Nissan Frontier D40. Manual — part 204
DEF-20
< 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)
DEF-21
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
N
O
P
Terminal Layout
INFOID:0000000005550695
Physical Values
INFOID:0000000005550696
LIIA2443E
DEF-22
< 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)
DEF-23
< ECU DIAGNOSIS >
C
D
E
F
G
H
I
J
K
M
A
B
DEF
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
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