Infiniti G37 Coupe. Manual - part 812

INL-82

< ECU DIAGNOSIS >

COMBINATION METER

16

(B)

Ground

Meter control switch ground

—

Ignition 
switch 
ON

—

0  V

21

(R)

Ground

Ignition signal

Input

Ignition 
switch 
ON

—

12  V

22

(B)

Ground

Ground

—

Ignition 
switch 
ON

—

0  V

24

(BR)

Ground

Communication signal 
(LCD

→

 AMP.)

Output

Ignition 
switch 
ON

—

25

(Y)

Ground

Communication signal 
(AMP.

→

 LCD)

Input

Ignition 
switch 
ON

—

26

(R)

Ground

Vehicle speed signal
(8-pulse)

Input

Ignition 
switch 
ON

Speedometer operated
[When vehicle speed is ap-
prox. 40 km/h (25 MPH)]

NOTE:
The maximum voltage varies de-
pending on the specification 
(destination unit).

27

(O)

Ground

Parking brake switch signal

Input

Ignition 
switch 
ON

Parking brake applied

0 V

Parking brake released

28

(LG)

Ground

Brake fluid level switch sig-
nal

Input

Ignition 
switch 
ON

Brake fluid level is normal.

The brake fluid level is low-
er than the low level

0 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

JSNIA0028GB

JSNIA0027GB

JSNIA0012GB

JSNIA0007GB

JSNIA0008GB

COMBINATION METER

INL-83

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

*1: With A/T models

*2: With M/T models

29

(L

*1

 or 

LG

*2

)

Ground

Seat belt buckle switch sig-
nal (driver side)

Input

Ignition 
switch 
ON

When driver seat belt is fas-
tened

12 V

When driver seat belt is un-
fastened

0 V

30

(G)

Ground

Seat belt buckle switch sig-
nal (passenger side)

Input

Ignition 
switch 
ON

• When getting in the pas-

senger seat

• When passenger seat 

belt is fastened

12 V

• When getting in the pas-

senger seat

• When passenger seat 

belt is unfastened

0 V

31

(L)

Ground

Washer level switch signal

Input

Ignition 
switch 
ON

Washer level switch ON

0 V

Washer level switch OFF

5 V

34

(R)

Ground

Illumination control signal

Output

Ignition 
switch 
ON

Lighting switch ON, then 
operate the illumination 
control switch.

NOTE:
When brightness level is midway

36

(LG)

16

(B)

Select switch signal

Input

Ignition 
switch 
ON

When  

is 

pressed

0 V

Other than the above

5 V

37

(SB)

16

(B)

Enter switch signal

Input

Ignition 
switch 
ON

When 

 is pressed

0 V

Other than the above

5 V

38

(L)

16

(B)

Trip A/B reset switch signal

Input

Ignition 
switch 
ON

When trip A/B reset switch 
is pressed

0 V

Other than the above

5 V

39

(P)

16

(B)

Illumination control switch 
signal (–)

Input

Ignition 
switch 
ON

When 

 switch is 

pressed

0 V

Other than the above

5 V

40

(O)

16

(B)

Illumination control switch 
signal (+)

Input

Ignition 
switch 
ON

When  

switch 

is 

pressed

0 V

Other than the above

5 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

JSNIA0010GB

INL-84

< ECU DIAGNOSIS >

COMBINATION METER

Wiring Diagram - METER -

INFOID:0000000001830728

JCNWA0436GB

COMBINATION METER

INL-85

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

K

M

A

B

INL

N

O

P

JCNWA0437GB