2008 INFINITI QX56 airbag

SRC-1
RESTRAINTS
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SECTION SRC
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CONTENTS
SRS AIRBAG CONTROL SYSTEM
BASIC INSPECTION ....... .............................3
DIAGNOSIS AND REPAIR WORK FLOW .... .....3
Work Flow ........................................................... ......3
INTERMITTENTS INCIDENT ..............................5
Inspection Procedure ......................................... ......5
Trouble Diagnosis with CONSULT-III .......................5
FUNCTION DIAGNOSIS ...............................6
SRS AIR BAG SYSTEM ................................. .....6
SRS Configuration .............................................. ......6
SRS Component Parts Location ...............................7
Driver Air Bag Module ...............................................7
Front Passenger Air Bag Module ..............................8
Front Side Air Bag ............................................... ......8
Side Curtain Air Bag ..................................................8
Front Seat Belt Pre-tensioner with Load Limiter .......8
Direct-connect SRS Component Connectors ............9
OCCUPANT CLASSIFICATION SYSTEM .........10
System Diagram .................................................. ....10
Occupant Classification System (OCS) ..................10
PASSENGER SEAT BELT WARNING SYS-
TEM ....................................................................
12
System Diagram .................................................. ....12
System Description .................................................12
Component Parts Location ......................................12
ON BOARD DIAGNOSTIC (OBD) SYSTEM ......13
Trouble Diagnosis Introduction ........................... ....13
SRS Operation Check .............................................13
Trouble Diagnosis without CONSULT-III ................15
CONSULT-III Function (AIR BAG) ..........................15
Self-Diagnosis Function (Without CONSULT-III) ....15
COMPONENT DIAGNOSIS .........................17
B1049 – B1052, B1054 – B1057 DRIVER AIR-
BAG MODULE ...................................................
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Description ........................................................... ....17
DTC Logic ................................................................17
Diagnosis Procedure (Component Diagnosis) ........18
B1065 – B1068, B1070 – B1073 PASSEN-
GER AIRBAG MODULE ...................................
20
Description ...............................................................20
DTC Logic ................................................................20
Diagnosis Procedure (Component Diagnosis) ........21
B1134 – B1137 SIDE AIRBAG MODULE LH ...23
Description ...............................................................23
DTC Logic ................................................................23
Diagnosis Procedure (Component Diagnosis) ........24
B1129 – B1132 SIDE AIRBAG MODULE RH ...26
Description ...............................................................26
DTC Logic ................................................................26
Diagnosis Procedure (Component Diagnosis) ........27
B1198 – B1201 SIDE CURTAIN AIR BAG
MODULE LH (FRONT) ......................................
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Description ...............................................................29
DTC Logic ................................................................29
Diagnosis Procedure (Component Diagnosis) ........30
B1193 – B1196 SIDE CURTAIN AIR BAG
MODULE RH (FRONT) .....................................
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Description ...............................................................32
DTC Logic ................................................................32
Diagnosis Procedure (Component Diagnosis) ........33
B1150 – B1153 SIDE CURTAIN AIR BAG
MODULE LH (REAR) ........................................
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Description ...............................................................35
DTC Logic ................................................................35
Diagnosis Procedure (Component Diagnosis) ........36
B1145 – B1148 SIDE CURTAIN AIR BAG
MODULE RH (REAR) .......................................
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Description ...............................................................38
DTC Logic ................................................................38
Revision: March 2010 2008 QX56

B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
SRC-17
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
DescriptionINFOID:0000000001735303
DTC B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
The driver air bag module is dual stage and wired to the air bag diagnosis sensor unit through the spiral cable.
The air bag diagnosis sensor unit will monitor for opens and shorts in detected lines to the driver air bag mod-
ule including the spiral cable.
PA R T L O C AT I O N
Refer to SRC-7, "SRS Component Parts Location".
DTC LogicINFOID:0000000001735304
DTC DETECTION LOGIC
With CONSULT-lll
Without CONSULT-lll
DTC CONFIRMATION PROCEDURE (With CONSULT-lll)
CONSULT-III name DTC DTC detecting condition Repair order
DRIVER AIRBAG MODULE [OPEN] B1049
Driver air bag module circuit (DR1) is open
(including the spiral cable). 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the driver air bag module.
4. Replace the spiral cable.
5. Replace the air bag diagnosis sensor unit.
6. Replace the related harness.
B1054
Driver air bag module circuit (DR2) is open
(including the spiral cable).
DRIVER AIRBAG MODULE [VB-SHORT] B1050
Driver air bag module circuit (DR1) is
shorted to a power supply circuit
(including the spiral cable).
B1055 Driver air bag module circuit (DR2) is
shorted to a power supply circuit
(including the spiral cable).
DRIVER AIRBAG MODULE [GND-SHORT] B1051
Driver air bag module circuit (DR1) is
shorted to ground
(including the spiral cable).
B1056 Driver air bag module circuit (DR2) is
shorted to ground
(including the spiral cable).
DRIVER AIRBAG MODULE [SHORT] B1052
Driver air bag module circuits (DR1) are
shorted to each other
(including the spiral cable).
B1057 Driver air bag module circuits (DR2) are
shorted to each other
(including the spiral cable).
WHIA0260E
Revision: March 2010
2008 QX56

SRC-18
< COMPONENT DIAGNOSIS >
B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
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-18, "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
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:0000000001735305
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
Revision: March 2010 2008 QX56

B1049 – B1052, B1054 – B1057 DRIVER AIRBAG MODULE
SRC-19
< COMPONENT DIAGNOSIS >
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2.WIRING HARNESS
Is there any visible damage to the harness?
YES or NO
YES >> Replace the harness.
NO >> GO TO 3
3.DRIVER AIR BAG MODULE
Replace the driver air bag module. Refer to SR-5, "
Removal and Installation".
>> GO TO 4
4.SPIRAL CABLE
Replace the spiral cable. Refer to SR-7, "
Removal and Installation".
>> GO TO 5
5.AIR BAG DIAGNOSIS SENSOR UNIT
Replace the air bag diagnosis sensor unit. Refer to SR-17, "
Removal and Installation".
>> GO TO 6
6.RELATED HARNESS
Replace the related harness.
>>END
Revision: March 2010 2008 QX56

SRC-20
< COMPONENT DIAGNOSIS >
B1065 – B1068, B1070 – B1073 PASSENGER AIRBAG MODULE
B1065 – B1068, B1070 – B1073 PASSENGER AIRBAG MODULE
DescriptionINFOID:0000000001735306
DTC B1065 – B1068, B1070 – B1073 PASSENGER AIR BAG MODULE
The passenger air bag module is dual stage and wired to the air bag diagnosis sensor unit. The air bag diag-
nosis sensor unit will monitor for opens and shorts in detected lines to the passenger air bag module.
PA R T L O C AT I O N
Refer to SRC-7, "SRS Component Parts Location".
DTC LogicINFOID:0000000001735307
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.
CONSULT-III name DTC DTC detecting condition Repair order
ASSIST A/B MODULE [OPEN] B1065
Front passenger air bag module circuit
(AS1) is open. 1. Visually check the wiring harness connection.
2. Replace the harness if it has visible damage.
3. Replace the front passenger air bag module.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
B1070
Front passenger air bag module circuit
(AS2) is open.
ASSIST A/B MODULE [VB-SHORT] B1066
Front passenger air bag module circuit
(AS1) is shorted to a power supply circuit.
B1071 Front passenger air bag module circuit
(AS2) is shorted to a power supply circuit.
ASSIST A/B MODULE [GND-SHORT] B1067
Front passenger air bag module circuit
(AS1) is shorted to ground.
B1072 Front passenger air bag module circuit
(AS2) is shorted to ground.
ASSIST A/B MODULE [SHORT] B1068
Front passenger air bag module circuits
(AS1) are shorted to each other.
B1073 Front passenger air bag module circuits
(AS2) are shorted to each other.
WHIA0261E
Revision: March 2010
2008 QX56

B1065 – B1068, B1070 – B1073 PASSENGER AIRBAG MODULE
SRC-21
< COMPONENT DIAGNOSIS >
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Is the DTC detected?
YES >> Refer to SRC-21, "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
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:0000000001735308
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 PASSENGER AIR BAG MODULE
Replace the front passenger air bag module. Refer to SR-10, "
Removal and Installation".
Revision: March 2010 2008 QX56

SRC-22
< COMPONENT DIAGNOSIS >
B1065 – B1068, B1070 – B1073 PASSENGER AIRBAG MODULE
>> 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
Replace the related harness.
>>END
Revision: March 2010 2008 QX56

B1134 – B1137 SIDE AIRBAG MODULE LHSRC-23
< COMPONENT DIAGNOSIS >
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B1134 – B1137 SIDE AIRBAG MODULE LH
DescriptionINFOID:0000000001735309
DTC B1134 – B1137 FRONT LH SIDE AIR BAG MODULE
The front LH side air bag module is wired to the air bag diagnosis sensor unit. The air bag diagnosis sensor
unit will monitor for opens and shorts in detected lines to the front LH side air bag module.
PA R T L O C AT I O N
Refer to SRC-7, "SRS Component Parts Location".
DTC LogicINFOID:0000000001735310
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-24, "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
SIDE MODULE LH [OPEN] B1134Front LH side air bag module 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 back assembly.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
SIDE MODULE LH
[VB-SHORT] B1135Front LH side air bag module circuit is
shorted to a power supply circuit.
SIDE MODULE LH [GND-SHORT] B1136
Front LH side air bag module circuit is
shorted to ground.
SIDE MODULE LH [SHORT] B1137Front LH side air bag module circuits are
shorted to each other.
WHIA0265E
Revision: March 2010
2008 QX56