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H RESTRAINTS

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SECTION SRS B

E
CONTENTS
PRECAUTIONS ......................................................... 3
. DIAGNOSTIC PROCEDURE 4 (CONTINUED F
Precautions for Supplemental Restraint System FROM DIAGNOSTIC PROCEDURE 2) ............. 31 .
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- DIAGNOSTIC PROCEDURE 5 .......................... 31 .
SIONER" ................................................................. 3
. Trouble Diagnosis Without CONSULT-II ................ 38 . G
Precautions for SRS "AIR BAG" and "SEAT BELT DIAGNOSTIC PROCEDURE 6 .......................... 38 .
PRE-TENSIONER" Service .................................... 3 . WARNING LAMP FLASH CODE CHART .......... 39 .
Occupant Classification System Precaution ........... 3 . Trouble Diagnosis: "AIR BAG" Warning Lamp Does
SRS
Trouble Diagnosis Precaution ................................. 3 . Not Turn Off ........................................................... 44
.
PREPARATION .......................................................... 4
. DIAGNOSTIC PROCEDURE 6 .......................... 44 .
Special Service Tools .............................................. 4
. Trouble Diagnosis: "AIR BAG" Warning Lamp Does
Commercial Service Tools ....................................... 4 . Not Turn On ........................................................... 45
. I
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) ...... 5 . DIAGNOSTIC PROCEDURE 7 .......................... 45 .
SRS Configuration .................................................. 5
. DRIVER AIR BAG MODULE ................................... 46 .
Front Seat Belt Pre-tensioner with Load Limiter ..... 6 Removal and Installation ....................................... 46 . J
Front Side Air Bag ................................................... 6
. REMOVAL .......................................................... 46
.
Side Curtain Air Bag ................................................ 6
. INSTALLATION .................................................. 47 .
Occupant Classification System .............................. 6 . SPIRAL CABLE ....................................................... 48.
K
Direct-connect SRS Component Connectors .......... 7 . Removal and Installation ....................................... 48 .
TROUBLE DIAGNOSIS ............................................. 8 . REMOVAL .......................................................... 48
.
Trouble Diagnosis Introduction ................................ 8 . INSTALLATION .................................................. 49 .
DIAGNOSIS FUNCTION ...................................... 8 . FRONT PASSENGER AIR BAG MODULE ............. 51 . L
HOW TO PERFORM TROUBLE DIAGNOSES Removal and Installation ....................................... 51 .
FOR QUICK AND ACCURATE REPAIR .............. 8 . REMOVAL .......................................................... 51
.
WORK FLOW ....................................................... 9
. INSTALLATION .................................................. 51 . M
SRS Components Parts Location .......................... 10 . WIRING HARNESS MODIFICATION ................. 52 .
Schematic ..............................................................11
. SIDE CURTAIN AIR BAG MODULE ....................... 54 .
Wiring Diagram-- SRS -- ..................................... 12 . Removal and Installation ....................................... 54 .
CONSULT-II Function (AIR BAG) .......................... 18 . REMOVAL .......................................................... 54
.
CONSULT-II Function ........................................... 18 . INSTALLATION .................................................. 54 .
HOW TO CHANGE SELF-DIAGNOSIS MODE CRASH ZONE SENSOR .......................................... 56 .
WITH CONSULT-II ............................................. 18 . Removal and Installation ....................................... 56 .
HOW TO ERASE SELF-DIAGNOSIS RESULTS 19 ... REMOVAL .......................................................... 56
.
Self-Diagnosis Function (Without CONSULT-II) .... 19 . INSTALLATION .................................................. 56 .
HOW TO CHANGE SELF-DIAGNOSIS MODE... 19 SIDE AIR BAG (SATELLITE) SENSOR .................. 57 .
HOW TO ERASE SELF-DIAGNOSIS RESULTS 20 ... Removal and Installation ....................................... 57 .
SRS Operation Check ........................................... 20 . REMOVAL .......................................................... 57
.
DIAGNOSTIC PROCEDURE 1 .......................... 20 . INSTALLATION .................................................. 57 .
Trouble Diagnosis With CONSULT-II .................... 22 . FRONT SEAT BELT PRE-TENSIONER .................. 58 .
DIAGNOSTIC PROCEDURE 2 .......................... 22 . Removal and Installation ....................................... 58 .
DIAGNOSTIC PROCEDURE 3 .......................... 28 .

Revision: October 2005 SRS-1 2005 QX56
DIAGNOSIS SENSOR UNIT .................................... 59 . SRS INSPECTION (FOR FRONTAL COLLI-
Removal and Installation ....................................... 59 . SION) ..................................................................61
.
REMOVAL .......................................................... 59
. For Side and Rollover Collision ..............................62 .
INSTALLATION ................................................... 59. WHEN SRS IS ACTIVATED IN THE SIDE OR
ECU DISCRIMINATED NO. ................................ 59 . ROLLOVER COLLISION ....................................62 .
OCCUPANT CLASSIFICATION SYSTEM CON- WHEN SRS IS NOT ACTIVATED IN THE SIDE
TROL UNIT ............................................................... 60
. OR ROLLOVER COLLISION ..............................62 .
Removal and Installation ....................................... 60 . SRS INSPECTION (FOR SIDE AND ROLLOVER
COLLISION DIAGNOSIS ......................................... 61 . COLLISION) ........................................................63.
For Frontal Collision ............................................... 61
.

Revision: October 2005 SRS-2 2005 QX56
PRECAUTIONS

PRECAUTIONS PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EHS0016A

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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 C
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING: D
G To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer. E
G Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. F
G Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
G
Precautions for SRS "AIR BAG" and "SEAT BELT PRE-TENSIONER" Service
EHS0016B

G Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual. SRS
G Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min-
utes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bags and seat belt I
pre-tensioners to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes
have passed.
G The air 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 J
before installation and replace as required.
G 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. K
G 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. L
G Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
G After air bag inflates, the front instrument panel assembly should be replaced if damaged.
M
Occupant Classification System Precaution EHS0016C

Replace control unit and passenger front seat cushion as an assembly.
Trouble Diagnosis Precaution EHS0016D

When you read wiring diagrams, refer to the following:
G GI-15, "How to Read Wiring Diagrams" in GI section
G PG-4, "POWER SUPPLY ROUTING CIRCUIT" in PG section
When you perform trouble diagnosis, refer to the following:
G GI-11, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES" in GI section
G GI-27, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section
Check for any service bulletins before servicing the vehicle.

Revision: October 2005 SRS-3 2005 QX56
PREPARATION

PREPARATION PFP:00002

Special Service Tools EHS0016E

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number Description
(Kent-Moore No.)
Tool name
-- Removing and installing air bag lock
(J-42057)
Air bag lock master key set

LRS210

Commercial Service Tools EHS0016F

Tool name
Description
(Kent-Moore No.)
Steering wheel puller Removing steering wheel
(J-1859A)

LHIA0043E

Steering wheel puller legs Removing steering wheel
(J-42578)

LHIA0044E

Revision: October 2005 SRS-4 2005 QX56
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

SUPPLEMENTAL RESTRAINT SYSTEM (SRS) PFP:28556
A
SRS Configuration EHS0016G

SRS

WHIA0215E

J
The air bag deploys if the air bag diagnosis sensor unit is activated while the ignition switch is in the ON or
START position.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module, front passenger air bag module, front seat belt pre-tensioners K
and seat belt buckle pre-tensioner assemblies are activated in a frontal collision but not in a side collision.
SRS configurations for some collision modes are as follows:
L
Right side colli-
SRS configuration Frontal collision Left side collision Rollover
sion
Driver air bag module x -- -- --
M
Front passenger air bag module x -- -- --
Front LH seat belt pre-tensioner x -- -- x
Front LH seat belt buckle pre-tensioner assembly x -- -- x
Front RH seat belt pre-tensioner x -- -- x
Front RH seat belt buckle pre-tensioner assembly x -- -- x
Front LH side air bag module -- x -- --
Front RH side air bag module -- -- x --
LH side front curtain air bag module -- x -- x
LH side rear curtain air bag module -- x -- x
RH side front curtain air bag module -- -- x x
RH side rear curtain air bag module -- -- x x

Revision: October 2005 SRS-5 2005 QX56
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

Front Seat Belt Pre-tensioner with Load Limiter EHS0016H

The seat belt pre-tensioner system with load limiter is installed for
both the driver's seat and the front passenger's seat. It operates
simultaneously with the SRS air bag system in the event of a frontal
collision with an impact exceeding a specified level.
When the frontal collision with an impact exceeding a specified level
occurs, seat belt slack resulting from clothing or other factors is
immediately taken up by the pre-tensioner. Vehicle passengers are
securely restrained.
When passengers in a vehicle are thrown forward in a collision and
the restraining force of the seat belt exceeds a specified level, the
load limiter permits the specified extension of the seat belt by the
SRS444
twisting of the ELR shaft, and a relaxation of the chest-area seat belt
web tension while maintaining force.
Front Side Air Bag EHS0016I

Front side air bag modules are built into the front seatback assemblies.
Vehicles with side air bags are equipped with labels as shown.

WHIA0008E

Side Curtain Air Bag EHS0016J

Side curtain air bag modules are located above the vehicle headlining.
Vehicles with side curtain air bags are equipped with labels as
shown.

WHIA0041E

Occupant Classification System EHS0016K

The occupant classification system identifies different size occupants, out of position occupants, and detects if
child seat is present in the front passenger seat. The occupant classification system receives inputs from the
occupant classification system sensor (located inside the passenger seat cushion assembly) and belt tension
sensor (part of the passenger front seat belt assembly and located at the belt anchor location). Depending on
classification of passenger, the occupant classification system sends a signal to the air bag diagnosis sensor
unit. The air bag diagnosis sensor unit uses this signal to determine deployment or non deployment of the pas-
senger front air bag in the event of a collision. Depending on the signal received, the air bag diagnosis sensor

Revision: October 2005 SRS-6 2005 QX56
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

unit can disable the passenger front air bag completely. If this occurs the air bag diagnosis sensor unit will turn
on the PASS AIR BAG OFF indicator located in the center of the instrument panel (cluster lid C). A

D
WHIA0187E

Direct-connect SRS Component Connectors EHS0016L
E
The following SRS components use direct-connect style harness connectors.
G Driver air bag module
G Front passenger air bag module F
G LH side front curtain air bag module
G LH side rear curtain air bag module
G RH side front curtain air bag module G
G RH side rear curtain air bag module
G Front LH seat belt pre-tensioner
SRS
G Front RH seat belt pre-tensioner
G Seat belt buckle pre-tensioner assembly LH
G Seat belt buckle pre-tensioner assembly RH I
Always pull up to release black locking tab prior to removing connector from SRS component.
Always push down to lock black locking tab after installing connector
to SRS component. When locked, the black locking tab is level with
J
the connector housing.

WHIA0103E

Revision: October 2005 SRS-7 2005 QX56
TROUBLE DIAGNOSIS

TROUBLE DIAGNOSIS PFP:00004

Trouble Diagnosis Introduction EHS0016M

CAUTION:
G Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness con-
nectors.
G Do not attempt to repair, splice or modify SRS wiring harnesses. If a harness is damaged, replace
it with a new one.
G Keep ground connections clean.
DIAGNOSIS FUNCTION
The SRS self-diagnosis results can be read by using "AIR BAG" warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function through the operation of the "AIR BAG" warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the "AIR BAG" warning lamp and CONSULT-II are as follows:
User mode Diagnosis mode Display type
"AIR BAG" warning lamp X X ON-OFF operation
CONSULT-II -- X Monitoring

HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Information From Customer
WHAT - Vehicle model
WHEN - Date, Frequencies
WHERE - Road conditions
HOW - Operating conditions, Symptoms
Preliminary Check
Check that the following parts are in good order.
G Battery (Refer to SC-4, "How to Handle Battery" .)
G Fuse (Refer to SRS-12, "Wiring Diagram-- SRS --" .)
G System component-to-harness connections

Revision: October 2005 SRS-8 2005 QX56
TROUBLE DIAGNOSIS

WORK FLOW
A

SRS

L
WHIA0098E

*1: SRS-8 *2: SRS-20 *3: SRS-31
*4: SRS-38 M

Revision: October 2005 SRS-9 2005 QX56
TROUBLE DIAGNOSIS

SRS Components Parts Location EHS0016N

WHIA0216E

1. Side curtain air bag modules 2. Front RH side air bag module 3. Belt tension sensor
4. RH side air bag (satellite) sensor 5. Front RH seat belt pre-ten- 6. Seat belt buckle pre-tensioner assembly
sioner RH
7. Occupant classification system sen- 8. Occupant classification system 9. Front passenger air bag off indicator
sor control unit
10. Front passenger air bag module 11. Crash zone sensor 12. Air bag warning lamp
13. Spiral cable 14. Driver air bag module 15. LH side air bag (satellite) sensor
16. Front LH seat belt pre-tensioner 17. Air bag diagnosis sensor unit 18. Front LH side air bag module

Revision: October 2005 SRS-10 2005 QX56
TROUBLE DIAGNOSIS

Schematic EHS0016O

SRS

WHWA0116E

Revision: October 2005 SRS-11 2005 QX56
TROUBLE DIAGNOSIS

Wiring Diagram-- SRS -- EHS0016P

WHWA0117E

Revision: October 2005 SRS-12 2005 QX56
TROUBLE DIAGNOSIS

SRS

WHWA0118E

Revision: October 2005 SRS-13 2005 QX56
TROUBLE DIAGNOSIS

WHWA0119E

Revision: October 2005 SRS-14 2005 QX56
TROUBLE DIAGNOSIS

SRS

WHWA0146E

Revision: October 2005 SRS-15 2005 QX56
TROUBLE DIAGNOSIS

WHWA0121E

Revision: October 2005 SRS-16 2005 QX56
TROUBLE DIAGNOSIS

SRS

WHWA0122E

Revision: October 2005 SRS-17 2005 QX56
TROUBLE DIAGNOSIS

CONSULT-II Function (AIR BAG) EHS001BA

CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
AIR BAG diagnostic mode Description
A current Self-diagnosis result (also indicated by the number of warning lamp flashes in the Diagnosis
SELF-DIAG [CURRENT] mode) is displayed on the CONSULT-II screen in real time. This refers to a malfunctioning part requir-
ing repairs.
Diagnosis results previously stored in the memory are displayed on the CONSULT-II screen. The
SELF-DIAG [PAST]
stored results will remain until memory erasing is executed.
With TROUBLE DIAG RECORD, diagnosis results previously erased by a reset operation can be dis-
TROUBLE DIAG RECORD
played on the CONSULT-II screen.
The air bag diagnosis sensor unit for each vehicle
model is assigned with its own, individual classifi-
cation number. This number will be displayed on
the CONSULT-II screen, as shown. When replac-
ing the air bag diagnosis sensor unit, refer to the
part number for the compatibility. After installation,
ECU DISCRIMINATED NO. replacement with a correct unit can be checked by
confirming this classification number on the CON-
SULT-II screen.
For INFINITI MODEL JA60, the air bag diagno-
sis sensor unit discriminated number assigned
is F62B.
ARS366

CONSULT-II Function EHS0016Q

HOW TO CHANGE SELF-DIAGNOSIS MODE WITH CONSULT-II
From User Mode to Diagnosis Mode
After selecting "AIR BAG" on the "SELECT SYSTEM" screen, User mode automatically changes to Diagnosis
mode.

SRS803

From Diagnosis Mode to User Mode
To return to User mode from Diagnosis mode, touch "BACK" key of CONSULT-II until "SELECT SYSTEM"
appears, Diagnosis mode automatically changes to User mode.

SRS804

Revision: October 2005 SRS-18 2005 QX56
TROUBLE DIAGNOSIS

HOW TO ERASE SELF-DIAGNOSIS RESULTS
G "SELF-DIAG [CURRENT]" A
A current self-diagnosis result is displayed on the CONSULT-II
screen in real time.
After the malfunction is repaired completely, no malfunction is B
detected on "SELF-DIAG [CURRENT]".

SRS701
D

G "SELF-DIAG [PAST]"
Return to the "SELF-DIAG [CURRENT]" CONSULT-II screen by E
touching "BACK" key of CONSULT-II and select "SELF-DIAG
[PAST]" in SELECT DIAG MODE. Touch "ERASE" in "SELF-
DIAG [PAST]" mode. F
NOTE:
If the memory of the malfunction in "SELF-DIAG [PAST]" is
not erased, the User mode will continue to show the system G
malfunction by the operation of the warning lamp even if
the malfunction is repaired completely.
SRS702
SRS

G "TROUBLE DIAG RECORD"
The memory of "TROUBLE DIAG RECORD" cannot be erased.
I
Self-Diagnosis Function (Without CONSULT-II) EHS0016R

G The reading of these results is accomplished using one of two modes -- "User mode" and "Diagnosis
mode". J
G After a malfunction is repaired, turn the ignition switch OFF for at least one second, then back ON. Diag-
nosis mode returns to the User mode. At that time, the self-diagnostic result is cleared.
K
HOW TO CHANGE SELF-DIAGNOSIS MODE

SHIA0183E

Revision: October 2005 SRS-19 2005 QX56
TROUBLE DIAGNOSIS

HOW TO ERASE SELF-DIAGNOSIS RESULTS
After a malfunction is repaired, turn the ignition switch OFF for at least one second, then back ON. Diagnosis
mode returns to the User mode. At that time, the self-diagnostic result is cleared.
SRS Operation Check EHS0016S

DIAGNOSTIC PROCEDURE 1
Checking SRS Operation Using "AIR BAG" Warning Lamp--User Mode
1. Turn the ignition switch from OFF to ON, and check that the air bag warning lamp blinks.
2. Compare the SRS air bag warning lamp blinking pattern with the
examples.

BF-1845D

Revision: October 2005 SRS-20 2005 QX56
TROUBLE DIAGNOSIS

Warning lamp examples
"AIR BAG" warning lamp operation-User mode- SRS condition Reference item
A

G No malfunction is detected.
-- C
G No further action is necessary.

SHIA0011E

F
Go to SRS-22, "DIAGNOSTIC
G The system is malfunctioning and
PROCEDURE 2" or SRS-38,
needs to be repaired as indicated.
"DIAGNOSTIC PROCEDURE 6" .
G

SHIA0012E SRS
G Air bag is deployed.
G Seat belt pre-tensioner is deployed. Go to SRS-61, "COLLISION DIAG-
G Seat belt buckle pre-tensioner NOSIS" . I
assembly is deployed.

G Air bag diagnosis sensor unit is mal-
J
functioning.
Go to SRS-44, "Trouble Diagnosis:
G Air bag power supply circuit is mal-
"AIR BAG" Warning Lamp Does Not
functioning.
Turn Off" .
G SRS air bag warning lamp circuit is K
malfunctioning.
SHIA0013E

G Air bag diagnosis sensor unit is mal- M
functioning. Go to SRS-45, "Trouble Diagnosis:
"AIR BAG" Warning Lamp Does Not
G Air bag warning lamp circuit is mal- Turn On" .
functioning.

SHIA0014E

Revision: October 2005 SRS-21 2005 QX56
TROUBLE DIAGNOSIS

Trouble Diagnosis With CONSULT-II EHS0016T

DIAGNOSTIC PROCEDURE 2
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunction might be detected
in self-diagnosis depending on control unit which carry out CAN communication.
1. Turn ignition switch OFF.
2. Connect CONSULT-II and CONSULT-II CONVERTER to the
data link connector.

BBIA0369E

3. Turn ignition switch ON.
4. Touch "START (NISSAN BASED VHCL)".

BCIA0029E

5. Touch "AIR BAG".
If "AIR BAG" is not indicated, refer to GI-39, "CONSULT-II Data
Link Connector (DLC) Circuit" .

BCIA0030E

6. Touch "SELF-DIAG [CURRENT]".

BCIA0031E

Revision: October 2005 SRS-22 2005 QX56
TROUBLE DIAGNOSIS

7. Diagnostic code is displayed on "SELF-DIAG [CURRENT]".
A

WHIA0151E

D
If no malfunction is detected on "SELF-DIAG [CURRENT]" even
though malfunction is detected in "SRS Operation Check", refer to
SRS-31, "DIAGNOSTIC PROCEDURE 4 (CONTINUED FROM E
DIAGNOSTIC PROCEDURE 2)" , to diagnose the following cases:
G Self-diagnostic result "SELF-DIAG [PAST]" (previously stored in
the memory) might not be erased after repair. F
G The SRS system malfunctions intermittently.

G
SRS701

SRS
CONSULT-II Diagnostic Code Chart ("SELF-DIAG [CURRENT]")
Repair order
Diagnostic item Explanation
Recheck SRS at each replacement
I
When malfunction is G Low battery voltage (Less than G Go to SRS-28, "DIAGNOSTIC PRO-
indicated by the "AIR 9V) CEDURE 3" .
BAG" warning lamp in
G Self-diagnostic result "SELF-DIAG G Go to SRS-31, "DIAGNOSTIC PRO-
User mode.
[PAST]" (previously stored in the CEDURE 4 (CONTINUED FROM
J
NO DTC IS DETECTED memory) might not be erased DIAGNOSTIC PROCEDURE 2)" .
after repair. G Go to SRS-31, "DIAGNOSTIC PRO-
G Intermittent malfunction has been CEDURE 5" . K
detected in the past.
G No malfunction is detected. --
DRIVER AIRBAG MODULE G Driver air bag module circuit is open (including the spiral 1. Visually check the wiring harness L
[OPEN] cable). connection.
[B1049] or [B1054] 2. Replace the harness if it has visible
DRIVER AIRBAG MODULE G Driver air bag module circuit is shorted to some power sup- damage. M
[VB-SHORT] ply circuit (including the spiral cable). 3. Replace driver air bag module.
[B1050] or [B1055] 4. Replace the spiral cable.
DRIVER AIRBAG MODULE G Driver air bag module circuit is shorted to ground (including 5. Replace the air bag diagnosis sen-
[GND-SHORT] the spiral cable). sor unit.
[B1051] or [B1056]
6. Replace the related harness.
DRIVER AIRBAG MODULE G Driver air bag module circuits are shorted to each other.
[SHORT]
[B1052] or [B1057]

Revision: October 2005 SRS-23 2005 QX56
TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement
ASSIST A/B MODULE G Front passenger air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1065] or [B1070] 2. Replace the harness if it has visible
ASSIST A/B MODULE G Front passenger air bag module circuit is shorted to some damage.
[VB-SHORT] power supply circuit. 3. Replace front passenger air bag
[B1066] or [B1071] module.
ASSIST A/B MODULE G Front passenger air bag module circuit is shorted to 4. Replace the air bag diagnosis sen-
[GND-SHORT] ground. sor unit.
[B1067] or [B1072] 5. Replace the related harness.
ASSIST A/B MODULE G Front passenger air bag module circuits are shorted to
[SHORT] each other.
[B1068] or [B1073]
G Crash zone sensor 1. Visually check the wiring harness
connection.
CRASH ZONE SEN
[UNIT FAIL] 2. Replace the harness if it has visible
[B1033] or [B1034] damage.
CRASH ZONE SEN 3. Replace the crash zone sensor.
[COMM FAIL] 4. Replace the air bag diagnosis sen-
[B1035] sor unit.
5. Replace the related harness.
SIDE MODULE LH G Front LH side air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1134] 2. Replace the harness if it has visible
SIDE MODULE LH G Front LH side air bag module circuit is shorted to some damage.
[VB-SHORT] power supply circuit. 3. Replace front LH seat back assem-
[B1135] bly (front LH side air bag module).
SIDE MODULE LH G Front LH side air bag module circuit is shorted to ground. 4. Replace the air bag diagnosis sen-
[GND-SHORT] sor unit.
[B1136] 5. Replace the related harness.
SIDE MODULE LH G Front LH side air bag module circuits are shorted to each
[SHORT] other.
[B1137]
SIDE MODULE RH G Front RH side air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1129] 2. Replace the harness if it has visible
SIDE MODULE RH G Front RH side air bag module circuit is shorted to some damage.
[VB-SHORT] power supply circuit. 3. Replace front RH seat back assem-
[B1130] bly (front RH side air bag module).
SIDE MODULE RH G Front RH side air bag module circuit is shorted to ground. 4. Replace the air bag diagnosis sen-
[GND-SHORT] sor unit.
[B1131] 5. Replace the related harness.
SIDE MODULE RH G Front RH side air bag module circuits are shorted to each
[SHORT] other.
[B1132]
G LH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
SATELLITE SENS LH 2. Replace the harness if it has visible
[UNIT FAIL] damage.
[B1118] or [B1119]
3. Replace the LH side air bag (satel-
SATELLITE SENS LH
lite) sensor.
[COMM FAIL]
[B1120] 4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness.

Revision: October 2005 SRS-24 2005 QX56
TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement A
G RH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
SATELLITE SENS RH 2. Replace the harness if it has visible B
[UNIT FAIL] damage.
[B1113] or [B1114]
3. Replace the RH side air bag (satel-
SATELLITE SENS RH
lite) sensor.
[COMM FAIL] C
[B1115] 4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness.
D
PRE-TEN FRONT LH G The circuit for front LH seat belt pre-tensioner is open. 1. Visually check the wiring harness
[OPEN] connections.
[B1086] 2. Replace the harness if it has visible
damage. E
PRE-TEN FRONT LH G The circuit for front LH seat belt pre-tensioner is shorted to
[VB-SHORT] some power supply circuit. 3. Replace front LH seat belt pre-ten-
[B1087] sioner.
PRE-TEN FRONT LH G The circuit for front LH seat belt pre-tensioner is shorted to 4. Replace the air bag diagnosis sen- F
[GND-SHORT] ground. sor unit.
[B1088] 5. Replace the related harness.
PRE-TEN FRONT LH G The circuits for the front LH seat belt pre-tensioner are G
[SHORT] shorted to each other.
[B1089]
PRE-TEN FRONT RH G The circuit for front RH seat belt pre-tensioner is open. 1. Visually check the wiring harness
SRS
[OPEN] connections.
[B1081] 2. Replace the harness if it has visible
PRE-TEN FRONT RH G The circuit for front RH seat belt pre-tensioner is shorted to damage.
[VB-SHORT] some power supply circuit. 3. Replace front RH seat belt pre-ten- I
[B1082] sioner.
PRE-TEN FRONT RH G The circuit for front RH seat belt pre-tensioner is shorted to 4. Replace the air bag diagnosis sen-
[GND-SHORT] ground. sor unit.

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