Infiniti G37 Coupe. Manual — part 1079
SBC-24
< COMPONENT DIAGNOSIS >
SEAT BELT BUCKLE SWITCH (DRIVER SIDE) CIRCUIT CHECK
Is the inspection result normal?
YES
>> Refer to
SBC-24, "Component Inspection (Driver seat belt buckle switch ground circuit)"
.
NO
>> Replace LH seat belt buckle.
Component Inspection (Driver seat belt buckle switch ground circuit)
INFOID:0000000001712002
1.
CHECK LH SEAT BELT BUCKLE SWITCH GROUND CIRCUIT HARNESS
Does continuity between LH seat belt buckle switch harness connector terminal 2 and ground exist?
Is the inspection result normal?
YES
>> LH seat belt buckle switch system is normal.
NO
>> Repair or replace harness between LH seat belt buckle switch and ground.
Terminal
Measuring condition
Continuity
1
2
When seat belt is not fastened
Existed
When seat belt is fastened
Not existed
2 - Ground
Existed
SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT CHECK
SBC-25
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SBC
N
O
P
SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT CHECK
Description
INFOID:0000000001711995
• Perform the control of tension reducer according to the seat belt buckle switch ON/OFF.
• If the seat belt is not fastened when the ignition switch is turned ON, it detects whether the seat belt is fas-
tened or not so as to turn on the seat belt warning lamp of combination meter.
• The seat belt buckle switch is installed in the seat belt buckle.
Component Function Check
INFOID:0000000001711996
1.
CHECK PRE-CRASH SEAT BELT CONTROL UNIT INPUT SIGNAL
With CONSULT-III
When checking “BUCKLE SW RH” on DATA MONITOR screen, check that ON/OFF display changes are syn-
chronized with the insertion operation to the seat belt buckle.
Without CONSULT-III
1.
Turn the ignition switch ON.
2.
Check that voltage between RH seat belt buckle switch harness connector terminal 1 and ground is nor-
mal.
Is the inspection result normal?
YES
>> RH seat belt buckle switch system is normal.
NO
>> GO TO 2.
2.
CHECK RH SEAT BELT BUCKLE SWITCH HARNESS
1.
Turn the ignition switch OFF.
2.
Disconnect pre-crash seat belt control unit connector and RH seat belt buckle switch connector.
3.
Does continuity between pre-crash seat belt control unit harness connector terminal 8 and RH seat belt
buckle switch harness connector terminal 1 exist?
4.
Does continuity between pre-crash seat belt control unit harness connector terminal 8 and ground exist?
Is the inspection result normal?
YES
>> Refer to
SBC-25, "Component Inspection (Passenger seat belt buckle switch)"
NO
>> Repair or replace harness between pre-crash seat belt control unit and RH seat belt buckle
switch.
Component Inspection (Passenger seat belt buckle switch)
INFOID:0000000001711997
1.
CHECK RH SEAT BELT BUCKLE SWITCH
Check that continuity between RH seat belt buckle switch terminals 1 and 2 is normal when performing the
insertion operation to the seat belt buckle.
BUCKLE SW RH
When RH seat belt is
not fastened
OFF
When RH seat belt is
fastened
ON
Terminal
Measuring condition
Voltage (V)
(+)
(-)
1
Ground
When seat belt is not fastened
Approx. 0
When seat belt is fastened
Approx. 5
8 - 1
Existed
8 - Ground
Not existed
SBC-26
< COMPONENT DIAGNOSIS >
SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT CHECK
Is the inspection result normal?
YES
>> Refer to
SBC-26, "Component Inspection (Passenger seat belt side buckle switch ground circuit)"
.
NO
>> Replace RH seat belt buckle.
Component Inspection (Passenger seat belt side buckle switch ground circuit)
INFOID:0000000001711998
1.
CHECK RH SEAT BELT BUCKLE SWITCH GROUND CIRCUIT HARNESS
Does continuity between RH seat belt buckle switch harness connector terminal 2 and ground exist?
Is the inspection result normal?
YES
>> RH seat belt buckle switch system is normal.
NO
>> Repair or replace harness between RH seat belt buckle switch and ground.
Terminal
Measuring condition
Continuity
1
2
When seat belt is not fastened
Existed
When seat belt is fastened
Not existed
2 - Ground
Existed
IGNITION POWER SUPPLY CIRCUIT CHECK
SBC-27
< COMPONENT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SBC
N
O
P
IGNITION POWER SUPPLY CIRCUIT CHECK
Description
INFOID:0000000001712003
• It is the power supply system when turning the ignition switch to IGN ON/OFF.
• The ignition switch is installed to the right side of the steering column.
Component Function Check
INFOID:0000000001712004
1.
CHECK FUSES
1.
Turn the ignition switch OFF.
2.
Check that the fuses are not blown.
CAUTION:
Refer to
for fuse number.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> If a fuse is blown, determine the possible cause, repair the affected circuit, and replace the blown
fuse.
2.
CHECK IGNITION POWER SUPPLY CIRCUIT
1.
Disconnect the pre-crash seat belt control unit connector.
2.
Turn the ignition switch ON.
3.
Check that voltage between pre-crash seat belt control unit harness connector terminal 13 and ground is
normal.
Is the inspection result normal?
YES
>> Ignition power supply system is normal.
NO
>> Repair or replace pre-crash seat belt control unit ignition power supply circuit harness.
13 - Ground
Approx. 12V
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