2011 INFINITI QX56 ECU

BCS
BCM
BCS-41
< ECU DIAGNOSIS INFORMATION >
C
D E
F
G H
I
J
K L
B A
O P
N8
(V) Ground Power window
switch communica-
tion Input/
Output Ignition switch ON
9.0 - 10 V
9
(R) Ground Stop lamp switch 1 Input Stop lamp
switchOFF (Brake pedal is not
depressed)
0 V
ON (Brake pedal is de-
pressed) Battery voltage
11
(R) Ground
Light and rain sensor
serial link Input/
Output Ignition switch OFF 12 V
Ignition switch ON
8.0 - 9.0 V
14
(P/B) Ground Optical sensor Input Ignition switch
ONWhen bright outside of the
vehicle
Close to 5 V
When dark outside of the
vehicle Close to 0 V
16
(L/O) Ground Dimmer signal Output Ignition switch
ONEither of the following
conditions
 Lighting switch OFF
 The area around the ve-
hicle is bright (Shine a
light on the optical sen-
sor) 0 V
The area around the vehi-
cle is dark (Block the light
from the optical sensor) 12 V
17
(Y/G) Ground Sensor power sup-
ply
Output Ignition switch OFF, ACC 0 V
ON 5 V
18
(B/Y) Ground Receiver and sensor
ground Input Ignition switch ON 0 V
19
(BR) Ground Remote keyless en-
try receiver power
supply
Output Ignition switch OFF
Terminal No.
(Wire color) Description
Condition Va l u e
(Approx.)
Signal name Input/
Output
+ −
PKIA7023E
JPMIA0156GB
JMKIA3838GB
Revision: 2010 May2011 QX56

BCS-42
< ECU DIAGNOSIS INFORMATION >
BCM
20
(G/R) Ground Remote keyless en-
try receiver commu-
nication
InputWaiting
Signal receiving
21
(P) Ground NATS antenna amp. Input/
Output During waiting Ignition switch is pressed
while inserting the key into
the key slot. Just after pressing ignition
switch. Pointer of tester should move.
22
(W/B) Ground Remote keyless en-
try receiver RSSI
InputWaiting 0 V
Signal receiving
23
(GR/R) GroundSecurity indicator
lamp
OutputSecurity indica-
tor lamp ON 0 V
Blinking (Ignition switch
OFF)
11.0 - 12.0 V
OFF Battery voltage
24*
(SB) Ground Dongle link
Input/
Output Ignition switch OFF 5 V
25
(LG/R) Ground NATS antenna amp.
Input/
Output During waiting Ignition switch is pressed
while inserting the key into
the key slot. Just after pressing ignition
switch. Pointer of tester should
move.
29
(W) Ground Hazard switch Input Hazard switch OFF 12 V
ON 0 V
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
Signal name Input/
Output
+ −JMKIA3838GB
JMKIA3841GB
JMKIA3838GB
JPMIA0590GB
Revision: 2010 May2011 QX56

BCS
BCM
BCS-43
< ECU DIAGNOSIS INFORMATION >
C
D E
F
G H
I
J
K L
B A
O P
N30
(W/L) Ground Back door opener
switch
InputBack door
opener switch Pressed 0 V
Not pressed
1.0 - 1.5 V
31
(W/G) Ground Front door lock as-
sembly driver side
(Unlock sensor) Input Driver door LOCK status (Unlock sen-
sor switch OFF)
7.0 - 8.0 V
UNLOCK status (Unlock
sensor switch ON) 0 V
32
(LG) Ground Combination switch
OUTPUT 5 OutputCombination
switch All switches OFF
(Wiper volume dial 4)
7.0 - 8.0 V
Front fog lamp switch ON
(Wiper volume dial 4)
1.0 V
Rear wiper switch ON
(Wiper volume dial 4)
Any of the condition below
with all switches OFF
 Wiper volume dial 1
 Wiper volume dial 2
 Wiper volume dial 6
 Wiper volume dial 7
Terminal No.
(Wire color) Description
Condition Va l u e
(Approx.)
Signal name Input/
Output
+ −
JPMIA0012GB
PKIB4960J
PKIB4960J
PKIB4956J
Revision: 2010 May2011 QX56

BCS-44
< ECU DIAGNOSIS INFORMATION >
BCM
33
(Y) Ground
Combination switch
OUTPUT 4 Output
Combination
switch All switches OFF
(Wiper volume dial 4)
7.0 - 8.0 V
Lighting switch 1ST
(Wiper volume dial 4)
1.2 V
Lighting switch AUTO
(Wiper volume dial 4)
Rear wiper switch INT
(Wiper volume dial 4)
Any of the condition below
with all switches OFF
 Wiper volume dial 1
 Wiper volume dial 5
 Wiper volume dial 6
34
(W) Ground Combination switch
OUTPUT 3 OutputCombination
switch All switches OFF
(Wiper volume dial 4)
7.0 - 8.0 V
Lighting switch 2ND
(Wiper volume dial 4)
1.2 V
Lighting switch HI
(Wiper volume dial 4)
Rear washer switch ON
(Wiper volume dial 4)
Any of the condition below
with all switches OFF
 Wiper volume dial 1
 Wiper volume dial 2
 Wiper volume dial 3
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
Signal name Input/
Output
+ −
PKIB4960J
PKIB4958J
PKIB4960J
PKIB4958J
Revision: 2010 May2011 QX56

BCS
BCM
BCS-45
< ECU DIAGNOSIS INFORMATION >
C
D E
F
G H
I
J
K L
B A
O P
N
35
(R/W) Ground
Combination switch
OUTPUT 2 OutputCombination
switch
(Wiper volume
dial 4) All switches OFF
7.0 - 8.0 V
Lighting switch 2ND
1.2 V
Lighting switch PASS
Front wiper switch AUTO
Front wiper switch HI
36
(SB) Ground Combination switch
OUTPUT 1
OutputCombination
switch
(Wiper volume
dial 4) All switches OFF
7.0 - 8.0 V
Turn signal switch RH
1.2 V
Turn signal switch LH
Front wiper switch LO
Front wiper switch MIST
Front washer switch ON
37
(G/Y) Ground P position Input Selector lever P position 0 V
Any position other than P 12 V
39
(L) Ground CAN-H Input/
Output ——
40
(P) Ground CAN-L Input/
Output ——
43
(Y/L) Ground Back door switch Input Back door
switchOFF
(When back door closed)
9.0 - 10.0 V
ON
(When back door opened) 0 V
Terminal No.
(Wire color) Description
Condition Va l u e
(Approx.)
Signal name Input/
Output
+ −
PKIB4960J
PKIB4958J
PKIB4960J
PKIB4958J
JPMIA0593GB
Revision: 2010 May2011 QX56

BCS-46
< ECU DIAGNOSIS INFORMATION >
BCM
44
(G/W) Ground Rear wiper stop po-
sition
InputIgnition switch
ON Rear wiper stop position 12 V
Any position other than
rear wiper stop position
0 V
45
(W) Ground Passenger door
switch
InputPassenger door
switch OFF (When passenger
door closed)
7.0 - 8.0 V
ON (When passenger
door opened) 0 V
46
(GR) Ground Rear RH door switch Input Rear RH door
switchOFF (When rear RH door
closed)
7.0 - 8.0 V
ON (When rear RH door
opened) 0 V
47
(GR/R) Ground Driver door switch Input
Driver door
switchOFF (When driver door
closed)
7.0 - 8.0 V
ON (When driver door
opened) 0 V
48
(O) Ground Rear LH door switch Input
Rear LH door
switchOFF (When rear LH door
closed)
7.0 - 8.0 V
ON (When rear door LH
opened) 0 V
49
(BR/Y) Ground Luggage room lamp Output
Luggage room
lampOFF 12 V
ON 0 V
51
(W/R) Ground
Back door request
switch Input
Back door re-
quest switch ON (Pressed) 0 V
OFF (Not pressed) 12 V
54
(L) Ground Rear wiper Output Rear wiper OFF (Stopped) 0 V
ON (Activated) 12 V
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
Signal name Input/
Output
+ −
PKIB4960J
PKIB4960J
PKIB4960J
PKIB4960J
Revision: 2010 May2011 QX56

BCS
BCM
BCS-47
< ECU DIAGNOSIS INFORMATION >
C
D E
F
G H
I
J
K L
B A
O P
N
55
(G) Ground Rear door UNLOCK Output Rear door UNLOCK (Actuator is acti-
vated)
12 V
Other then UNLOCK (Ac-
tuator is not activated) 0 V
56
(W/R) Ground Interior room lamp
power supply OutputInterior room lamp battery saver is activated.
(Cuts the interior room
lamp power supply) 0 V
Interior room lamp battery saver is not acti-
vated.
(Outputs the interior room lamp power sup-
ply) 12 V
57
(LG) Ground Battery power sup-
ply
Input Ignition switch OFF Battery voltage
59
(G) Ground Passenger door UN-
LOCK
Output Passenger door UNLOCK (Actuator is acti-
vated)
12 V
Other then UNLOCK (Ac-
tuator is not activated) 0 V
60
(G) Ground Turn signal LH Output Ignition switch
ONTurn signal switch OFF 0 V
Turn signal switch LH
6.0 - 7.0 V
61
(G/Y) Ground Turn signal RH Output Ignition switch
ONTurn signal switch OFF 0 V
Turn signal switch RH
6.0 - 7.0 V
62
(R) Ground Step lamp Output Step lamp ON 0 V
OFF 12 V
63
(BR) Ground Interior room lamp
timer control
OutputInterior room
lamp OFF 12 V
ON 0 V
64
(GR/R) Ground Cranking request input
Ignition switch
ONEngine stopped (Selector
lever is in P position)
0 V
Engine stopped (Selector
lever is not in P position) 12 V
Engine running 12 V
65
(R) Ground All doors, fuel lid
LOCK
Output All doors, fuel lid LOCK (Actuator is activat-
ed)
12 V
Other then LOCK (Actua-
tor is not activated) 0 V
Terminal No.
(Wire color) Description
Condition
Va l u e
(Approx.)
Signal name Input/
Output
+ −
PKIC6370E
PKIC6370E
Revision: 2010 May2011 QX56

BCS-48
< ECU DIAGNOSIS INFORMATION >
BCM
66
(V) Ground Driver door, fuel lid
UNLOCK OutputDriver door, fuel
lid UNLOCK (Actuator is acti-
vated)
12 V
Other then UNLOCK (Ac-
tuator is not activated) 0 V
67
(B) Ground Ground Output Ignition switch ON 0 V
68
(Y) Ground P/W power supply
(IGN)
Output Ignition switch ON 12 V
69
(W) Ground
P/W power supply
(BAT) Output Ignition switch OFF 12 V
70
(Y) Ground Battery power sup-
ply Input Ignition switch OFF Battery voltage
72
(P) Ground Puddle lamp control Output Puddle lamp OFF 12 V
ON 0 V
73
(W) Ground ON indicator lamp Output Ignition switch OFF (LOCK indicator is
not illuminated)
Battery voltage
ON 0 V
74
(Y/B) Ground Trailer turn signal
RH control
OutputIgnition switch
ON Turn signal switch OFF Battery voltage
Turn signal switch RH
6.0 - 7.0 V
75
(LG/R) Ground
Driver door request
switch Input
Driver door re-
quest switch ON (Pressed) 0 V
OFF (Not pressed) 12 V
76
(P/L) Ground
Passenger door re-
quest switch Input
Passenger door
request switch ON (Pressed) 0 V
OFF (Not pressed) 12 V
77
(O/L) Ground Trailer turn signal LH
control
OutputIgnition switch
ON Turn signal switch OFF Battery voltage
Turn signal switch LH
6.0 - 7.0 V
Te r m i n a l N o .
(Wire color) Description
Condition Va l u e
(Approx.)
Signal name Input/
Output
+ −
PKIC6370E
PKIC6370E
Revision: 2010 May2011 QX56