Possible cause Repair procedure
Fuel warning lamp is
malfunctioning.
1. Sensor Signal
–Engine revolution signal
–Fuel gauge
–Water temp gauge
2. Unified meter control unit1. Check the sensor for malfunctioning meter/gauge.
–INSPECTION/ENGINE SPEED SIGNAL (Refer toDI-12,
"Inspection/Engine Speed Signal".)
–INSPECTION/FUEL LEVEL SENSOR UNIT (Refer toDI-15,
"Inspection/Fuel Level Sensor Unit".)
–INSPECTION/THERMAL TRANSMITTER (Refer toDI-13,
"Inspection/Water Temperature Gauge /Gasoline Engine Models"
orDI-13, "Inspection/Water Temperature Gauge (Diesel Engine
Models)".)
2. Replace combination meter One of tachometer/fuel
gauge/water temp. gauge is
malfunctioning.
Speedometer and odo/trip
meter is malfunctioning.1. Sensor Signal
–Vehicle speed signal
2. Unified meter control unit1. Check the sensor for malfunctioning meter/gauge.–INSPECTION/VEHICLE SPEED SIGNAL (Refer toDI-12,
"Inspection/Engine Speed Signal".)
2. Replace combination meter
Multiple meter/gauge are
malfunctioning.
lUnified meter control unitlReplace combination meter.

COMBINATION METERS (LHD MODELS)
DI-15
C
D
E
F
G
H
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B
DI
4.CHECK VEHICLE SPEED INPUT SIGNAL
1. Connect 4WD/ABS control unit (without EPS)or 4WD control
unit (with EPS) connector.
2. Lift up drive wheels.
3. Start engine.
4. Check voltage signal between combination meter harness con-
nector M46 terminal 52 (R/B) and ground.
OK or NG?
OK >> Replace combination meter.
NG >> Check ABS system.
Inspection/Fuel Level Sensor UnitEKS002ZI
FUEL LEVEL SENSOR UNIT
The following symptoms do not indicate a malfunction.
lDepending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the pointer
may fluctuate.
lIf the vehicle is fueled with the ignition switch ON, the pointer will move slowly.
LOW-FUEL WARNING LAMP
Depending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the warning lamp
ON timing may be changed.
1.DIAGNOSIS MODE INSPECTION
Preform the combination meter diagnosis mode. Refer toDI-10, "
Meter/Gauge Operation and Odo/Trip Meter
Segment Check in Diagnosis Mode".
OK or NG
OK >> GO TO 2.
NG >> Replace combination meter.
2.HARNESS CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Check combination meter, fuel level sensor unit and terminals (meter-side, module-side, and harness-
side) for poor connection and bend.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace terminals or connectors.52 (R/B) – ground
SKIA0990E

DI-16
COMBINATION METERS (LHD MODELS)
3.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect combination meter connector, fuel level sensor unit
connector and sub fuel level sensor unit connector.
2. Check the following.
–Continuity between combination meter harness connector M46
terminal 51 (G) and sub fuel level sensor unit harness connector
B125 terminal 1 (G).
–Continuity between sub fuel level sensor unit harness connector
B125 terminal 3 (Y) and fuel level sensor unit harness connector
B31(Gasoline engine models) or B32 (Diesel engine models)
terminal 4 (Y).
OK or NG?
OK >> GO TO 4.
NG >> Repair or replace harnesses or connectors.Continuity should exist.
SKIA0991E
SKIA1005E

COMBINATION METERS (LHD MODELS)
DI-17
C
D
E
F
G
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B
DI
4.CHECK HARNESS FOR SHORT CIRCUIT
1. Checking the following.
–Continuity between combination meter harness connector M46
terminal 51(G) and ground.
–Continuity between sub fuel level sensor harness connector
B125 terminal 3 (Y) and ground.
–Continuity between fuel level sensor unit harness connector
B31(Gasoline engine models) or B32 (Diesel engine models)
terminal 1(B/W) and ground.
OK or NG?
OK >> GO TO 5.
NG >> Repair or replace harnesses or connectors.
5.FUEL LEVEL SENSOR UNIT INSPECTION
Check the components. Refer toDI-19, "
Electrical Components Inspection".
OK or NG
OK >> GO TO 6.
NG >> Replace fuel level sensor unit or sub fuel level sensor unit.
6.CHECK INSTALLATION CONDITION
Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any compo-
nents inside the arm.
OK or NG
OK >> Replace combination meter.
NG >> Install fuel level sensor unit or sub fuel sensor unit properly.
The Fuel Gauge Pointer Fluctuates·Indicator Wrong Value·or Varies.EKS002ZJ
1.CHECK THE FUEL GAUGE POINTER FOR FLUCTUATION
Does the indication value fluctuate during driving or before/after stop?
Does the indication value vary?
YES >> The pointer fluctuation may be caused by fuel level change in the fuel tank.
NO >> Ask the customer about the situation when the symptom occurs in detail, and Preform the trouble
diagnosis. Continuity should not exist.
SKIA0992E
SKIA1007E

DI-18
COMBINATION METERS (LHD MODELS)
The Fuel Gauge Does Not Move to F-position.
EKS002ZK
1.QUESTIONNAIRE 1
Does it take a long time for the pointer to move to F-position?
YES?
YES >> GO TO 2.
NO >> GO TO 3.
2.QUESTIONNAIRE 2
Was the vehicle fueled with the ignition switch ON?
YES?
YES >> Be sure to fuel the vehicle with the ignition switch OFF. Otherwise it will take a long time to move
to F-position because of the characteristic of the fuel gauge.
NO >> GO TO 3.
3.QUESTIONNAIRE 3
Is the floor or the vehicle inclined?
YES?
YES >> It may not be filled fully.
NO >> GO TO 4.
4.QUESTIONNAIRE 4
During driving, does the fuel gauge pointer move gradually toward E-position?
YES?
YES >> Check the components. Refer toDI-19, "Electrical Components Inspection".
NO >> The float arm may interfere or bind with any of the components in the fuel tank.
The Fuel Gauge Does Not Work.EKS002ZL
1.HARNESS CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Check combination meter, fuel level sensor unit, sub fuel level sensor unit and terminals (meter-side,
module-side, and harness-side) for poor connection and bend.
OK or NG
OK >> GO TO 2.
NG >> Repair connector.
2.CHECK INSTALLATION CONDITION
Check fuel level sensor unit or sub fuel level sensor unit installation (refer toFL-4, "
FUEL LEVEL SENSOR
UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"for QR engine models orFL-17, "FUEL LEVEL SEN-
SOR UNIT"for YD engine models, and check whether the float arm interferes or binds with any components
inside the arm.
OK or NG
OK >> Fuel level sensor unit is OK.
NG >> Check fuel level sensor unit or sub fuel level sensor unit. Refer toDI-19, "
Electrical Components
Inspection".