Infiniti G35 (V35). Manual — part 189
INTELLIGENT KEY SYSTEM
BL-143
C
D
E
F
G
H
J
K
L
M
A
B
BL
2.
CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) CIRCUIT
1.
Disconnect Intelligent Key unit connector.
2.
Check continuity between Intelligent Key unit harness connector
M75 terminal 4 and Intelligent Key warning buzzer (engine
room) harness connector E38 terminal 3.
3.
Check continuity between Intelligent Key warning buzzer
(engine room) harness connector E38 terminal 3 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between Intelligent Key warn-
ing buzzer (engine room) and Intelligent Key unit.
3.
CHECK INTELLIGENT KEY WARNING BUZZER (ENGINE ROOM) OPERATION
Connect battery power supply to Intelligent Key warning buzzer (engine room) harness connector E38 termi-
nals 1 and 3, and check the operation.
OK or NG
OK
>> Intelligent Key warning buzzer (engine room) is OK.
NG
>> Replace Intelligent Key warning buzzer (engine room).
Check Outside Key Antenna
NIS001K6
1.
CHECK OUTSIDE KEY ANTENNA INPUT SIGNAL
1.
Turn ignition switch OFF.
2.
Check signal between Intelligent Key unit connector and ground with oscilloscope.
OK or NG
OK
>> Outside key antenna is OK.
NG
>> GO TO 2.
4 (GY) - 3 (GY)
: Continuity should exist.
3 (GY) - Ground
: Continuity should not exist.
PIIB4276E
1 (BAT+) - 3 (BAT-)
: the buzzer sounds
PIIB4277E
Con-
nec-
tor
Item
Terminal
(wire color)
Condi-
tion
Signal
(Reference value)
(+)
(-)
M75
Rear
bumper
17
(W/L)
Ground
Request
switch is
pushed
Driver side
19
(P)
Passenger
side
37
(LG)
MIIB0375E
SIIA1910J
BL-144
INTELLIGENT KEY SYSTEM
2.
CHECK OUTSIDE KEY ANTENNA CIRCUIT
1.
Disconnect Intelligent Key unit connector and outside key antenna connector.
2.
Check continuity between each outside key antenna harness connector D17 (driver side), D46 (passen-
ger side), B131 (rear bumper) terminals 1, 2 and Intelligent Key unit harness connector M75 terminals 17,
18, 19, 20, 37, and 38.
3.
Check continuity between each outside key antenna harness
connector terminals 1, 2 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Replace harness between outside key antenna and Intelligent Key unit.
3.
CHECK OUTSIDE KEY ANTENNA POWER SUPPLY
1.
Replace outside key antenna. (New antenna or other antenna)
2.
Connect Intelligent Key unit connector and outside key antenna connector.
3.
Check signal between Intelligent Key unit connector and ground
with oscilloscope.
OK or NG
OK
>> Replace outside key antenna.
NG
>> Replace Intelligent Key unit.
Item
Connector
Terminal
(Wire color)
Connector
Terminal
(Wire color)
Continuity
Rear
bumper
B131
1 (W)
M75
17 (W/L)
Yes
2 (B)
18 (W/R)
Driver side
D17
1 (P)
19 (P)
2 (PU)
20 (PU)
Passenger
side
D46
1 (LG)
37 (LG)
2 (Y)
38 (Y)
Item
Connector
Terminal
Continuity
Rear bumper
B131
1 (W)
Ground
No
2 (B)
Driver side
D17
1 (P)
2 (PU)
Passenger side
D46
1 (LG)
2 (Y)
PIIB7436E
Con-
nec-
tor
Item
Terminal
(wire color)
Condi-
tion
Signal
(Reference value)
(+)
(-)
M75
Rear
bumper
17
(W/L)
Ground
Request
switch is
pushed
Driver side
19
(P)
Passenger
side
37
(LG)
MIIB0375E
SIIA1910J
INTELLIGENT KEY SYSTEM
BL-145
C
D
E
F
G
H
J
K
L
M
A
B
BL
Check Inside Key Antenna
NIS001K7
1.
CHECK INSIDE KEY ANTENNA POWER SUPPLY SIGNAL
1.
Turn ignition switch OFF.
2.
Check signal between Intelligent Key unit connector and ground with oscilloscope.
OK or NG
OK
>> Inside key antenna is OK.
NG
>> GO TO 2.
2.
CHECK INSIDE KEY ANTENNA
1.
Disconnect Intelligent Key unit connector and inside key antenna connectors.
2.
Check continuity between inside key antenna harness connector M172 (center console), M69 (dash-
board), B424 (trunk room) terminals 1, 2 and Intelligent Key unit harness connector M75 terminals 13, 14,
15, 16, 35 and 36.
3.
Check continuity between inside key antenna harness connec-
tor M172 (center console), M69 (dashboard), B424 (trunk room) terminals 1, 2 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace harness between inside key antenna and Intelligent Key unit.
Con-
nec-
tor
Item
Terminal
(Wire color)
Condition
Signal (V)
(Reference value)
(+)
(–)
M75
Trunk
room
13
(B)
Ground
Any door
is open
→
All doors
are closed
Center
console
15
(G)
Ground
Ignition
switch is
pushed.
Dash-
board
35
(LG)
PIIA6753E
PIIB7441E
Item
Connec-
tor
Terminal
(Wire color)
Connec-
tor
Terminal
(Wire color)
Continuity
Trunk room
B424
1 (B)
M75
13 (B)
Yes
2 (W)
14 (W)
Center console
M172
1 (G)
15 (G)
2 (R)
16 (R)
Dashboard
M69
1 (LG)
35 (LG)
2 (PU)
36 (PU)
Item
Connector
Terminal
(Wire color)
Continuity
Trunk room
B424
1 (B)
Ground
No
2 (W)
Center console
M172
1 (G)
2 (R)
Dashboard
M69
1 (LG)
2 (PU)
PIIB4388E
BL-146
INTELLIGENT KEY SYSTEM
3.
CHECK INSIDE KEY ANTENNA POWER SUPPLY SINGAL
1.
Replace inside key antenna. (New antenna or other antenna)
2.
Connect Intelligent Key unit connector.
3.
Check signal between Intelligent Key unit connector and ground
with oscilloscope.
OK or NG
OK
>> Replace inside key antenna.
NG
>> Replace Intelligent key unit.
Check Steering Lock Unit
NIS001K8
1.
CHECK STEERING LOCK UNIT POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect steering lock unit connector.
3.
Check voltage between steering lock unit harness connector M311 terminal 1 and ground.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace steering lock unit power supply circuit.
2.
CHECK STEERING LOCK UNIT GROUND CIRCUIT
Check continuity between steering lock unit harness connector M311 terminal 4 and ground.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 6.
Con-
nec-
tor
Item
Terminal
(Wire color)
Condition
Signal (V)
(Reference value)
(+)
(–)
M75
Trunk
room
13
(B)
Ground
Any door
is open
→
All doors
are closed
Center
console
15
(G)
Ground
Ignition
switch is
pushed.
Dash-
board
35
(LG)
PIIA6753E
PIIB7441E
1 (Y) - Ground
: Battery voltage
PIIA6797E
4 (G/R) - Ground
: Continuity should exist.
PIIA6798E
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