Infiniti G37 Coupe. Manual — part 1394

WCS-48

< ECU DIAGNOSIS >

UNIFIED METER AND A/C AMP.

PHYSICAL VALUES

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

4

(P)

Ground

Stop lamp switch signal

Input

Ignition
switch
OFF

Brake pedal is depressed

12 V

Other than the above

0 V

5

(L)

Ground

Manual mode shift up sig-
nal

Input

Ignition
switch
ON

Selector lever up position

0 V

Other than the above

12 V

6

(O)

Ground

Paddle shifter up signal

Input

Ignition
switch
ON

Paddle shifter up operation

0 V

Other than the above

12 V

7

(GR)

Ground

Communication signal
(AMP.

→

METER)

Output

Ignition
switch
ON

—

8

(L)

Ground

Vehicle speed signal output
(2-pulse)

Output

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).

9

(SB)

Ground

Seat belt buckle switch sig-
nal (driver side)

Input

Ignition
switch
ON

When seat belt (driver side)
is fastened

12 V

When seat belt (driver side)
is unfastened

0 V

10

(W)

Ground

Manual mode signal

Input

Ignition
switch
ON

Selector lever DS position

0 V

Other than the above

12 V

11

(G)

Ground

Not manual mode signal

Input

Ignition
switch
ON

Selector lever DS position

12 V

Other than the above

0 V

14

(BR)

Ground

Communication signal
(LCD

→

AMP.)

Input

Ignition
switch
ON

—

25

(V)

Ground

Manual mode shift down
signal

Input

Ignition
switch
ON

Selector lever down posi-
tion

0 V

Other than the above

12 V

26

(G)

Ground

Paddle shift down signal

Input

Ignition
switch
ON

Paddle shifter down opera-
tion

0 V

Other than the above

12 V

SKIA3362E

JSNIA0015GB

JSNIA0028GB

WCS

UNIFIED METER AND A/C AMP.

WCS-49

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

27

(LG)

Ground

Communication signal
(METER

→

AMP.)

Input

Ignition
switch
ON

—

28

(R)

Ground

Vehicle speed signal output
(8-pulse)

Output

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).

30

(V)

Ground

Parking brake switch signal

Input

Ignition
switch
ON

Parking brake applied

0 V

Parking brake released

34

(Y)

Ground

Communication signal
(AMP.

→

LCD)

Output

Ignition
switch
ON

—

41

(L)

Ground

ACC power supply

Input

Ignition
switch
ACC

—

Battery voltage

42

(BR)

Ground

Fuel level sensor signal

Input

Ignition
switch
ON

—

45

(V)

Ground

Ambient sensor signal

Input

—

—

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

SKIA3361E

JSNIA0012GB

JSNIA0007GB

JSNIA0027GB

JSNIA0013GB

JSNIA0014GB

WCS-50

< ECU DIAGNOSIS >

UNIFIED METER AND A/C AMP.

53

(W)

Ground

Ignition signal

Input

Ignition
switch
ON

—

Battery voltage

54

(Y)

Ground

Battery power supply

Input

Ignition
switch
OFF

—

Battery voltage

55

(B)

Ground

Ground

—

Ignition
switch
ON

—

0 V

56

(L)

Ground

CAN-H

—

—

—

—

57

(BR)

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

58

(Y)

Ground

Fuel level sensor signal
ground

—

Ignition
switch
ON

—

0 V

61

(R)

Ground

Ambient sensor signal
ground

—

Ignition
switch
ON

—

0 V

71

(GR)

Ground

Ground

—

Ignition
switch
ON

—

0 V

72

(P)

Ground

CAN-L

—

—

—

—

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

+

–

Signal name

Input/

Output

JSNIA0008GB

WCS

UNIFIED METER AND A/C AMP.

WCS-51

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Wiring Diagram - METER -

INFOID:0000000001696930

JCNWA0436GB