Infiniti QX4 (R50). Manual — part 319
MEL791L
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
INTERIOR, SPOT, VANITY MIRROR AND LUGGAGE ROOM LAMPS
Wiring Diagram — INT/L — (Cont’d)
EL-93
Component Parts and Harness Connector
Location
NBEL0041
SEL351X
System Description
NBEL0042
UNIFIED CONTROL METER
NBEL0042S06
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Speedometer, odo/trip meter, tachometer, fuel gauge and water temperature gauge are controlled totally
by control unit.
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Digital 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.
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Odo/trip meter is indicated for about 30 seconds after ignition switch has been turned OFF.
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Odo/trip meter segment can be checked in diagnosis mode.
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Meter/gauge can be checked in diagnosis mode.
HOW TO CHANGE THE DISPLAY FOR ODO/TRIP METER
NBEL0042S07
SEL175W
NOTE:
Turn ignition switch to the “ON” position to operate odo/trip meter.
METERS AND GAUGES
Component Parts and Harness Connector Location
EL-94
POWER SUPPLY AND GROUND CIRCUIT
NBEL0042S08
Power is supplied at all times
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through 7.5A fuse [No. 24, located in the fuse block (J/B)]
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to combination meter terminal 62.
With the ignition switch in the ON or START position, power is supplied
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through 10A fuse [No. 8, located in the fuse block (J/B)]
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to combination meter terminal 66.
Ground is supplied
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to combination meter terminal 59
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through body grounds M4, M66 and M147.
WATER TEMPERATURE GAUGE
NBEL0042S01
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 18 of the combination meter for the water temperature gauge. The needle on
the gauge moves from “C” to “H”.
TACHOMETER
NBEL0042S02
The tachometer indicates engine speed in revolutions per minute (rpm).
The tachometer is regulated by a signal
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from terminal 25 of the ECM
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to combination meter terminal 16 for the tachometer.
FUEL GAUGE
NBEL0042S03
The fuel gauge indicates the approximate fuel level in the fuel tank.
The fuel gauge is regulated by a variable ground signal supplied
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to combination meter terminal 17 for the fuel gauge
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from terminal 3 of the fuel level sensor unit
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through terminal 2 of the fuel level sensor unit and
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through body grounds B11, B22 and D210.
SPEEDOMETER
NBEL0042S04
The vehicle speed sensor provides a voltage signal to the combination meter for the speedometer.
The voltage is supplied
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from combination meter terminal 15 for the speedometer
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to terminal 2 of the vehicle speed sensor.
The speedometer converts the voltage into the vehicle speed displayed.
GI
MA
EM
LC
EC
FE
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
IDX
METERS AND GAUGES
System Description (Cont’d)
EL-95
Combination Meter
NBEL0043
CHECK
NBEL0043S01
MEL130M
METERS AND GAUGES
Combination Meter
EL-96
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