Infiniti G37 Coupe. Manual — part 917

MWI-14

< FUNCTION DIAGNOSIS >

METER SYSTEM

TACHOMETER : Component Parts Location

INFOID:0000000001672042

TACHOMETER : Component Description

INFOID:0000000001606613

JPNIA0501ZZ

1.

Unified meter and A/C amp.

2.

BCM

3.

IPDM E/R

4.

Oil pressure switch

5.

Ambient sensor

6.

Combination meter

7.

Fuel level sensor unit and fuel pump
(main)

8.

Fuel level sensor unit (sub)

A.

Behind cluster lid C

B.

Oil pan (upper) RH side

C.

Condenser (front)

D.

Rear seat (lower right)

E.

Rear seat (lower left)

Unit

Description

Combination meter

Indicates the engine speed according to the engine speed signal received from the unified meter
and A/C amp. by means of communication line.

Unified meter and A/C amp.

Transmits the engine speed signal received from ECM with CAN communication line to the com-
bination meter by means of communication line.

ECM

Transmits the engine speed signal to the unified meter and A/C amp. with CAN communication
line.

MWI

METER SYSTEM

MWI-15

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

ENGINE COOLANT TEMPERATURE GAUGE

ENGINE COOLANT TEMPERATURE GAUGE : System Diagram

INFOID:0000000001606614

ENGINE COOLANT TEMPERATURE GAUGE : System Description

INFOID:0000000001606615

• ECM converses a signal from engine coolant temperature sensor to engine coolant temperature signal, and

transmits to unified meter and A/C amp. with CAN communication line.

• Unified meter and A/C amp. transmits engine coolant temperature signal to combination meter with commu-

nication line.

• Combination meter converses engine coolant temperature signal to the angle signal, and commands to

engine coolant temperature gauge.

JSNIA0162GB

MWI-16

< FUNCTION DIAGNOSIS >

METER SYSTEM

ENGINE COOLANT TEMPERATURE GAUGE : Component Parts Location

INFOID:0000000001672043

ENGINE COOLANT TEMPERATURE GAUGE : Component Description

INFOID:0000000001606617

JPNIA0501ZZ

1.

Unified meter and A/C amp.

2.

BCM

3.

IPDM E/R

4.

Oil pressure switch

5.

Ambient sensor

6.

Combination meter

7.

Fuel level sensor unit and fuel pump
(main)

8.

Fuel level sensor unit (sub)

A.

Behind cluster lid C

B.

Oil pan (upper) RH side

C.

Condenser (front)

D.

Rear seat (lower right)

E.

Rear seat (lower left)

Unit

Description

Combination meter

Indicates the water temperature gauge according to the engine coolant temperature signal re-
ceived from the unified meter and A/C amp. by means of communication line.

MWI

METER SYSTEM

MWI-17

< FUNCTION DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

FUEL GAUGE

FUEL GAUGE : System Diagram

INFOID:0000000001606618

FUEL GAUGE : System Description

INFOID:0000000001606619

CONTROL OUTLINE

• The unified meter and A/C amp. reads the fuel level sensor signal from the fuel gauge unit and transmits it to

the combination meter with the communication line.

• The combination meter indicates the fuel level on the fuel gauge according to the received fuel level sensor

signal.

REFUEL CONTROL

The unit judges that the driver is refueling the vehicle and accelerates the fuel gauge needle movement if the
fuel level changes by 15 (4 US gal, 3-3/10 Imp gal) or more.

Unified meter and A/C amp.

Transmits the engine coolant temperature signal received from ECM with CAN communication
line to the combination meter by means of communication line.

ECM

Transmits the engine coolant temperature signal to the unified meter and A/C amp. with CAN
communication line.

Unit

Description

JSNIA0612GB