Infiniti FX35, FX50 (S51). Manual — part 1596
SBC-42
< DTC/CIRCUIT DIAGNOSIS >
SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)
1.
Sit down to passenger seat.
2.
Check that seat belt warning lamp turns OFF when passenger seat belt is fastened, and then turns ON
when passenger seat belt is unfastened.
Is the inspection result normal?
YES
>> Seat belt buckle switch (passenger side) circuit is normal.
NO
>> Refer to
SBC-42, "SEAT BELT WARNING LAMP SYSTEM : Diagnosis Procedure"
.
SEAT BELT WARNING LAMP SYSTEM : Diagnosis Procedure
INFOID:0000000005241771
1.
CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT
1.
Turn the ignition switch ON.
2.
Check that voltage between seat belt buckle switch (passenger side) harness connector and ground.
*
1
: With climate controlled seat
*
2
: Without climate controlled seat
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE) CIRCUIT
1.
Turn the ignition switch OFF.
2.
Disconnect air bag diagnosis sensor unit connector and seat belt buckle switch (passenger side) connec-
tor.
3.
Check continuity between air bag diagnosis sensor unit harness connector and seat belt buckle switch
(passenger side) harness connector.
*
1
: With climate controlled seat
*
2
: Without climate controlled seat
4.
Check continuity between pre-crash seat belt control unit (passenger side) harness connector and
ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair or replace harness between pre-crash seat belt control unit (passenger side) and seat belt
buckle switch (passenger side).
(+)
(–)
Condition
Voltage (V)
(Approx.)
Seat belt buckle switch (passenger side)
Connector
Terminal
B213
*1
1
*1
Ground
When passenger side
seat belt is fastened
8.5
When passenger side
seat belt is not fastened
0
B513
*2
61
*2
When passenger side
seat belt is fastened
8.5
When passenger side
seat belt is not fastened
0
Air bag diagnosis sensor unit
Seat belt buckle switch (passenger side)
Continuity
Connector
Terminal
Connector
Terminal
B215
25
B213
*1
1*
1
Existed
B513
*2
61*
2
Air bag diagnosis sensor unit
Ground
Continuity
Connector
Terminal
B215
25
Not existed
SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)
SBC-43
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SBC
N
O
P
3.
CHECK SEAT BELT BUCKLE SWITCH GROUND CIRCUIT
Check continuity between seat belt buckle switch (passenger side) harness connector and ground.
*
1
: With climate controlled seat
*
2
: Without climate controlled seat
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness between seat belt buckle switch and ground.
4.
CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)
Check seat belt buckle switch (passenger side). Refer to
SBC-43, "SEAT BELT WARNING LAMP SYSTEM :
Component Inspection (Belt Buckle Switch)"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace seat belt buckle switch (passenger side).
SEAT BELT WARNING LAMP SYSTEM : Component Inspection (Belt Buckle Switch)
INFOID:0000000005241772
1.
CHECK SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)
1.
Turn ignition switch OFF.
2.
Disconnect seat belt buckle switch connector.
3.
Check continuity of seat belt buckle (passenger side).
*
1
: With climate controlled seat
*
2
: Without climate controlled seat
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace seat belt buckle switch (passenger side).
Seat belt buckle switch (passenger side)
Ground
Continuity
Connector
Terminal
B213*
1
2
*1
Existed
B513
*2
60
*2
Seat belt buckle switch (passenger side)
Condition
Continuity
Connector
Terminal
B213
*1
1
2
When passenger side
seat belt is not fastened
Existed
When passenger side
seat belt is fastened
Not existed
B513
*2
61
60
When passenger side
seat belt is not fastened
Existed
When passenger side
seat belt is fastened
Not existed
SBC-44
< DTC/CIRCUIT DIAGNOSIS >
SEAT BELT WARNING LAMP CIRCUIT
SEAT BELT WARNING LAMP CIRCUIT
Diagnosis Procedure
INFOID:0000000005241773
1.
CHECK SEAT BELT WARNING LAMP CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect air bag diagnosis sensor unit connector.
3.
Turn ignition switch ON.
4.
Check that voltage between air bag diagnosis sensor unit harness connector and ground.
Is the inspection result normal?
YES
>> Replace air bag diagnosis sensor unit.
NO
>> GO TO 2.
2.
CHECK SEAT BELT WARNING LAMP CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector.
3.
Check continuity between combination meter harness connector and air bag diagnosis sensor unit har-
ness connector.
4.
Check continuity between combination meter and ground.
Is the inspection result normal?
YES
>> Repair or replace combination meter.
NO
>> Repair or replace harness between combination meter and air bag diagnosis sensor unit.
Air bag diagnosis sensor unit
Ground
Voltage (V)
(Approx.)
Connector
Terminal
M147
24
Battery voltage
Combination meter
Air bag diagnosis sensor unit
Continuity
Connector
Terminal
Connector
Terminal
B53
30
M147
24
Existed
Combination meter
Ground
Continuity
Connector
Terminal
B53
30
Not existed
SEAT BELT WARNING SYSTEM
SBC-45
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SBC
N
O
P
SEAT BELT WARNING SYSTEM
Wiring Diagram - SEAT BELT WARNING SYSTEM -
INFOID:0000000005241774
JCHWA0395GB
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