Infiniti G37 Coupe. Manual — part 1423
WT-64
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
111
(Y)
Ground
Steering lock unit
communication
Input/
Output
Steering lock
LOCK status
Battery voltage
LOCK or UNLOCK
For 15 seconds after UN-
LOCK
Battery voltage
15 seconds or later after
UNLOCK
0 V
113
(P)
Ground
Optical sensor signal
Input
Ignition switch
ON
When bright outside of the
vehicle
Close to 5 V
When dark outside of the
vehicle
Close to 0 V
114
(R)
Ground
Clutch interlock
switch
Input
Clutch interlock
switch
OFF (Clutch pedal is not
depressed)
0 V
ON (Clutch pedal is de-
pressed)
Battery voltage
116
(SB)
Ground
Stop lamp switch 1
Input
—
Battery voltage
118
(BR)
Ground
Stop lamp switch 2
Input
Stop lamp switch
OFF (Brake pedal is not
depressed)
0 V
ON (Brake pedal is de-
pressed)
Battery voltage
ICC brake hold
relay (With ICC)
OFF
0 V
ON
Battery voltage
119
(SB)
Ground
Front door lock as-
sembly driver side
(unlock sensor)
Input
Driver door
LOCK status
11.8 V
UNLOCK status
0 V
121
(SB)
Ground
Key slot switch
Input
When Intelligent Key is inserted into key slot
Battery voltage
When Intelligent Key is not inserted into key slot
0 V
122
(P)
Ground
ACC feedback signal
Input
Ignition switch
OFF
0 V
ACC or ON
Battery voltage
123
(W)
Ground
IGN feedback signal
Input
Ignition switch
OFF or ACC
0 V
ON
Battery voltage
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
–
JMKIA0066GB
JPMIA0011GB
BCM (BODY CONTROL MODULE)
WT-65
< ECU DIAGNOSIS >
C
D
F
G
H
I
J
K
L
M
A
B
WT
N
O
P
124
(LG)
Ground
Passenger door
switch
Input
Passenger door
switch
OFF (When passenger
door closes)
11.8 V
ON (When passenger door
opens)
0 V
129
(O)
Ground
Trunk lid opener can-
cel switch
Input
Trunk lid opener
cancel switch
CANCEL
1.1 V
ON
0 V
132
(V)
Ground
Power window switch
communication
Input/
Output
Ignition switch ON
10.2 V
Ignition switch OFF or ACC
0 V
133
(L)
Ground
Push-button ignition
switch illumination
Output
Push-button igni-
tion switch illumi-
nation
ON (When tail lamps OFF)
5.5 V
ON (When tail lamps ON)
NOTE:
The pulse width of this wave is
varied by the illumination bright-
ening/dimming level.
OFF
0 V
134
(LG)
Ground
LOCK indicator lamp
Output
LOCK indicator
lamp
ON
0 V
OFF
Battery voltage
137
(O)
Ground
Receiver and sensor
ground
Input
Ignition switch ON
0 V
138
(V)
Ground
Receiver and sensor
power supply output
Output
Ignition switch
OFF
0 V
ACC or ON
5.0 V
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
–
JPMIA0011GB
JPMIA0012GB
JPMIA0013GB
JPMIA0159GB
WT-66
< ECU DIAGNOSIS >
BCM (BODY CONTROL MODULE)
139
(L)
Ground
Tire pressure receiv-
er signal
Input/
Output
Ignition switch
ON
Standby state
When receiving the signal
from the transmitter
140
(GR)
Ground
Selector lever P/N
position signal
Input
Selector lever
P or N position
12.0 V
Except P and N positions
0 V
141
(R)
Ground
Security indicator sig-
nal
Output
Security indicator
ON
0 V
Blinking
11.3 V
OFF
Battery voltage
142
(BR)
Ground
Combination switch
OUTPUT 5
Output
Combination
switch
(Wiper intermit-
tent dial 4)
All switch OFF
0 V
Lighting switch 1ST
10.7 V
Lighting switch HI
Lighting switch 2ND
Turn signal switch RH
143
(V)
Ground
Combination switch
OUTPUT 1
Output
Combination
switch
All switch OFF
(Wiper intermittent dial 4)
0 V
Front wiper switch HI
(Wiper intermittent dial 4)
10.7 V
Any of the conditions below
with all switch OFF
• Wiper intermittent dial 1
• Wiper intermittent dial 2
• Wiper intermittent dial 3
• Wiper intermittent dial 6
• Wiper intermittent dial 7
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
–
OCC3881D
OCC3880D
JPMIA0014GB
JPMIA0031GB
JPMIA0032GB
BCM (BODY CONTROL MODULE)
WT-67
< ECU DIAGNOSIS >
C
D
F
G
H
I
J
K
L
M
A
B
WT
N
O
P
144
(G)
Ground
Combination switch
OUTPUT 2
Output
Combination
switch
All switch OFF
(Wiper intermittent dial 4)
0 V
Front washer switch ON
(Wiper intermittent dial 4)
10.7 V
Any of the conditions below
with all switch OFF
• Wiper intermittent dial 1
• Wiper intermittent dial 5
• Wiper intermittent dial 6
145
(L)
Ground
Combination switch
OUTPUT 3
Output
Combination
switch
(Wiper intermit-
tent dial 4)
All switch OFF
0 V
Front wiper switch INT
10.7 V
Front wiper switch LO
Lighting switch AUTO
146
(SB)
Ground
Combination switch
OUTPUT 4
Output
Combination
switch
(Wiper intermit-
tent dial 4)
All switch OFF
0 V
Front fog lamp switch ON
10.7 V
Lighting switch 2ND
Lighting switch PASS
Turn signal switch LH
149
(W)
Ground
Tire pressure warn-
ing check switch
Input
—
5 V
150
(R)
Ground
Driver door switch
Input
Driver door
switch
OFF (When driver door
closes)
11.8 V
ON (When driver door
opens)
0 V
151
(G)
Ground
Rear window defog-
ger relay
Output
Rear window de-
fogger
Active
0 V
Not activated
Battery voltage
Terminal No.
(Wire color)
Description
Condition
Value
(Approx.)
Signal name
Input/
Output
+
–
JPMIA0033GB
JPMIA0034GB
JPMIA0035GB
JPMIA0011GB
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