Infiniti QX56 (Z62). Manual — part 1089
SBC-56
< DTC/CIRCUIT DIAGNOSIS >
SEAT BELT BUCKLE SWITCH (PASSENGER SIDE)
4.
Check continuity between pre-crash seat belt control unit (passenger side) harness connector and
ground.
Is the inspection result normal?
YES
>> Replace pre-crash seat belt control unit (passenger side). Refer to
TOR : Removal and Installation"
.
NO
>> Repair or replace harness or connector.
3.
CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE) GROUND CIRCUIT
Check continuity between seat belt assembly (passenger side) and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace harness or connector.
4.
CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE)
Check seat belt assembly (passenger side). Refer to
SBC-56, "Component Inspection [Seat Belt Assembly
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
NO
>> Replace seat belt assembly (passenger side). Refer to
Component Inspection [Seat Belt Assembly (Passenger Side)]
INFOID:0000000006237936
1.
CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE)
1.
Turn ignition switch OFF.
2.
Disconnect seat belt assembly (passenger side) harness connector.
3.
Check continuity between seat belt assembly (passenger side) terminals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace seat belt assembly (passenger side). Refer to
Pre-crash seat belt control unit (passenger side)
Ground
Continuity
Connector
Terminal
B231
6
Not existed
Seat belt assembly (passenger side)
Ground
Continuity
Connector
Terminal
B245
4
Existed
Seat belt assembly (passenger side)
Condition
Continuity
Terminal
3
4
When passenger side seat belt is fastened
Not existed
When passenger side seat belt is not fastened
Existed
5
When passenger side seat belt is fastened
Existed
When passenger side seat belt is not fastened
Not existed
SEAT BELT WARNING LAMP CIRCUIT
SBC-57
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SBC
N
O
P
SEAT BELT WARNING LAMP CIRCUIT
Component Function Check
INFOID:0000000006237937
1.
CHECK SEAT BELT WARNING LAMP FUNCTION-I
1.
Turn ignition switch ON.
2.
Check seat belt warning lamp function.
Is the inspection results normal?
YES
>> GO TO 2.
NO
>> Check combination meter circuit. Refer to
.
2.
CHECK SEAT BELT WARNING LAMP FUNCTION-II
1.
Sits in the passenger seat.
2.
Fasten the seat belt (passenger side).
3.
Check seat belt warning lamp function.
Is the inspection results normal?
YES
>> Seat belt warning lamp circuit is normal.
NO
>> Check seat belt warning lamp circuit. Refer to
.
Diagnosis Procedure
INFOID:0000000006237938
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal and wait at least 3
minutes. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE) CIRCUIT-I
1.
Turn ignition switch OFF.
2.
Disconnect air bag diagnosis sensor unit harness connector and seat belt assembly (passenger side) har-
ness connector.
3.
Check continuity between air bag diagnosis sensor unit harness connector and seat belt assembly (pas-
senger side) harness connector.
4.
Check continuity between air bag diagnosis sensor unit harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace harness or connector.
2.
CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE) CIRCUIT-II
Check continuity between seat belt assembly (passenger side) harness connector and ground.
Condition
Seat belt warning lamp
Seat belt (driver side) is fastened
Not illuminated
Seat belt (driver side) is unfastened
Illuminated
Condition
Seat belt warning lamp
Seat belt (passenger side) is fastened
Not illuminated
Seat belt (passenger side) is unfastened
Illuminated
Air bag diagnosis sensor unit
Seat belt assembly (passenger side)
Continuity
Connector
Terminal
Connector
Terminal
B228
29
B245
3
Existed
Air bag diagnosis sensor unit
Ground
Continuity
Connector
Terminal
B228
29
Not existed
SBC-58
< DTC/CIRCUIT DIAGNOSIS >
SEAT BELT WARNING LAMP CIRCUIT
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace harness or connector.
3.
CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE)
Check seat belt assembly (passenger side).
Refer to
SBC-58, "Component Inspection [Seat Belt Assembly (Passenger Side)]"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace seat belt assembly (passenger side). Refer to
4.
CHECK SEAT BELT WARNING LAMP CIRCUIT
1.
Disconnect combination meter harness connector.
2.
Check continuity between air bag diagnosis sensor unit harness connector and combination meter har-
ness connector.
3.
Check continuity between seat belt warning unit and ground.
Is the inspection results normal?
YES
>> GO TO 5.
NO
>> Replace harness or connector.
5.
CHECK COMBINATION METER POWER SUPPLY AND GROUND CIRCUIT
Check combination meter power supply and ground circuit.
Refer to
MWI-64, "COMBINATION METER : Diagnosis Procedure"
.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace harness or connector.
6.
REPLACE COMBINATION METER
Replace combination meter.
Refer to
MWI-85, "Removal and Installation"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace air bag diagnosis sensor unit. Refer to
SR-26, "Removal and Installation"
.
Component Inspection [Seat Belt Assembly (Passenger Side)]
INFOID:0000000006237939
1.
CHECK SEAT BELT ASSEMBLY (PASSENGER SIDE)
1.
Turn ignition switch OFF.
2.
Disconnect seat belt assembly (passenger side) harness connector.
3.
Check continuity between seat belt assembly (passenger side) terminals.
Seat belt assembly (passenger side)
Ground
Continuity
Connector
Terminal
B245
4
Existed
Air bag diagnosis sensor unit
Combination meter
Continuity
Connector
Terminal
Connector
Terminal
M59
24
M34
36
Existed
Air bag diagnosis sensor unit
Ground
Continuity
Connector
Terminal
M59
24
Not existed
SEAT BELT WARNING LAMP CIRCUIT
SBC-59
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
I
J
K
L
M
A
B
SBC
N
O
P
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace seat belt assembly (passenger side). Refer to
.
Seat belt assembly (passenger side)
Condition
Continuity
Terminal
3
4
When passenger side seat belt is fastened
Not existed
When passenger side seat belt is not fastened
Existed
5
When passenger side seat belt is fastened
Existed
When passenger side seat belt is not fastened
Not existed
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