Infiniti G37 Coupe. Manual - part 234

BCS-54

< ECU DIAGNOSIS >

BCM (BODY CONTROL MODULE)

74

(SB)

Ground

Passenger door an-
tenna (-)

Output

When the pas-
senger door re-
quest switch is 
operated with ig-
nition switch OFF

When Intelligent Key is in 
the antenna detection area

When Intelligent Key is not 
in the antenna detection 
area

75

(BR)

Ground

Passenger door an-
tenna (+)

Output

When the pas-
senger door re-
quest switch is 
operated with ig-
nition switch OFF

When Intelligent Key is in 
the antenna detection area

When Intelligent Key is not 
in the antenna detection 
area

76

(V)

Ground

Driver door antenna 
(-)

Output

When the driver 
door request 
switch is operat-
ed with ignition 
switch OFF

When Intelligent Key is in 
the antenna detection area

When Intelligent Key is not 
in the antenna detection 
area

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/ 

Output

+

–

JMKIA0062GB

JMKIA0063GB

JMKIA0062GB

JMKIA0063GB

JMKIA0062GB

JMKIA0063GB

BCS

BCM (BODY CONTROL MODULE)

BCS-55

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

77

(LG)

Ground

Driver door antenna 
(+)

Output

When the driver 
door request 
switch is operat-
ed with ignition 
switch OFF

When Intelligent Key is in 
the antenna detection area

When Intelligent Key is not 
in the antenna detection 
area

78

(Y)

Ground

Room antenna (-) (in-
strument panel)

Output

Ignition switch 
OFF

When Intelligent Key is in 
the passenger compart-
ment

When Intelligent Key is not 
in the passenger compart-
ment

79

(BR)

Ground

Room antenna (+) 
(instrument panel)

Output

Ignition switch 
OFF

When Intelligent Key is in 
the passenger compart-
ment

When Intelligent Key is not 
in the passenger compart-
ment

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/ 

Output

+

–

JMKIA0062GB

JMKIA0063GB

JMKIA0062GB

JMKIA0063GB

JMKIA0062GB

JMKIA0063GB

BCS-56

< ECU DIAGNOSIS >

BCM (BODY CONTROL MODULE)

80

(GR)

Ground

NATS antenna amp 
(built in key slot)

Input/

Output

During waiting

Ignition switch is pressed 
while inserting the Intelli-
gent Key into the key slot.

Just after pressing ignition 
switch. Pointer of tester should 
move.

81

(W)

Ground

NATS antenna amp 
(built in key slot)

Input/

Output

During waiting

Ignition switch is pressed 
while inserting the Intelli-
gent Key into the key slot.

Just after pressing ignition 
switch. Pointer of tester should 
move.

82

(R)

Ground

Ignition relay [fuse 
block (J/B)] control

Output

Ignition switch

OFF or ACC

0 V

ON

Battery voltage

83

(Y)

Ground

Remote keyless entry 
receiver signal

Input/

Output

During waiting

When operating either button on Intelligent Key

87

(BR)

Ground

Combination switch 
INPUT 5

Input

Combination 
switch

All switch OFF
(Wiper intermittent dial 4)

1.4 V

Front fog lamp switch ON
(Wiper intermittent dial 4)

1.3 V

Any of the conditions below 
with all switch OFF
• Wiper intermittent dial 1
• Wiper intermittent dial 2
• Wiper intermittent dial 6
• Wiper intermittent dial 7

1.3 V

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/ 

Output

+

–

JMKIA0064GB

JMKIA0065GB

JPMIA0041GB

JPMIA0037GB

JPMIA0040GB

BCS

BCM (BODY CONTROL MODULE)

BCS-57

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

88

(O)

Ground

Combination switch 
INPUT 3

Input

Combination 
switch

All switch OFF
(Wiper intermittent dial 4)

1.4 V

Lighting switch HI
(Wiper intermittent dial 4)

1.3 V

Lighting switch 2ND
(Wiper intermittent dial 4)

1.3 V

Any of the conditions below 
with all switch OFF
• Wiper intermittent dial 1
• Wiper intermittent dial 2
• Wiper intermittent dial 3

1.3 V

89

(BR)

Ground

Push-button ignition 
switch (push switch)

Input

Push-button igni-
tion switch (push 
switch)

Pressed

0 V

Not pressed

Battery voltage

90

(P)

Ground

CAN - L

Input/ 

Output

—

—

91

(L)

Ground

CAN - H

Input/ 

Output

—

—

92

(LG)

Ground

Key slot illumination

Output

Key slot illumina-
tion

OFF

0 V

Blinking

6.5 V

ON

Battery voltage

Terminal No.

(Wire color)

Description

Condition

Value

(Approx.)

Signal name

Input/ 

Output

+

–

JPMIA0041GB

JPMIA0036GB

JPMIA0037GB

JPMIA0040GB

JPMIA0015GB