airbag INFINITI QX56 2010 Factory Workshop Manual

PRECAUTIONSSE-45
< PRECAUTION >
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005256398
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery, and wait at least 3 minutes before performing any service.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005402593
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecti ng both battery cables with the ignition knob in the
″ LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS , an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
Revision: April 20092010 QX56

SEC-118
< PRECAUTION >[WITH INTELLIGENT KEY SYSTEM]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint Syst
em (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005199685
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005369244
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: April 20092010 QX56

SN-46
< PRECAUTION >
PRECAUTION
PRECAUTION
PRECAUTION
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005403331
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005403332
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NATS, an electrically controlled steering lock mech-
anism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery pow er is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables. NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC ″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be rotated.
4. Perform the necessary repair operation.
Revision: April 20092010 QX56

SR-1
RESTRAINTS
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SECTION SR
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CONTENTS
SRS AIRBAG
PRECAUTION ....... ........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution for SRS "AIR BAG" and "SEAT BELT
PRE-TENSIONER" Service ......................................
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Occupant Classification System Precaution .............3
PREPARATION ............................................4
PREPARATION .............................................. .....4
Special Service Tool ........................................... ......4
ON-VEHICLE REPAIR ..................................5
DRIVER AIR BAG MODULE .......................... .....5
Removal and Installation ...........................................5
SPIRAL CABLE ............................................. .....7
Removal and Installation ...........................................7
FRONT PASSENGER AIR BAG MODULE ......10
Removal and Installation ..................................... ....10
SIDE CURTAIN AIR BAG MODULE ................13
Removal and Installation .........................................13
CRASH ZONE SENSOR ...................................14
Removal and Installation ..................................... ....14
SIDE AIR BAG (SATELLITE) SENSOR ...........15
Removal and Installation .........................................15
FRONT SEAT BELT PRE-TENSIONER ...........16
Removal and Installation .........................................16
DIAGNOSIS SENSOR UNIT .............................17
Removal and Installation .........................................17
OCCUPANT CLASSIFICATION SYSTEM
CONTROL UNIT ................................................
19
Removal and Installation .........................................19
COLLISION DIAGNOSIS ..................................20
For Frontal Collision ................................................20
For Side and Rollover Collision ...............................21
Revision: April 20092010 QX56

SR-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005250379
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SR and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution for SRS "AIR BAG" and "S EAT BELT PRE-TENSIONER" Service
INFOID:0000000005147754
• Do not use electrical test equipment to check SRS ci rcuits unless instructed to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect both battery terminals and wait at least 3 min- utes.
For approximately 3 minutes after the terminals are remov ed, it is still possible for the air bags and seat belt
pre-tensioners to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.
• The air bag diagnosis sensor unit must always be installed with the arrow mark “ ⇐” pointing toward the front
of the vehicle for proper operation. Also check air bag diagnosis sensor unit for cracks, deformities or rust
before installation and replace as required.
• The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear.
• Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad side facing upward and seat mounted front side air bag module standing with the stud bolt side facing down.
• Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
• After air bag inflates, the front instrument panel assembly should be replaced if damaged.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000005256816
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the ″LOCK ″ position.
Revision: April 20092010 QX56

SRC-1
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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 ...................................................
17
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) ......................................
29
Description ...............................................................29
DTC Logic ................................................................29
Diagnosis Procedure (Component Diagnosis) ........30
B1193 – B1196 SIDE CURTAIN AIR BAG
MODULE RH (FRONT) .....................................
32
Description ...............................................................32
DTC Logic ................................................................32
Diagnosis Procedure (Component Diagnosis) ........33
B1150 – B1153 SIDE CURTAIN AIR BAG
MODULE LH (REAR) ........................................
35
Description ...............................................................35
DTC Logic ................................................................35
Diagnosis Procedure (Component Diagnosis) ........36
B1145 – B1148 SIDE CURTAIN AIR BAG
MODULE RH (REAR) .......................................
38
Description ...............................................................38
DTC Logic ................................................................38
Revision: April 20092010 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:0000000005147789
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:0000000005147790
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: April 20092010 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-84, "
Trouble Diag-
nosis without CONSULT-III".
>> END
Diagnosis Procedure (C omponent Diagnosis)INFOID:0000000005147791
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: April 20092010 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: April 20092010 QX56

SRC-20
< COMPONENT DIAGNOSIS >
B1065 – B1068, B1070 – B1073 PASSENGER AIRBAG MODULE
B1065 – B1068, B1070 – B1073 PASSENGER AIRBAG MODULE
DescriptionINFOID:0000000005147792
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:0000000005147793
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: April 20092010 QX56