Infiniti FX35, FX50 (S51). Manual - part 1372

MWI

METER SYSTEM

MWI-7

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Between unified meter and A/C amp. and combination meter.

IPDM E/R

• IPDM E/R reads the ON/OFF signals of the oil pressure switch and transmits the oil pressure switch signal to

the unified meter and A/C amp. via BCM with the CAN communication line.

• IPDM E/R is equipped with the diagnosis function. It can perform the operation check of oil pressure warning

lamp with the auto active test and the diagnosis with CONSULT-III.

METER CONTROL FUNCTION LIST

Unit

Communication line

Input from combination meter

Output to combination meter

Unified meter 
and A/C amp.

Communication line
(METER <-> AMP.)

• Parking brake switch signal 
• Washer level switch signal
• Meter day/night condition signal
• Illumination control switch signal
• Refuel status signal
• Low fuel warning lamp signal
• Odo data signal

• Vehicle speed signal
• Turn indicator signal
• High beam request signal
• Position light request signal
• Engine speed signal
• Fuel level sensor signal
• Engine coolant temperature signal
• A/T CHECK indicator signal
• Oil pressure switch signal
• Door switch signal
• Buzzer output signal 
• Key warning lamp signal
• AFS OFF indicator lamp signal
• Tire pressure signal
• AWD warning lamp signal
• VDC OFF indicator lamp signal
• SLIP indicator lamp signal
• IBA OFF indicator lamp signal
• ABS warning lamp signal
• Brake warning lamp signal
• Malfunction indicator lamp signal
• Master warning signal
• ICC warning lamp signal
• Lane departure warning lamp signal
• LDP ON indicator lamp signal
• RAS warning lamp signal
• Sports mode indicator lamp signal
• Meter effect signal
• Meter ring illumination request signal

Communication line
(LCD <-> AMP.)

• Average fuel consumption reset signal
• Travel time reset signal
• Possible driving distance reset signal
• Average vehicle speed reset signal
• Select switch signal
• Enter switch signal
• Trip A/B reset switch signal
• Ambient air temperature display signal

• Shift position signal
• Meter display signal
• Door switch signal
• Fuel level sensor signal
• Parking brake switch signal
• Washer level switch signal
• Charge warning signal
• Instantaneous fuel consumption display 

signal

• Ambient air temperature display signal
• Average fuel consumption display signal
• Average vehicle speed display signal
• Possible driving distance display signal
• Engine speed signal
• Vehicle speed signal
• Meter effect signal

MWI-8

< SYSTEM DESCRIPTION >

METER SYSTEM

X: Applicable

ARRANGEMENT OF COMBINATION METER

System

Description

Signal source

Via unified 

meter and A/C 

amp.

Meter/gauge

Speedometer

Receives vehicle speed signal and indicates vehi-
cle speed.

ABS actuator and elec-
tric unit (control unit)

X

Tachometer

Receives engine speed signal and indicates en-
gine speed.

ECM

X

Fuel gauge

Receives fuel level sensor signal and indicates 
fuel level.

Fuel level sensor unit

X

Engine coolant tem-
perature gauge

Receives engine coolant temperature signal and 
indicates coolant temperature.

ECM

X

Warning lamp/
indicator lamp

Oil pressure warning 
lamp

Receives oil pressure warning lamp signal and il-
luminates warning lamp.

IPDM E/R

X

Master warning

Illuminates according to warning output on infor-
mation display.

—

X

Information 
display

Parking brake re-
lease warning

Receives parking brake switch signal and vehicle 
speed signal and displays warnings.

Parking brake switch

ABS actuator and elec-
tric unit (control unit)

X

Low fuel warning

Receives fuel gauge signal and displays warning 

if fuel level decreases to 14 

 (3 - 5/7 US gal, 3 - 

1/10 Imp gal) or less.

Fuel level sensor unit

X

Low washer fluid 
warning

Receives washer level switch signal and displays 
warning.

Washer level switch

Low outside tempera-
ture warning

Monitors ambient sensor signal and displays 
warning if ambient temperature decreases to 3

°

C 

(37

°

F) or less. (If enabled)

Ambient sensor

X

Door open warning

Receives door switch signals and displays warn-
ing.

BCM

X

Instantaneous fuel 
consumption

Calculates instantaneous fuel consumption based 
on received vehicle speed signals and fuel con-
sumption monitor signal and displays it.

ECM

X

ABS actuator and elec-
tric unit (control unit)

X

Average fuel con-
sumption

Calculates average fuel consumption in a reset-
to-reset interval based on received vehicle speed 
signals and fuel consumption monitor signal and 
displays it.

ECM

X

ABS actuator and elec-
tric unit (control unit)

X

Average vehicle 
speed

Calculates average vehicle speed in a reset-to-re-
set interval based on received vehicle speed sig-
nals and displays it.

ABS actuator and elec-
tric unit (control unit)

X

Travel time

Displays accumulated key switch ON time from 
reset to reset.

—

X

Travel distance

Calculates accumulated travel distance in a reset-
to-reset interval based on received vehicle speed 
signals and displays it.

ABS actuator and elec-
tric unit (control unit)

X

Possible driving dis-
tance

Calculates possible driving distance based on re-
ceived fuel consumption monitor signal, vehicle 
speed signals and fuel level sensor signal and dis-
plays it.

ECM

X

ABS actuator and elec-
tric unit (control unit)

X

Fuel level sensor unit

X

Ambient air tempera-
ture

Corrects ambient air temperature value based on 
received ambient sensor signals and displays it.

Ambient sensor

X

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METER SYSTEM

MWI-9

< SYSTEM DESCRIPTION >

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A.

VK50VE engine models

B.

VQ35HR engine models

C.

For U.S.A.

D.

Except for U.S.A.

JPNIA1107ZZ

MWI-10

< SYSTEM DESCRIPTION >

METER SYSTEM

METER SYSTEM : Component Parts Location

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JPNIA1104ZZ