Nissan Xterra. Manual - part 558

BCM (BODY CONTROL MODULE)

PWC-35

< ECU DIAGNOSIS INFORMATION >

C

D

E

F

G

H

I

J

L

M

A

B

PWC

N

O

P

Terminal

Wire 

color

Signal name

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) and back 
door key cylinder 
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) and back 
door key cylinder 
switch (lock)

Input

OFF

ON (open)

Momentary 1.5V

OFF (closed)

0V

9

LG

Stop lamp switch

Input

OFF

Brake pedal depressed

Battery voltage

Brake pedal released

0V

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

Input

OFF

ON (open)

0V

OFF (closed)

Battery voltage

13

L

Rear door switch RH

Input

OFF

ON (open)

0V

OFF (closed)

Battery voltage

SKIA5291E

SKIA5292E

SKIA5291E

SKIA5292E

PWC-36

< ECU DIAGNOSIS INFORMATION >

BCM (BODY CONTROL MODULE)

15

W

Tire pressure warning 
check connector

Input

OFF

—

5V

18

BR

Remote keyless entry 
receiver and optical 
sensor (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)

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 for approx. 1 second, then 

return to battery voltage.

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 for approx. 1 second, then 

return to battery voltage.

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

R

Off-road lamps switch

Input

ON

ON

0V

OFF

5V

Terminal

Wire 

color

Signal name

Signal 

input/

output

Measuring condition

Reference value or waveform

(Approx.)

Ignition 

switch

Operation or condition

LIIA1893E

LIIA1894E

LIIA1895E

BCM (BODY CONTROL MODULE)

PWC-37

< ECU DIAGNOSIS INFORMATION >

C

D

E

F

G

H

I

J

L

M

A

B

PWC

N

O

P

32

BG

Combination switch 
output 5

Output

ON

Lighting, turn, wiper OFF
Wiper dial position 4

33

GR

Combination switch 
output 4

Output

ON

Lighting, turn, wiper OFF
Wiper dial position 4

34

G

Combination switch 
output 3

Output

ON

Lighting, turn, wiper OFF
Wiper dial position 4

35

BR

Combination switch 
output 2

Output

ON

Lighting, turn, wiper OFF
Wiper dial position 4

36

LG

Combination switch 
output 1

37

B

Key switch and key 
lock solenoid

Input

OFF

Key inserted

Battery voltage

Key removed

0V

38

W/R

Ignition switch (ON) 

Input

ON

—

Battery voltage

39

L

CAN-H

—

—

—

—

40

P

CAN-L

—

—

—

—

41

Y

Rear window defogger 
switch

Input

ON

Rear window defogger switch 
ON

0V

Rear window defogger switch 
OFF

5V

42

L

Off-road lamps

Output

ON

Off-road 
lamps switch

ON 0V

OFF Battery 

voltage

43

Y

Back door switch

Input

OFF

ON (open)

0V

OFF (closed)

Battery voltage

Terminal

Wire 

color

Signal name

Signal 

input/

output

Measuring condition

Reference value or waveform

(Approx.)

Ignition 

switch

Operation or condition

SKIA5291E

SKIA5292E

SKIA5291E

SKIA5292E

PWC-38

< ECU DIAGNOSIS INFORMATION >

BCM (BODY CONTROL MODULE)

44

BG

Rear wiper auto stop 
switch 

Input

ON

Rise up position (rear wiper 
arm on stopper)

0V

A Position (full clockwise stop 
position)

Battery voltage

Forward sweep (counterclock-
wise direction)

Fluctuating

B Position (full counterclock-
wise stop position)

0V

Reverse sweep (clockwise di-
rection)

Fluctuating

45

V

Lock switch 

Input

OFF

ON (lock)

0V

OFF

Battery voltage

46

LG

Unlock switch 

Input

OFF

ON (unlock)

0V

OFF

Battery voltage

47

GR

Front door switch LH

Input

OFF

ON (open)

0V

OFF (closed)

Battery voltage

48

P

Rear door switch LH

Input

OFF

ON (open)

0V

OFF (closed)

Battery voltage

49

L

Cargo lamp

Output

OFF

Any door open (ON)

0V

All doors closed (OFF)

Battery voltage

50

W

Off-road lamps relay

Output

ON

Off-road 
lamps switch

ON 0V

OFF

Battery voltage

51

BG

Trailer turn signal 
(right)

Output

ON

Turn right ON

52

LG

Trailer turn signal (left)

Output

ON

Turn left ON

55

W

Rear wiper output cir-
cuit 1

Output

ON

OFF

0

ON

Battery voltage

56

R/Y

Battery saver output

Output

OFF

10 minutes after ignition 
switch is turned OFF

0V

ON

—

Battery voltage

57

R/Y

Battery power supply

Input

OFF

—

Battery voltage

58

W

Optical sensor

Input

ON

When optical sensor is illumi-
nated

3.1V or more

When optical sensor is not illu-
minated

0.6V or less

Terminal

Wire 

color

Signal name

Signal 

input/

output

Measuring condition

Reference value or waveform

(Approx.)

Ignition 

switch

Operation or condition

SKIA3009J

SKIA3009J