Seat INFINITI QX56 2008 Factory Service Manual

SRC-46
< COMPONENT DIAGNOSIS >
B1081 – B1084 SEAT BELT PRE-TENSIONER RH
Replace the related harness.
>>END
Revision: March 2010 2008 QX56

B1182 - B1185 SEAT BELT BUCKLE PRE-TENSIONER LH
SRC-47
< COMPONENT DIAGNOSIS >
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B1182 - B1185 SEAT BELT BUCKLE PRE-TENSIONER LH
DescriptionINFOID:0000000001735333
DTC B1182 – B1185 SEAT BELT BUCKLE PRE-TENSIONER LH
The seat belt buckle pre-tensioner LH is wired to the air bag diagnosis sensor unit. The air bag diagnosis sen-
sor unit will monitor for opens and shorts in detected lines to the seat belt buckle pre-tensioner LH.
PA R T L O C AT I O N
Refer to SRC-7, "SRS Component Parts Location".
DTC LogicINFOID:0000000001735334
DTC DETECTION LOGIC
With CONSULT-lll
Without CONSULT-lll
DTC CONFIRMATION PROCEDURE (With CONSULT-lll)
1.INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT-lll.
Is the DTC detected?
YES >> Refer to SRC-48, "Diagnosis Procedure (Component Diagnosis)".
NO >> Inspection End.
DTC CONFIRMATION PROCE DURE (Without CONSULT-lll)
NOTE:
SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.IGNITION SWITCH
CONSULT-III name DTC DTC detecting condition Repair order
PRE-TEN2 FRONT LH [OPEN] B1182LH seat belt buckle pre-tensioner circuit is
open. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the front LH seat belt buckle pre-ten-
sioner.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
PRE-TEN2 FRONT LH
[VB-SHORT] B1183LH seat belt buckle pre-tensioner circuit is
shorted to a power supply circuit.
PRE-TEN2 FRONT LH [GND-SHORT] B1184
LH seat belt buckle pre-tensioner circuit is
shorted to ground.
PRE-TEN2 FRONT LH [SHORT] B1185LH seat belt buckle pre-tensioner circuits
are shorted to each other.
WHIA0251E
Revision: March 2010
2008 QX56

SRC-48
< COMPONENT DIAGNOSIS >
B1182 - B1185 SEAT BELT BUCKLE PRE-TENSIONER LH
Turn ignition switch ON.
>> GO TO 2
2.IGNITION SWITCH
After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
>> GO TO 3
3.WAIT TIME
Wait more than 3 seconds.
>> GO TO 4
4.REPEAT STEPS
Repeat steps 1 to 3 twice.
>> GO TO 5
5.IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 6
6.DIAGNOSTIC MODE
SRS system is now in diagnostic mode and AIR BAG warning lamp flashes. Refer to SRC-85, "
Trouble Diag-
nosis without CONSULT-III".
>> END
Diagnosis Procedure (C omponent Diagnosis)INFOID:0000000001735335
Recheck SRS after each replacement.
1.HARNESS CONNECTOR
Is there any visible damage to the connector?
YES or NO
YES >> Replace the harness.
NO >> GO TO 2
2.WIRING HARNESS
Is there any visible damage to the harness?
YES or NO
YES >> Replace the harness.
NO >> GO TO 3
3.FRONT LH SEAT BELT BUCKLE PRE-TENSIONER
Replace the front LH seat belt buckle pre-tensioner. Refer to SR-16, "
Removal and Installation".
>> GO TO 4
4.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to SR-17, "
Removal and Installation".
>> GO TO 5
5.RELATED HARNESS
Revision: March 2010 2008 QX56

B1182 - B1185 SEAT BELT BUCKLE PRE-TENSIONER LH
SRC-49
< COMPONENT DIAGNOSIS >
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Replace the related harness. >>END
Revision: March 2010 2008 QX56

SRC-50
< COMPONENT DIAGNOSIS >
B1177 - B1180 SEAT BELT BUCKLE PRE-TENSIONER RH
B1177 - B1180 SEAT BELT BUCKLE PRE-TENSIONER RH
DescriptionINFOID:0000000001735336
DTC B1177 – B1180 SEAT BELT BUCKLE PRE-TENSIONER RH
The seat belt buckle pre-tensioner RH is wired to the air bag diagnosis sensor unit. The air bag diagnosis sen-
sor unit will monitor for opens and shorts in detect ed lines to the seat belt buckle pre-tensioner RH.
PA R T L O C AT I O N
Refer to SRC-7, "SRS Component Parts Location".
DTC LogicINFOID:0000000001735337
DTC DETECTION LOGIC
With CONSULT-lll
Without CONSULT-lll
DTC CONFIRMATION PROCEDURE (With CONSULT-lll)
1.INSPECTION START
Turn ignition switch ON.
>> GO TO 2.
2.CHECK SELF-DIAG RESULT
Check for the DTC on CONSULT-lll.
Is the DTC detected?
YES >> Refer to SRC-51, "Diagnosis Procedure (Component Diagnosis)".
NO >> Inspection End.
DTC CONFIRMATION PROCEDURE (Without CONSULT-lll)
NOTE:
SRS will not enter diagnosis mode if no malfunction is detected in user mode.
1.IGNITION SWITCH
CONSULT-III name DTC DTC detecting condition Repair order
PRE-TEN2 FRONT RH [OPEN] B1177RH seat belt buckle pre-tensioner circuit is
open. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the front RH seat belt buckle pre-ten-
sioner.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
PRE-TEN2 FRONT RH
[VB-SHORT] B1178RH seat belt buckle pre-tensioner circuit is
shorted to a power supply circuit.
PRE-TEN2 FRONT RH [GND-SHORT] B1179
RH seat belt buckle pre-tensioner circuit is
shorted to ground.
PRE-TEN2 FRONT RH [SHORT] B1180RH seat belt buckle pre-tensioner circuits
are shorted to each other.
WHIA0250E
Revision: March 2010
2008 QX56

B1177 - B1180 SEAT BELT BUCKLE PRE-TENSIONER RHSRC-51
< COMPONENT DIAGNOSIS >
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Turn ignition switch ON. >> GO TO 2
2.IGNITION SWITCH
After air bag warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
>> GO TO 3
3.WAIT TIME
Wait more than 3 seconds.
>> GO TO 4
4.REPEAT STEPS
Repeat steps 1 to 3 twice.
>> GO TO 5
5.IGNITION SWITCH
Turn ignition switch ON.
>> GO TO 6
6.DIAGNOSTIC MODE
SRS system is now in diagnostic mode and AIR BAG warning lamp flashes. Refer to SRC-85, "
Trouble Diag-
nosis without CONSULT-III".
>> END
Diagnosis Procedure (C omponent Diagnosis)INFOID:0000000001735338
Recheck SRS after each replacement.
1.HARNESS CONNECTOR
Is there any visible damage to the connector?
YES or NO
YES >> Replace the harness.
NO >> GO TO 2
2.WIRING HARNESS
Is there any visible damage to the harness?
YES or NO
YES >> Replace the harness.
NO >> GO TO 3
3.FRONT RH SEAT BELT BUCKLE PRE-TENSIONER
Replace the front RH seat belt buckle pre-tensioner. Refer to SR-16, "
Removal and Installation".
>> GO TO 4
4.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to SR-17, "
Removal and Installation".
>> GO TO 5
5.RELATED HARNESS
Revision: March 2010 2008 QX56

SRC-52
< COMPONENT DIAGNOSIS >
B1177 - B1180 SEAT BELT BUCKLE PRE-TENSIONER RH
Replace the related harness.
>>END
Revision: March 2010 2008 QX56

B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM
SRC-67
< COMPONENT DIAGNOSIS >
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B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM
DescriptionINFOID:0000000006081142
DTC B1017 – B1022 OCCUPANT CL ASSIFICATION SYSTEM (OCS)
The OCS control unit is wired to the air bag diagnosis sensor unit. The air bag diagnosis sensor unit will mon-
itor the OCS for failures and interruptions in co mmunication between the OCS control unit and the air bag
diagnosis sensor unit.
PA R T L O C AT I O N
Refer to SRC-7, "SRS Component Parts Location".
DTC LogicINFOID:0000000006081143
DTC DETECTION LOGIC
With CONSULT-lll
Without CONSULT-lll
CONSULT-III name DTC DTC detecting condition Repair order
OCCUPANT SENS C/U [UNIT FAIL] B1017 The OCS control unit is malfunctioning. 1. Replace the RH front seat cushion assembly.
Do not disassemble the seat cushion assem-
bly.
B1021
B1020 The OCS control unit is malfunctioning. 1. Replace the harness if it has visible damage.
2. Replace the RH front seat cushion assembly.
Do not disassemble the seat cushion assem-
bly.
3. Replace the RH front seat belt assembly.
OCCUPANT SENS [UNIT FAIL] B1018The OCS sensor is malfunctioning. 1. Visually check the wiring harness connection
to the OCS sensor.
2. Replace the RH front seat cushion assembly. Do not disassemble the seat cushion assem-
bly.
BELT TENSION SENS [UNIT FAIL] B1019The belt tension sensor is malfunctioning. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the RH front seat belt assembly.
4. Replace the RH front seat cushion assembly. Do not disassemble the seat cushion assem-
bly.
5. Replace the related harness.
OCCUPANT SENS C/U [COMM FAIL] B1022Communication between the OCS control
unit and the air bag diagnosis sensor unit is
interrupted.
1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the RH front seat cushion assembly.
Do not disassemble the seat cushion assem-
bly.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
WHIA0211E
Revision: March 2010 2008 QX56

B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM
SRC-69
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2.HARNESS CONNECTOR
Is there any visible damage to the OCS sub-harness connec tor (DTC B1022) or to the belt tension sensor con-
nector (DTC B1019)?
YES or NO
YES >> Replace the harness.
NO >> GO TO 3
3.WIRING HARNESS
Is there any visible damage to the body or seat sub harness?
YES or NO
YES >> Replace the harness.
NO >> GO TO 4
4.CHECK CURRENT DTC
Does CONSULT-III indicate B1022?
YES or NO
YES >> GO TO 5
NO >> GO TO 6
5.OCS CONTROL UNIT HARNESS CONNECTOR
Is the OCS control unit or body harness connector disconnected?
YES or NO
YES >> Connect the harness. Clear the DTC.
NO >> GO TO 13
6.CHECK CURRENT DTC
Does CONSULT-III indicate B1018?
YES or NO
YES >> GO TO 7
NO >> GO TO 8
7.OCS SENSOR HARNESS CONNECTOR
Is the OCS sensor harness connector disconnected?
YES or NO
YES >> Connect the harness. Clear the DTC.
NO >> GO TO 8
8.CHECK CURRENT DTC
Does CONSULT-III indicate B1020?
YES or NO
YES >> GO TO 9
NO >> GO TO 10
9.BELT TENSION SENSOR
Inspect the belt tension sensor, belt tension sensor connector and harness.
Are the inspection results normal?
YES >> GO TO 10
NO >> GO TO 12
10.CHECK CURRENT DTC
Does CONSULT-III indicate B1019?
YES or NO
YES >> GO TO 11
NO >> GO TO 12
11 .BELT TENSION SENSOR HARNESS CONNECTOR
Revision: March 2010 2008 QX56

SRC-70
< COMPONENT DIAGNOSIS >
B1017 – B1022 OCCUPANT CLASSIFICATION SYSTEM
Is the belt tension sensor harness connector disconnected?
YES or NO
YES >> Connect the harness. Clear the DTC.
NO >> GO TO 12
12.REPLACE RH FRONT SEAT BELT ASSEMBLY
Replace the RH front seat belt assembly.
>> GO TO 13
13.REPLACE RH FRONT SEAT CUSHION ASSEMBLY
Replace the RH front seat cushion assembly. Refer to SE-49, "
Removal and Installation".
>> GO TO 14
14.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to SR-17, "
Removal and Installation".
>> END.
Revision: March 2010 2008 QX56