Nissan Frontier D40. Manual - part 970

SEC-36

< ECU DIAGNOSIS >

BCM (BODY CONTROL MODULE)

FAN ON SIG

Blower fan motor switch OFF

OFF

Blower fan motor switch ON (other than OFF)

ON

AIR COND SW

Compressor ON is not requested from auto amp.
(A/C indicator OFF, blower fan motor switch OFF or etc.)

OFF

Compressor ON is requested from auto amp.
(A/C indicator ON and blower fan motor switch ON).

ON

OIL PRESS SW

• Ignition switch OFF or ACC
• Engine running

OFF

Ignition switch ON

ON

AIR PRESS FL

Ignition switch ON (Only when the signal from the transmitter is re-
ceived)

Air pressure of front LH tire

AIR PRESS FR

Ignition switch ON (Only when the signal from the transmitter is re-
ceived)

Air pressure of front RH tire

AIR PRESS RR

Ignition switch ON (Only when the signal from the transmitter is re-
ceived)

Air pressure of rear RH tire

AIR PRESS RL

Ignition switch ON (Only when the signal from the transmitter is re-
ceived)

Air pressure of rear LH tire

ID REGST FL1

ID of front LH tire transmitter is registered

DONE

ID of front LH tire transmitter is not registered

YET

ID REGST FR1

ID of front RH tire transmitter is registered

DONE

ID of front RH tire transmitter is not registered

YET

ID REGST RR1

ID of rear RH tire transmitter is registered

DONE

ID of rear RH tire transmitter is not registered

YET

ID REGST RL1

ID of rear LH tire transmitter is registered

DONE

ID of rear LH tire transmitter is not registered

YET

WARNING LAMP

Tire pressure indicator OFF

OFF

Tire pressure indicator ON

ON

BUZZER

Tire pressure warning alarm is not sounding

OFF

Tire pressure warning alarm is sounding

ON

Monitor Item

Condition

Value/Status

BCM (BODY CONTROL MODULE)

SEC-37

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

Terminal Layout

INFOID:0000000005549839

Physical Values

INFOID:0000000005549840

LIIA2443E

SEC-38

< ECU DIAGNOSIS >

BCM (BODY CONTROL MODULE)

Terminal

Wire 

color

Item

Signal 

input/

output

Measuring condition

Reference value or waveform

(Approx.)

Ignition 

switch

Operation or condition

1

BR

Ignition keyhole illumi-
nation

Output

OFF

Door is locked (SW OFF)

Battery voltage

Door is unlocked (SW ON)

0V

2

P

Combination switch 
input 5

Input

ON

Lighting, turn, wiper OFF
Wiper dial position 4

3

SB

Combination switch 
input 4

Input

ON

Lighting, turn, wiper OFF
Wiper dial position 4

4

V

Combination switch 
input 3

Input

ON

Lighting, turn, wiper OFF
Wiper dial position 4

5

L

Combination switch 
input 2

Input

ON

Lighting, turn, wiper OFF
Wiper dial position 4

6

R

Combination switch 
input 1

7

GR

Front door lock as-
sembly LH (key cylin-
der switch) unlock

Input

OFF

ON (open, 2nd turn)

Momentary 1.5V

OFF (closed)

0V

8

SB

Front door lock as-
sembly LH (key cylin-
der switch) lock

Input

On (open)

Momentary 1.5V

OFF (closed)

0V

9

Y

Rear window defogger 
switch

Input

ON

Rear window defogger switch 
ON

0V

Rear window defogger switch 
OFF

5V

11

G/B

Ignition switch (ACC 
or ON)

Input

ACC or 

ON

Ignition switch ACC or ON

Battery voltage

12

LG

Front door switch RH 
(All)

Input

OFF

ON (open)

0V

Rear door switch up-
per RH (King Cab)

OFF (closed)

Battery voltage

Rear door switch low-
er RH (King Cab)

SKIA5291E

SKIA5292E

SKIA5291E

SKIA5292E

BCM (BODY CONTROL MODULE)

SEC-39

< ECU DIAGNOSIS >

C

D

E

F

G

H

I

J

L

M

A

B

SEC

N

O

P

13

L

Rear door switch RH 
(Crew Cab)

Input

OFF

ON (open)

0V

OFF (closed)

Battery voltage

15

W

Tire pressure warning 
check connector

Input

OFF

—

5V

18

BR

Remote keyless entry 
receiver (Ground)

Output

OFF

—

0V

19

V

Remote keyless entry 
receiver (power sup-
ply)

Output

OFF

Ignition switch OFF

20

G

Remote keyless entry 
receiver signal (Sig-
nal)

Input

OFF

Stand-by (keyfob buttons re-
leased)

When remote keyless entry 
receiver receives signal from 
keyfob (keyfob buttons 
pressed)

21

GR

NATS antenna amp.

Input

OFF 

→

 

ON

Ignition switch (OFF 

→

 ON)

Just after turning ignition switch 

ON: Pointer of tester should 

move.

23

G

Security indicator 
lamp

Output

OFF

Goes OFF 

→

 illuminates (Ev-

ery 2.4 seconds)

Battery voltage 

→

 0V

25

BR

NATS antenna amp.

Input

OFF 

→

 

ON

Ignition switch (OFF 

→

 ON)

Just after turning ignition switch 

ON: Pointer of tester should 

move.

27

W

Compressor ON sig-
nal

Input

ON

A/C switch OFF

5V

A/C switch ON

0V

28

R

Front blower monitor

Input

ON

Front blower motor OFF

Battery voltage

Front blower motor ON

0V

29

G

Hazard switch

Input

OFF

ON

0V

OFF

5V

31

GR

Cargo lamp switch

Input

OFF

ON

0V

OFF

Battery voltage

Terminal

Wire 

color

Item

Signal 

input/

output

Measuring condition

Reference value or waveform

(Approx.)

Ignition 

switch

Operation or condition

LIIA1893E

LIIA1894E

LIIA1895E