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

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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

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 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
● 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
● 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
● 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

● Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual. SRS
● 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.
● 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.
● 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
● 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
● 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.
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:

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

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 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

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 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

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 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

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 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.
● Driver air bag module
● Front passenger air bag module F
● LH side front curtain air bag module
● LH side rear curtain air bag module
● RH side front curtain air bag module G
● RH side rear curtain air bag module
● Front LH seat belt pre-tensioner
SRS
● Front RH seat belt pre-tensioner
● Seat belt buckle pre-tensioner assembly LH
● 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

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 TROUBLE DIAGNOSIS

TROUBLE DIAGNOSIS PFP:00004

Trouble Diagnosis Introduction EHS0016M

CAUTION:
● 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.
● Do not attempt to repair, splice or modify SRS wiring harnesses. If a harness is damaged, replace
it with a new one.
● 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.
● Battery (Refer to SC-4, "How to Handle Battery" .)
● Fuse (Refer to SRS-12, "Wiring Diagram— SRS —" .)
● System component-to-harness connections

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 TROUBLE DIAGNOSIS

WORK FLOW
A

SRS

L
WHIA0098E

*1: SRS-8 *2: SRS-20 *3: SRS-31

*4: SRS-38 M

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 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

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 TROUBLE DIAGNOSIS

Schematic EHS0016O

SRS

WHWA0116E

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 TROUBLE DIAGNOSIS

Wiring Diagram— SRS — EHS0016P

WHWA0117E

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 TROUBLE DIAGNOSIS

SRS

WHWA0118E

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 TROUBLE DIAGNOSIS

WHWA0119E

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 TROUBLE DIAGNOSIS

SRS

WHWA0146E

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 TROUBLE DIAGNOSIS

WHWA0121E

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 TROUBLE DIAGNOSIS

SRS

WHWA0122E

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 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

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 TROUBLE DIAGNOSIS

HOW TO ERASE SELF-DIAGNOSIS RESULTS

● “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

● “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

● “TROUBLE DIAG RECORD”

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

● The reading of these results is accomplished using one of two modes — “User mode” and “Diagnosis
mode”. J
● 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

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 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

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 TROUBLE DIAGNOSIS

Warning lamp examples

“AIR BAG” warning lamp operation-User mode- SRS condition Reference item
A

● No malfunction is detected.
— C
● No further action is necessary.

SHIA0011E

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

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

● Air bag diagnosis sensor unit is mal-

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

● Air bag diagnosis sensor unit is mal- M

functioning. Go to SRS-45, "Trouble Diagnosis:
“AIR BAG” Warning Lamp Does Not
● Air bag warning lamp circuit is mal- Turn On" .
functioning.

SHIA0014E

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 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

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 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:
● Self-diagnostic result "SELF-DIAG [PAST]" (previously stored in
the memory) might not be erased after repair. F
● 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 ● Low battery voltage (Less than ● Go to SRS-28, "DIAGNOSTIC PRO-
indicated by the “AIR 9V) CEDURE 3" .
BAG” warning lamp in
● Self-diagnostic result “SELF-DIAG ● 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. ● Go to SRS-31, "DIAGNOSTIC PRO-
● Intermittent malfunction has been CEDURE 5" . K
detected in the past.
● No malfunction is detected. —
DRIVER AIRBAG MODULE ● 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 ● 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 ● 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 ● Driver air bag module circuits are shorted to each other.
[SHORT]
[B1052] or [B1057]

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 TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement
ASSIST A/B MODULE ● 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 ● 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 ● 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 ● Front passenger air bag module circuits are shorted to
[SHORT] each other.
[B1068] or [B1073]
● 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 ● 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 ● 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 ● 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 ● Front LH side air bag module circuits are shorted to each
[SHORT] other.
[B1137]
SIDE MODULE RH ● 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 ● 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 ● 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 ● Front RH side air bag module circuits are shorted to each
[SHORT] other.
[B1132]
● 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.

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 TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement A
● 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 ● 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 ● 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 ● 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 ● The circuits for the front LH seat belt pre-tensioner are G
[SHORT] shorted to each other.
[B1089]
PRE-TEN FRONT RH ● 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 ● 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 ● The circuit for front RH seat belt pre-tensioner is shorted to 4. Replace the air bag diagnosis sen-
[GND-SHORT] ground. sor unit. J
[B1083] 5. Replace the related harness.
PRE-TEN FRONT RH ● The circuits for the front RH seat belt pre-tensioner are
[SHORT] shorted to each other. K
[B1084]
PRE-TEN2 FRONT LH ● The circuit for front LH seat belt buckle pre-tensioner is 1. Visually check the wiring harness
[OPEN] open. connections.
[B1182] L
2. Replace the harness if it has visible
PRE-TEN2 FRONT LH ● The circuit for front LH seat belt buckle pre-tensioner is damage.
[VB-SHORT] shorted to some power supply circuit. 3. Replace front LH seat belt buckle
[B1183] pre-tensioner. M
PRE-TEN2 FRONT LH ● The circuit for front LH seat belt buckle pre-tensioner is 4. Replace the air bag diagnosis sen-
[GND-SHORT] shorted to ground. sor unit.
[B1184] 5. Replace the related harness.
PRE-TEN2 FRONT LH ● The circuits for the front LH seat belt buckle pre-tensioner
[SHORT] are shorted to each other.
[B1185]

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 TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement
PRE-TEN2 FRONT RH ● The circuit for front RH seat belt buckle pre-tensioner is 1. Visually check the wiring harness
[OPEN] open. connections.
[B1177] 2. Replace the harness if it has visible
PRE-TEN2 FRONT RH ● The circuit for front RH seat belt buckle pre-tensioner is damage.
[VB-SHORT] shorted to some power supply circuit. 3. Replace front RH seat belt buckle
[B1178] pre-tensioner.
PRE-TEN2 FRONT RH ● The circuit for front RH seat belt buckle pre-tensioner is 4. Replace the air bag diagnosis sen-
[GND-SHORT] shorted to ground. sor unit.
[B1179] 5. Replace the related harness.
PRE-TEN2 FRONT RH ● The circuits for the front RH seat belt buckle pre-tensioner
[SHORT] are shorted to each other.
[B1180]
FR CURTN MODULE LH ● The LH side front curtain air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1198] 2. Replace the harness if it has visible
FR CURTN MODULE LH ● The LH side front curtain air bag module circuit is shorted damage.
[VB-SHORT] to some power supply circuits. 3. Replace LH side curtain air bag
[B1199] module.
FR CURTN MODULE LH ● The LH side front curtain air bag module circuit is shorted 4. Replace the air bag diagnosis sen-
[GND-SHORT] to ground. sor unit.
[B1200] 5. Replace the related harness.
FR CURTN MODULE LH ● The circuits for the LH side front curtain air bag module are
[SHORT] shorted to each other.
[B1201]
FR CURTN MODULE RH ● The RH side front curtain air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1193] 2. Replace the harness if it has visible
FR CURTN MODULE RH ● The RH side front curtain air bag module circuit is shorted damage.
[VB-SHORT] to some power supply circuits. 3. Replace RH side curtain air bag
[B1194] module.
FR CURTN MODULE RH ● The RH side front curtain air bag module circuit is shorted 4. Replace the air bag diagnosis sen-
[GND-SHORT] to ground. sor unit.
[B1195] 5. Replace the related harness.
FR CURTN MODULE RH ● The circuits for the RH side front curtain air bag module are
[SHORT] shorted to each other.
[B1196]
CURTAIN MODULE LH ● The LH side rear curtain air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1150] 2. Replace the harness if it has visible
CURTAIN MODULE LH ● The LH side rear curtain air bag module circuit is shorted to damage.
[VB-SHORT] some power supply circuits. 3. Replace LH side curtain air bag
[B1151] module.
CURTAIN MODULE LH ● The LH side rear curtain air bag module circuit is shorted to 4. Replace the air bag diagnosis sen-
[GND-SHORT] ground. sor unit.
[B1152] 5. Replace the related harness.
CURTAIN MODULE LH ● The circuits for the LH side rear curtain air bag module are
[SHORT] shorted to each other.
[B1153]

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 TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement A
CURTAIN MODULE RH ● The RH side rear curtain air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1145] 2. Replace the harness if it has visible B
CURTAIN MODULE RH ● The RH side rear curtain air bag module circuit is shorted damage.
[VB-SHORT] to some power supply circuits. 3. Replace RH side curtain air bag
[B1146] module.
C
CURTAIN MODULE RH ● The RH side rear curtain air bag module circuit is shorted 4. Replace the air bag diagnosis sen-
[GND-SHORT] to ground. sor unit.
[B1147] 5. Replace the related harness.
D
CURTAIN MODULE RH ● The circuits for the RH side rear curtain air bag module are
[SHORT] shorted to each other.
[B1148]
● Air bag diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness E
CONTROL UNIT connection.
[B1XXX] 2. Replace the air bag diagnosis sen-
sor unit. F
OCCUPANT SENS C/U ● Occupant classification system is malfunctioning. 1. Replace RH front seat cushion/
[UNIT FAIL] occupant classification system con-
[B1017], [B1020] or [B1021] trol unit assembly.
G
● Communication between the occupant classification sys- 1. Visually check the wiring harness
tem control unit and air bag diagnosis sensor unit is inter- connection.
rupted. 2. Replace the harness if it has visible
damage.
SRS
OCCUPANT SENS C/U
3. Replace RH front seat cushion/
[COMM FAIL]
occupant classification system con-
[B1022]
trol unit assembly. I
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness. J
OCCUPANT SENS ● Occupant classification sensor is malfunctioning. 1. Replace RH front seat cushion/
[UNIT FAIL] occupant classification system con-
[B1018] trol unit assembly.
K
● Belt tension sensor is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
L
BELT TENSION SENS
3. Replace RH front seat belt assem-
[UNIT FAIL]
bly.
[B1019]
4. Replace RH front seat cushion/ M
occupant classification system con-
trol unit assembly.
5. Replace the related harness.
● Front passenger air bag off indicator is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible
damage.
PASS A/B INDCTR CKT
3. Replace front passenger air bag off
[B1023]
indicator.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness.
FRONTAL COLLISION ● Driver and front passenger air bag modules are deployed. 1. Refer to SRS-61, "COLLISION
DETECTION DIAGNOSIS" .
[B1209]

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 TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement
SIDE COLLISION ● Side or curtain air bag modules are deployed. 1. Refer to SRS-61, "COLLISION
DETECTION DIAGNOSIS" .
[B1210]
ROLLOVER DETECTION ● Curtain air bag module and seat belt pre-tensioner are 1. Refer to SRS-61, "COLLISION
[B1211] deployed. DIAGNOSIS" .
NOTE:
Follow the procedures in numerical order when repairing malfunctioning parts. Confirm whether malfunction is
eliminated using air bag warning lamp or CONSULT-II each time repair is finished. If malfunction is still
observed, proceed to the next step. When malfunction is eliminated, further repair work is not required.
DIAGNOSTIC PROCEDURE 3
Final Check of SRS Using CONSULT-II—Diagnosis Mode
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. After repairing SRS, connect both battery cables.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector.
3. Turn ignition switch ON.

BBIA0369E

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

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 TROUBLE DIAGNOSIS

6. Touch “SELF-DIAG [CURRENT]”.

A

BCIA0031E

D
7. If no malfunction is detected on “SELF-DIAG [CURRENT]”,
repair of SRS is completed. Go to step 8.
If any malfunction is detected on “SELF-DIAG [CURRENT]”, the
E
malfunctioning part is not repaired completely or another mal-
functioning part is detected. Go to SRS-22, "DIAGNOSTIC
PROCEDURE 2" , and repair malfunctioning part completely.
F

G
SRS701

8. Touch “ERASE”.
SRS
NOTE:
Touch “ERASE” to clear the memory of the malfunction
(“SELF-DIAG [PAST]”).
If the memory of the malfunction in “SELF-DIAG [PAST]” is not I
erased, the User mode shows the system malfunction by the
operation of the warning lamp even if the malfunction is repaired
completely. J

WHIA0152E
K

9. Touch “BACK” key of CONSULT-II to “SELECT DIAG MODE”

screen. Touch “SELF-DIAG [PAST]”. L

BCIA0031E

10. Check that no malfunction is detected on “SELF-DIAG [PAST]”.

11. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears in order to return to User mode from Diagnosis mode.
12. Turn ignition switch OFF then turn off and disconnect CON-
SULT-II.
13. Go to SRS-20, "Checking SRS Operation Using “AIR BAG”
Warning Lamp—User Mode" .

SRS702

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 TROUBLE DIAGNOSIS

Revision: October 2005 SRS-30 2005 QX56

 TROUBLE DIAGNOSIS

DIAGNOSTIC PROCEDURE 4 (CONTINUED FROM DIAGNOSTIC PROCEDURE 2)

Check SRS Repair History A

1. CONSIDER POSSIBILITY THAT SELF-DIAGNOSTIC RESULT WAS NOT ERASED AFTER REPAIR B
Check repair history of the SRS.
Have any previous repairs been made to the SRS?
C
Yes >> Self-diagnostic result “SELF-DIAG [PAST]” (previously stored in the memory) might not be erased
after repair. Go to SRS-28, "DIAGNOSTIC PROCEDURE 3" .
No >> Go to SRS-22, "DIAGNOSTIC PROCEDURE 2" .
D
DIAGNOSTIC PROCEDURE 5
Check SRS Intermittent Malfunction Using CONSULT-II—Diagnosis Mode
CAUTION: E
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.
F
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector.
G

SRS

I
BBIA0369E

3. Turn ignition switch ON. J

4. Touch “START (NISSAN BASED VHCL)”.

M
BCIA0029E

5. Touch “AIR BAG”.

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

BCIA0030E

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 TROUBLE DIAGNOSIS

6. Touch “SELF-DIAG [PAST]”.

BCIA0031E

7. If diagnostic codes are displayed on “SELF-DIAG [PAST]”, go to

step 10.

WHIA0152E

If no malfunction is detected on “SELF-DIAG [PAST]”, touch

“BACK” and go back to “SELECT DIAG MODE”.

SRS702

8. Touch “TROUBLE DIAG RECORD”.

NOTE:
With “TROUBLE DIAG RECORD”, diagnosis results previ-
ously erased by a reset operation can be displayed.

BCIA0031E

9. Diagnostic code is displayed on “TROUBLE DIAG RECORD”.

10. Touch “PRINT”.
11. Compare diagnostic codes to SRS-33, "CONSULT-II Diagnostic
Code Chart ("SELF-DIAG [PAST]" or "TROUBLE DIAG
RECORD")" .
12. Touch “BACK” key of CONSULT-II until “SELECT SYSTEM”
appears.
13. Turn ignition switch OFF, then turn off and disconnect CON-
SULT-II, and both battery cables.
WHIA0153E

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 TROUBLE DIAGNOSIS

14. Repair the system as outlined by the “Repair order” in “Intermittent Malfunction Diagnostic Code Chart”,
that corresponds to the self-diagnostic result. For replacement procedure of component parts, refer to the A
Removal and Installation procedure for the appropriate component.
15. Go to SRS-28, "DIAGNOSTIC PROCEDURE 3" , for final checking.
CONSULT-II Diagnostic Code Chart ("SELF-DIAG [PAST]" or "TROUBLE DIAG RECORD") B

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement
C
When malfunction is ● Low battery voltage (Less than ● Go to SRS-28, "DIAGNOSTIC PRO-
indicated by the “AIR 9V) CEDURE 3" .
BAG” warning lamp in
● Self-diagnostic result “SELF-DIAG ● Go to SRS-31, "DIAGNOSTIC PRO-
User mode. D
[PAST]” (previously stored in the CEDURE 4 (CONTINUED FROM
NO DTC IS DETECTED memory) might not be erased DIAGNOSTIC PROCEDURE 2)" .
after repair. ● Go to SRS-31, "DIAGNOSTIC PRO-
● Intermittent malfunction has been CEDURE 5" . E
detected in the past.
● No malfunction is detected. —
DRIVER AIRBAG MODULE ● Driver air bag module circuit is open (including the spiral 1. Visually check the wiring harness F
[OPEN] cable). connection.
[B1049] or [B1054] 2. Replace the harness if it has visible
DRIVER AIRBAG MODULE ● Driver air bag module circuit is shorted to some power sup- damage.
G
[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 ● Driver air bag module circuit is shorted to ground (including 5. Replace the air bag diagnosis sen-
[GND-SHORT] the spiral cable). SRS
sor unit.
[B1051] or [B1056]
6. Replace the related harness.
DRIVER AIRBAG MODULE ● Driver air bag module circuits are shorted to each other.
[SHORT] I
[B1052] or [B1057]
ASSIST A/B MODULE ● Front passenger air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection. J
[B1065] or [B1070] 2. Replace the harness if it has visible
ASSIST A/B MODULE ● 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] K
module.
ASSIST A/B MODULE ● 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. L
ASSIST A/B MODULE ● Front passenger air bag module circuits are shorted to
[SHORT] each other.
[B1068] or [B1073] M
● 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.

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 TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement
SIDE MODULE LH ● 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 ● 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 ● 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 ● Front LH side air bag module circuits are shorted to each
[SHORT] other.
[B1137]
SIDE MODULE RH ● 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 ● 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 ● 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 ● Front RH side air bag module circuits are shorted to each
[SHORT] other.
[B1132]
● 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.
● RH side air bag (satellite) sensor 1. Visually check the wiring harness
connection.
SATELLITE SENS RH 2. Replace the harness if it has visible
[UNIT FAIL] damage.
[B1113] or [B1114]
3. Replace the RH side air bag (satel-
SATELLITE SENS RH
lite) sensor.
[COMM FAIL]
[B1115] 4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness.
PRE-TEN FRONT LH ● 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
PRE-TEN FRONT LH ● The circuit for front LH seat belt pre-tensioner is shorted to damage.
[VB-SHORT] some power supply circuit. 3. Replace front LH seat belt pre-ten-
[B1087] sioner.
PRE-TEN FRONT LH ● The circuit for front LH seat belt pre-tensioner is shorted to 4. Replace the air bag diagnosis sen-
[GND-SHORT] ground. sor unit.
[B1088] 5. Replace the related harness.
PRE-TEN FRONT LH ● The circuits for the front LH seat belt pre-tensioner are
[SHORT] shorted to each other.
[B1089]

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 TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement A
PRE-TEN FRONT RH ● The circuit for front RH seat belt pre-tensioner is open. 1. Visually check the wiring harness
[OPEN] connections.
[B1081] 2. Replace the harness if it has visible B
PRE-TEN FRONT RH ● 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-
[B1082] sioner.
C
PRE-TEN FRONT RH ● The circuit for front RH seat belt pre-tensioner is shorted to 4. Replace the air bag diagnosis sen-
[GND-SHORT] ground. sor unit.
[B1083] 5. Replace the related harness.
D
PRE-TEN FRONT RH ● The circuits for the front RH seat belt pre-tensioner are
[SHORT] shorted to each other.
[B1084]
PRE-TEN2 FRONT LH ● The circuit for front LH seat belt buckle pre-tensioner is 1. Visually check the wiring harness E
[OPEN] open. connections.
[B1182] 2. Replace the harness if it has visible
PRE-TEN2 FRONT LH ● The circuit for front LH seat belt buckle pre-tensioner is damage. F
[VB-SHORT] shorted to some power supply circuit. 3. Replace front LH seat belt buckle
[B1183] pre-tensioner.
PRE-TEN2 FRONT LH ● The circuit for front LH seat belt buckle pre-tensioner is 4. Replace the air bag diagnosis sen-
G
[GND-SHORT] shorted to ground. sor unit.
[B1184] 5. Replace the related harness.
PRE-TEN2 FRONT LH ● The circuits for the front LH seat belt buckle pre-tensioner
[SHORT] are shorted to each other. SRS
[B1185]
PRE-TEN2 FRONT RH ● The circuit for front RH seat belt buckle pre-tensioner is 1. Visually check the wiring harness
[OPEN] open. connections. I
[B1177] 2. Replace the harness if it has visible
PRE-TEN2 FRONT RH ● The circuit for front RH seat belt buckle pre-tensioner is damage.
[VB-SHORT] shorted to some power supply circuit. 3. Replace front RH seat belt buckle J
[B1178] pre-tensioner.
PRE-TEN2 FRONT RH ● The circuit for front RH seat belt buckle pre-tensioner is 4. Replace the air bag diagnosis sen-
[GND-SHORT] shorted to ground. sor unit.
[B1179]
K
5. Replace the related harness.
PRE-TEN2 FRONT RH ● The circuits for the front RH seat belt buckle pre-tensioner
[SHORT] are shorted to each other.
[B1180] L
FR CURTN MODULE LH ● The LH side front curtain air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1198] 2. Replace the harness if it has visible M
FR CURTN MODULE LH ● The LH side front curtain air bag module circuit is shorted damage.
[VB-SHORT] to some power supply circuits. 3. Replace LH side curtain air bag
[B1199] module.
FR CURTN MODULE LH ● The LH side front curtain air bag module circuit is shorted 4. Replace the air bag diagnosis sen-
[GND-SHORT] to ground. sor unit.
[B1200] 5. Replace the related harness.
FR CURTN MODULE LH ● The circuits for the LH side front curtain air bag module are
[SHORT] shorted to each other.
[B1201]

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 TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement
FR CURTN MODULE RH ● The RH side front curtain air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1193] 2. Replace the harness if it has visible
FR CURTN MODULE RH ● The RH side front curtain air bag module circuit is shorted damage.
[VB-SHORT] to some power supply circuits. 3. Replace RH side curtain air bag
[B1194] module.
FR CURTN MODULE RH ● The RH side front curtain air bag module circuit is shorted 4. Replace the air bag diagnosis sen-
[GND-SHORT] to ground. sor unit.
[B1195] 5. Replace the related harness.
FR CURTN MODULE RH ● The circuits for the RH side front curtain air bag module are
[SHORT] shorted to each other.
[B1196]
CURTAIN MODULE LH ● The LH side rear curtain air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1150] 2. Replace the harness if it has visible
CURTAIN MODULE LH ● The LH side rear curtain air bag module circuit is shorted to damage.
[VB-SHORT] some power supply circuits. 3. Replace LH side curtain air bag
[B1151] module.
CURTAIN MODULE LH ● The LH side rear curtain air bag module circuit is shorted to 4. Replace the air bag diagnosis sen-
[GND-SHORT] ground. sor unit.
[B1152] 5. Replace the related harness.
CURTAIN MODULE LH ● The circuits for the LH side rear curtain air bag module are
[SHORT] shorted to each other.
[B1153]
CURTAIN MODULE RH ● The RH side rear curtain air bag module circuit is open. 1. Visually check the wiring harness
[OPEN] connection.
[B1145] 2. Replace the harness if it has visible
CURTAIN MODULE RH ● The RH side rear curtain air bag module circuit is shorted damage.
[VB-SHORT] to some power supply circuits. 3. Replace RH side curtain air bag
[B1146] module.
CURTAIN MODULE RH ● The RH side rear curtain air bag module circuit is shorted 4. Replace the air bag diagnosis sen-
[GND-SHORT] to ground. sor unit.
[B1147] 5. Replace the related harness.
CURTAIN MODULE RH ● The circuits for the RH side rear curtain air bag module are
[SHORT] shorted to each other.
[B1148]
● Air bag diagnosis sensor unit is malfunctioning. 1. Visually check the wiring harness
CONTROL UNIT connection.
[B1XXX] 2. Replace the air bag diagnosis sen-
sor unit.
OCCUPANT SENS C/U ● Occupant classification system is malfunctioning. 1. Replace RH front seat cushion/
[UNIT FAIL] occupant classification system con-
[B1017], [B1020] or [B1021] trol unit assembly.
● Communication between the occupant classification sys- 1. Visually check the wiring harness
tem control unit and air bag diagnosis sensor unit is inter- connection.
rupted. 2. Replace the harness if it has visible
damage.
OCCUPANT SENS C/U
3. Replace RH front seat cushion/
[COMM FAIL]
occupant classification system con-
[B1022]
trol unit assembly.
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness.
OCCUPANT SENS ● Occupant classification sensor is malfunctioning. 1. Replace RH front seat cushion/
[UNIT FAIL] occupant classification system con-
[B1018] trol unit assembly.

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 TROUBLE DIAGNOSIS

Repair order
Diagnostic item Explanation
Recheck SRS at each replacement A
● Belt tension sensor is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible B
damage.
BELT TENSION SENS
3. Replace RH front seat belt assem-
[UNIT FAIL]
bly.
[B1019] C
4. Replace RH front seat cushion/
occupant classification system con-
trol unit assembly.
5. Replace the related harness. D
● Front passenger air bag off indicator is malfunctioning. 1. Visually check the wiring harness
connection.
2. Replace the harness if it has visible E
damage.
PASS A/B INDCTR CKT
3. Replace front passenger air bag off
[B1023]
indicator. F
4. Replace the air bag diagnosis sen-
sor unit.
5. Replace the related harness.
G
FRONTAL COLLISION ● Driver and front passenger air bag modules are deployed. 1. Refer to SRS-61, "COLLISION
DETECTION DIAGNOSIS" .
[B1209]
SRS
SIDE COLLISION ● Side or curtain air bag modules are deployed. 1. Refer to SRS-61, "COLLISION
DETECTION DIAGNOSIS" .
[B1210]
ROLLOVER DETECTION ● Curtain air bag module and seat belt pre-tensioner are 1. Refer to SRS-61, "COLLISION
I
[B1211] deployed. DIAGNOSIS" .

Revision: October 2005 SRS-37 2005 QX56

 TROUBLE DIAGNOSIS

Trouble Diagnosis Without CONSULT-II EHS0016U

DIAGNOSTIC PROCEDURE 6
Inspect SRS Malfunction Using "AIR BAG" Warning Lamp—Diagnosis Mode
NOTE:
SRS will not enter Diagnosis mode if no malfunction is detected in User mode.
1. Turn ignition switch ON.
2. After “AIR BAG” warning lamp lights for 7 seconds, turn ignition switch OFF within 1 second.
3. Wait more than 3 seconds.
4. Repeat steps 1 to 3 two more times (3 times total).
5. Turn ignition switch ON.
SRS is now in Diagnosis mode.
"AIR BAG" warning lamp operates in Diagnosis mode as follows:

Revision: October 2005 SRS-38 2005 QX56

 TROUBLE DIAGNOSIS

WARNING LAMP FLASH CODE CHART

A

SHIA0026E D

WHIA0197E
SRS

K
WHIA0198E

WHIA0199E

Revision: October 2005 SRS-39 2005 QX56

 TROUBLE DIAGNOSIS

WHIA0200E

WHIA0201E

WHIA0217E

WHIA0202E

Revision: October 2005 SRS-40 2005 QX56

 TROUBLE DIAGNOSIS

WHIA0218E
D

G
WHIA0203E

SRS

K
WHIA0204E

WHIA0205E

Revision: October 2005 SRS-41 2005 QX56

 TROUBLE DIAGNOSIS

WHIA0206E

WHIA0207E

WHIA0208E

WHIA0209E

Revision: October 2005 SRS-42 2005 QX56

 TROUBLE DIAGNOSIS

WHIA0210E
D

G
WHIA0211E

SRS

K
WHIA0212E

Revision: October 2005 SRS-43 2005 QX56

 TROUBLE DIAGNOSIS

Trouble Diagnosis: “AIR BAG” Warning Lamp Does Not Turn Off EHS0016V

DIAGNOSTIC PROCEDURE 6
1. CHECK CONDITION OF AIR BAG MODULE
Inspect for any deployed air bag modules or seat belt pre-tensioners.
Are any air bag modules or seat belt pre-tensioners deployed?
Yes >> Refer to SRS-61, "COLLISION DIAGNOSIS" .
No >> GO TO 2.

2. CHECK THE AIR BAG FUSE

Check 10A fuse [No. 13, located in the fuse block (J/B)].
Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.

3. CHECK AIR BAG FUSE AGAIN

Replace 10A fuse [No. 13, located in the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?
Yes >> Repair main harness.
No >> Inspection End.

4. CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Connect CONSULT-II and touch “START”.

Is “AIR BAG” displayed on CONSULT-II?
Yes >> GO TO 5.
No >> Visually inspect the air bag diagnosis sensor unit har-
ness connections. If the connections are OK, replace
the air bag diagnosis sensor unit. Refer to SRS-59,
"Removal and Installation" .

BCIA0030E

5. CHECK HARNESS CONNECTION

Check for loose connections between the combination meter and the air bag diagnosis sensor unit.
OK or NG
OK >> Replace air bag diagnosis sensor unit. Refer to SRS-59, "Removal and Installation" .
NG >> Properly connect the combination meter and air bag diagnosis sensor unit harness connectors. If
“AIR BAG” warning lamp still does not turn off, replace the wiring harness.

Revision: October 2005 SRS-44 2005 QX56

 TROUBLE DIAGNOSIS

Trouble Diagnosis: “AIR BAG” Warning Lamp Does Not Turn On EHS0016W

DIAGNOSTIC PROCEDURE 7 A

1. CHECK METER FUSE

Check the 10A fuse [No. 14, located in the fuse block (J/B)]. B
Refer to PG-4, "POWER SUPPLY ROUTING CIRCUIT" .
OK or NG
OK >> GO TO 3. C
NG >> GO TO 2.

2. CHECK METER FUSE AGAIN D

Replace 10A fuse [No. 14, located in the fuse block (J/B)] and turn ignition switch ON.
Does the fuse blow again?
E
Yes >> Repair the related harness.
No >> Inspection End.

3. CHECK HARNESS CONNECTION BETWEEN AIR BAG DIAGNOSIS SENSOR UNIT AND COMBINA- F
TION METER
Disconnect the air bag diagnosis sensor unit harness connectors and turn ignition switch ON. G
Does “AIR BAG” warning lamp turn on?
Yes >> Replace the air bag diagnosis sensor unit. Refer to SRS-59, "Removal and Installation" .
No >> Check the combination meter ground circuits. SRS

Revision: October 2005 SRS-45 2005 QX56

 DRIVER AIR BAG MODULE

DRIVER AIR BAG MODULE PFP:K8510

Removal and Installation EHS0016X

WHIA0159E

1. Horn harness 2. Steering wheel hook 3. Inflator harness

4. Side lids RH/LH 5. Driver air bag module 6. Steering wheel

REMOVAL
CAUTION:
● Do not attempt to repair or replace damaged direct-connect SRS component connectors. If a
driver air bag direct-connect harness connector is damaged, the spiral cable must be replaced.
● Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at
least 3 minutes.
● When servicing the SRS, do not work from directly in front of air bag module.
1. Remove the left and right side lids and bolts.

WHIA0184E

2. Lift the driver air bag module from the steering wheel.
3. Disconnect the horn connector and air bag harness, then remove the driver air bag module.
● For removal/installation of the direct-connect SRS connectors, refer to SRS-7, "Direct-connect SRS
Component Connectors" .

CAUTION:
● When servicing the SRS, do not work from directly in front of air bag module.

Revision: October 2005 SRS-46 2005 QX56

 DRIVER AIR BAG MODULE

● Always place air bag module with pad side facing upward.
● Do not insert any foreign objects (screwdriver, etc.) into air A
bag module or harness connectors.
● Do not disassemble air bag module.
● Do not use old bolts after removal; replace with new bolts. B
● Do not expose the air bag module to temperatures exceed-
ing 90°C (194°F).
C

LHIA0052E

D
● Replace the air bag module if it has been dropped or sus-
tained an impact.
● Do not allow oil, grease or water to come in contact with the E
air bag module.

G
SBF814E

SRS
INSTALLATION
Installation is in the reverse order of removal.
● If driver air bag module is being replaced due to deployment, spiral cable must also be replaced. Refer to
I
SRS-48, "SPIRAL CABLE" .
● For removal/installation of the direct-connect SRS connectors, refer to SRS-7, "Direct-connect SRS Com-
ponent Connectors" .
J
● After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS-20, "SRS Operation Check" .

Revision: October 2005 SRS-47 2005 QX56

 SPIRAL CABLE

SPIRAL CABLE PFP:25554

Removal and Installation EHS0016Y

WHIA0233E

1. Steering wheel 2. Lighting and turn signal switch 3. Wiper and washer switch
4. Spiral cable 5. Driver air bag module connector 6. Column cover upper
7. Column assembly 8. Column cover lower 9. Screw (Do not remove)
10. Screw

REMOVAL
CAUTION:
● Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at
least 3 minutes.
● When servicing the SRS, do not work from directly in front of air bag module.
1. Set the front wheels in the straight-ahead position.
2. Remove driver air bag module. Refer to SRS-46, "Removal and Installation" .
3. Remove the steering wheel center nut.
4. Remove the steering wheel using Tool.
Tool number: A: J-1859A
B: J-42578
5. Remove the column cover upper and lower.

WHIA0124E

Revision: October 2005 SRS-48 2005 QX56

 SPIRAL CABLE

6. Remove wiper washer switch connector, then pinch the tabs at

wiper and washer switch base and slide switch away from steer- A
ing column to remove.

LHIA0034E

D
7. While pressing tabs, pull lighting and turn signal switch toward
driver door and disconnect from base.
E

G
LHIA0035E

8. Remove the screws, release the clip, and remove the spiral SRS
cable.
CAUTION:
● Do not disassemble spiral cable. I
● Do not apply lubricant to the spiral cable.

K
LHIA0036E

9. Remove the spiral cable connectors.

L
CAUTION:
With the steering linkage disconnected, the spiral cable may snap by turning the steering wheel
beyond the limited number of turns. The spiral cable can be turned counterclockwise about 2.5
turns from the neutral position. M

INSTALLATION
Installation is in the reverse order of removal.
● Align spiral cable correctly when installing steering wheel. Make
sure that the spiral cable is in the neutral position. The neutral
position is detected by turning left 2.6 revolutions from the right
end position and ending with the knob at the top.
● If equipped with VDC, refer to BRC-62, "Adjustment of Steering
Angle Sensor Neutral Position" for steering angle sensor adjust-
ment.
● After the work is completed, perform self-diagnosis to make sure
no malfunction is detected. Refer to SRS-20, "SRS Operation
Check" . WGIA0038E

Revision: October 2005 SRS-49 2005 QX56

 SPIRAL CABLE

CAUTION:
● The spiral cable may snap due to steering operation if the
cable is not installed in the correct position.
● With the steering linkage disconnected, the cable may snap
by turning the steering wheel beyond the limited number of
turns. The spiral cable can be turned counterclockwise
about 2.5 turns from the right end position.
Steering wheel center nut : 34 N·m (3.5 kg-m, 25 ft-lb)

PHIA0275E

Revision: October 2005 SRS-50 2005 QX56

 FRONT PASSENGER AIR BAG MODULE

FRONT PASSENGER AIR BAG MODULE PFP:K8515

A
Removal and Installation EHS0016Z

The passenger air bag module originally installed in the vehicle uses direct-connect style harness connectors.
Service replacement passenger air bag modules use tab-locking style harness connectors. If the passenger B
air bag module is replaced or if the direct-connect harness connectors are damaged, the vehicle wiring har-
ness must be modified to allow connection of the service replacement passenger air bag module. Refer to
SRS-52, "WIRING HARNESS MODIFICATION" for wiring harness modification procedure.
C
REMOVAL
CAUTION:
● Do not attempt to repair or replace damaged direct-connect front passenger air bag module con- D
nectors. If a direct-connect harness connector is damaged, the front passenger air bag must be
replaced and the wiring harness modified.
● Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least E
3 minutes.
● Always work from the side of or under front passenger air bag module.
1. Remove the glove box. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" . F
2. Remove 2 nuts (through glove box opening) retaining front pas-
senger air bag module to instrument panel crossmember.
3. Disconnect the air bag module electrical connectors. G
● For removal/installation of the direct-connect SRS connec-
tors, refer to SRS-7, "Direct-connect SRS Component Con-
nectors" .
SRS
4. Remove the instrument panel assembly from the vehicle. Refer
to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
5. Remove front passenger air bag module nuts and remove air
I
bag module from the instrument panel assembly. WHIA0110E

CAUTION: J
● When servicing the SRS, do not work from directly in front
of air bag module.
● Always place front passenger air bag module with caution K
label side facing upward.
● Do not insert any foreign objects (screwdriver, etc.) into air
bag module or harness connectors. L
● Do not disassemble air bag module.
● Do not use old nuts after removal; replace with new nuts.
● Do not expose the front passenger air bag module to tem- M
peratures exceeding 90°C (194°F). WHIA0111E

● Replace the air bag module if it has been dropped or sus-

tained an impact.
● Do not allow oil, grease or water to come in contact with the
air bag module.
● For removal/installation of the direct-connect SRS connec-
tors, refer to SRS-7, "Direct-connect SRS Component Con-
nectors" .

SBF814E

INSTALLATION
Original Passenger Air Bag Module
To install, reverse the removal procedure.

Revision: October 2005 SRS-51 2005 QX56

 FRONT PASSENGER AIR BAG MODULE

● For removal/installation of the direct-connect SRS connectors, refer to SRS-7, "Direct-connect SRS Com-
ponent Connectors" .
CAUTION:
● Always work from the side of or under front passenger air bag module.
● After the work is completed, perform self-diagnosis to check that no malfunction is detected.
Refer to SRS-20, "SRS Operation Check" .
Service Replacement Passenger Air Bag Module
1. Install the front passenger air bag module to the instrument
panel pad assembly.

WHIA0110E

2. Install the instrument panel assembly. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
3. Connect the front passenger air bag module harness connector to yellow 4-pin service replacement air
bag connector and fasten connector to mounting bracket.

CAUTION:
● Always work from the side of or under front passenger air bag module.
● After the work is completed, perform self-diagnosis to check that no malfunction is detected.
Refer to SRS-20, "SRS Operation Check" .
WIRING HARNESS MODIFICATION
The passenger air bag module originally installed in the vehicle uses direct-connect style harness connectors.
Service replacement passenger air bag modules use tab-locking style harness connectors. If the passenger
air bag module is replaced or if the direct-connect harness connectors are damaged, the vehicle wiring har-
ness must be modified to allow connection of the service replacement passenger air bag module.
NOTE:
The wiring harness modification is to be performed only if the vehicle is equipped with the original passenger
air bag which uses direct-connect harness connectors. If the passenger air bag is to be replaced in a vehicle
that has already had the service replacement passenger air bag installed, the wiring harness modification is
not required.
CAUTION:
● Do not attempt to repair or replace damaged direct-connect front passenger air bag module con-
nectors. If a direct-connect harness connector is damaged, the front passenger air bag must be
replaced and the wiring harness modified.
● Before servicing SRS, turn the ignition switch off, disconnect both battery cables and wait at least
3 minutes.
● Always work from the side of or under front passenger air bag module.
● After the work is completed, perform self-diagnosis to check that no malfunction is detected.
Refer to SRS-20, "SRS Operation Check" .
1. Locate the yellow and orange direct-connect passenger air bag module harness connectors.
2. Use wire cutters to cut back both previously used direct-connect passenger air bag module harness con-
nectors from the vehicle wiring harness approximately 50 mm (1.9 in) from the connectors.
3. Remove approximately 150 mm (5.9 in) of the vehicle harness covering from the cut end.

Revision: October 2005 SRS-52 2005 QX56

 FRONT PASSENGER AIR BAG MODULE

4. Slide a piece of dual-wall heat shrink tubing (provided in the pas-

senger air bag service kit) onto each wire of the previously used A
vehicle wiring harness.

LHIA0017E

D
5. Fold each wire back and insert into the end of the heat shrink
tubing so that the end of the wire is approximately centered in
the heat shrink tubing. E

G
WHIA0062E

6. Use a heat gun to shrink the heat shrink tubing and seal the wire. SRS
7. Use electrical tape to secure the modified circuits to the outside of the wiring harness.
8. Locate the front passenger air bag service replacement connec-
I
tor that is taped back to the main harness. Unwrap the tape to
access the yellow service replacement connector and remove
the dust cover from the connector.
J

WHIA0118E
L

Revision: October 2005 SRS-53 2005 QX56

 SIDE CURTAIN AIR BAG MODULE

SIDE CURTAIN AIR BAG MODULE PFP:985P0

Removal and Installation EHS00171

LHIA0079E

REMOVAL
CAUTION:
● Do not attempt to repair or replace damaged direct-connect SRS component connectors. If a
direct-connect harness connector is damaged, the harness must be replaced.
● Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
● When servicing the SRS, do not work from directly in front of air bag module.
1. Remove headlining. Refer to EI-38, "Removal and Installation" .
2. Disconnect front and rear side curtain air bag module connectors.
● For removal/installation of the direct-connect SRS connectors, refer to SRS-7, "Direct-connect SRS
Component Connectors" .
3. Remove the bolts in order starting at the front or rear, and remove the side curtain air bag module.

CAUTION:
● When servicing the SRS, do not work from directly in front of air bag module.
● Do not insert any foreign objects (screwdriver, etc.) into air bag module or harness connectors.
● Do not disassemble air bag module.
● Do not expose the air bag module to temperatures exceeding 90°C (194°F).
● Replace side curtain air bag module if it has been dropped
or sustained an impact.
● Do not allow oil, grease or water to come in contact with the
air bag module.

SBF814E

INSTALLATION
To install, reverse the removal procedure.
● For removal/installation of the direct-connect SRS connectors, refer to SRS-7, "Direct-connect SRS Com-
ponent Connectors" .
Revision: October 2005 SRS-54 2005 QX56
 SIDE CURTAIN AIR BAG MODULE

● After replacement of side curtain air bag module, perform self-diagnosis to check that no malfunction is
detected. Refer to SRS-20, "SRS Operation Check" . A

SRS

Revision: October 2005 SRS-55 2005 QX56

 CRASH ZONE SENSOR

CRASH ZONE SENSOR PFP:98531

Removal and Installation EHS00172

REMOVAL
CAUTION:
● Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
1. Remove front grille. Refer to EI-17, "FRONT GRILLE" .
2. Disconnect the crash zone sensor harness connector.
3. Remove crash zone sensor nuts.

LHIA0056E

CAUTION:
● Replace crash zone sensor if it has been dropped or sustained an impact.
● Do not disassemble crash zone sensor.
INSTALLATION
To install, reverse the removal procedure.
● After the work is complete, perform self-diagnosis to check that no malfunction is detected. Refer to SRS-
20, "SRS Operation Check" .

Revision: October 2005 SRS-56 2005 QX56

 SIDE AIR BAG (SATELLITE) SENSOR

SIDE AIR BAG (SATELLITE) SENSOR PFP:98830

A
Removal and Installation EHS00173

REMOVAL
CAUTION: B
● Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at
least 3 minutes.
1. Remove seat belt pre-tensioner. Refer to SB-3, "Removal and
Installation of Front Seat Belt" . C
2. Remove side air bag (satellite) sensor nuts.
3. Disconnect the side air bag (satellite) sensor harness connector.
D

LHIA0062E
F

CAUTION:
● Do not use old nuts after removal; replace with new nuts.
G
● Check side air bag (satellite) sensor to ensure it is free of deformities, dents, cracks or rust. If it
shows any visible signs of damage, replace it with new one.
● Do not disassemble side air bag (satellite) sensor.
SRS
● Replace side air bag (satellite) sensor if it has been dropped or sustained an impact.

INSTALLATION I
To install, reverse the removal procedure.
● After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS-20, "SRS Operation Check" . J

Revision: October 2005 SRS-57 2005 QX56

 FRONT SEAT BELT PRE-TENSIONER

FRONT SEAT BELT PRE-TENSIONER PFP:86884

Removal and Installation EHS00174

For removal and installation procedures for seat belt and seat belt buckle pre-tensioners, refer to SB-3,
"Removal and Installation of Front Seat Belt" .

Revision: October 2005 SRS-58 2005 QX56

 DIAGNOSIS SENSOR UNIT

DIAGNOSIS SENSOR UNIT PFP:28556

A
Removal and Installation EHS00175

REMOVAL
B

G
LHIA0063E

CAUTION:
● Before servicing the SRS, turn the ignition switch off, disconnect both battery cables and wait at SRS
least 3 minutes.
1. Disconnect the harness connectors for each air bag module and seat belt pre-tensioner.
2. Remove center console. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" . I
3. Disconnect diagnosis sensor unit harness connectors.
4. Remove fixing bolts from the diagnosis sensor unit.
J
CAUTION:
● Do not use old bolts; replace with new bolts.
● Check diagnosis sensor unit bracket to ensure it is free of deformities, dents, cracks or rust. If it
shows any visible signs of damage, replace with new one. K
● Replace diagnosis sensor unit if it has been dropped or sustained an impact.

L
INSTALLATION
To install, reverse the removal procedure.
● After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to M
SRS-20, "SRS Operation Check" .
CAUTION:
● The diagnosis sensor unit must always be installed with the arrow mark "⇐" pointing toward the
front of the vehicle for proper operation.

ECU DISCRIMINATED NO.

After replacing the diagnosis sensor unit, confirm that the diagnosis sensor unit identification is correct for the
vehicle as equipped. Refer to SRS-18, "CONSULT-II Function (AIR BAG)" .

Revision: October 2005 SRS-59 2005 QX56

 OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT

OCCUPANT CLASSIFICATION SYSTEM CONTROL UNIT PFP:98852

Removal and Installation EHS00176

The occupant classification control unit, occupant classification (pressure) sensor, and bladder are an integral
part of the front passenger seat cushion and are replaced as an assembly. Refer to SE-100, "REMOVAL" to
remove the seat, and SE-102, "SEAT CUSHION TRIM AND PAD (DRIVER) OR SEAT CUSHION ASSEMBLY
(PASSENGER)" to replace the seat cushion.

Revision: October 2005 SRS-60 2005 QX56

 COLLISION DIAGNOSIS

COLLISION DIAGNOSIS PFP:00015

A
For Frontal Collision EHS001SN

Check the SRS components using the following table.

● After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to B
SRS-20, "SRS Operation Check" .
SRS INSPECTION (FOR FRONTAL COLLISION)
C
Part SRS is activated SRS is NOT activated
Driver air bag module If the driver air bag If the driver air bag has NOT been activated:
has deployed: 1. Remove driver air bag module. Check harness cover and connectors for damage,
REPLACE D
terminals for deformities, and harness for binding.
Install with new fas-
2. Install driver air bag module into the steering wheel to check fit and alignment with
teners.
the wheel.
E
3. If no damage is found, reinstall with new fasteners.
4. If damaged—REPLACE. Install driver air bag modules with new fasteners.
Front passenger air If the front passenger If the front passenger air bag has NOT been activated:
bag module air bag has deployed: F
1. Remove front passenger air bag module. Check harness cover and connectors for
REPLACE damage, terminals for deformities, and harness for binding.
Install with new fas-
2. Install front passenger air bag module into the instrument panel to check fit with the
teners.
instrument panel. G
3. If no damage is found, reinstall with new fasteners.
4. If damaged—REPLACE. Install front passenger air bag modules with new fasten-
ers. SRS
Crash zone sensor If any of the front air If the front air bags or seat belt pre-tensioners have NOT been activated:
bags or seat belt pre- 1. Remove the crash zone sensor. Check harness connectors for damage, terminals
tensioners* have for deformities, and harness for binding. I
been activated:
2. Check for visible signs of damage (dents, cracks, deformation) of the crash zone
REPLACE the crash
sensor and bracket.
zone sensor and
bracket with new fas- 3. Install the crash zone sensor to check fit. J
teners. 4. If no damage is found, reinstall with new fasteners.
5. If damaged—REPLACE the crash zone sensor and bracket with new fasteners.
*: Confirm seat belt
pre-tensioner activa- K
tion using CONSULT-
II only.
Seat belt pre-ten- If either the driver or If the pre-tensioners have NOT been activated: L
sioner assemblies passenger seat belt 1. Remove seat belt pre-tensioners.
(All applicable loca- pre-tensioner* has Check harness cover and connectors for damage, terminals for deformities, and
tions: buckle, reel, lap been activated: harness for binding.
outer) REPLACE all seat M
2. Check belts for damage and anchors for loose mounting.
belt pre-tensioner
assemblies with new 3. Check retractor for smooth operation.
fasteners. 4. Check seat belt adjuster for damage.
5. Check for deformities of the center pillar inner.
*: Confirm seat belt
pre-tensioner activa- 6. If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner
tion using CONSULT- assembly.
II only. 7. If no damage is found, reinstall seat belt pre-tensioner assembly.
8. If damaged—REPLACE. Install the seat belt pre-tensioners with new fasteners.
Diagnosis sensor unit If any of the SRS If none of the SRS components have been activated:
components have 1. Check case for dents, cracks or deformities.
been activated:
2. Check connectors for damage, and terminals for deformities.
REPLACE the diag-
nosis sensor unit. 3. If no damage is found, reinstall with new fasteners.
Install with new fas- 4. If damaged—REPLACE. Install diagnosis sensor unit with new fasteners.
teners.

Revision: October 2005 SRS-61 2005 QX56

 COLLISION DIAGNOSIS

Part SRS is activated SRS is NOT activated

Steering wheel 1. Visually check steering wheel for deformities.
2. Check harness (built into steering wheel) and connectors for damage, and terminals for deformities.
3. Install driver air bag module into the steering wheel to check fit and alignment with the wheel.
4. Check steering wheel for excessive free play.
5. If no damage is found, reinstall.
6. If damaged—REPLACE.
Spiral cable If the driver front air If the driver front air bag has not deployed:
bag has deployed: 1. Visually check spiral cable and combination switch for damage.
REPLACE the spiral
2. Check connectors and protective tape for damage.
cable.
3. Check steering wheel for noise, binding or heavy operation.
4. If no damage is found, reinstall.
5. If damaged—REPLACE.
Occupant classifica- 1. Remove passenger seat.
tion system (Passen- 2. Check control unit case for dents, cracks of deformities.
ger seat)
3. Check connectors and pressure sensor tube for damage, and terminals for deformities.
4. Check seat frame and cushion pan for dents or deformities.
5. If no damage is found, reinstall seat with new fasteners.
6. If damaged — REPLACE seat cushion assembly with new fasteners.
Harness and connec- 1. Check connectors for poor connection, damage, and terminals for deformities.
tors 2. Check harness for binding, chafing, cuts, or deformities.
3. If no damage is found, reinstall the harness and connectors.
4. If damaged—REPLACE the damaged harness. Do not attempt to repair, splice or modify any SRS harness.
Instrument panel If the passenger front If the passenger front air bag has NOT deployed:
air bag has deployed: 1. Visually check instrument panel for damage.
REPLACE the instru-
2. If no damage is found, reinstall the instrument panel.
ment panel assembly.
3. If damaged—REPLACE the instrument panel.

For Side and Rollover Collision EHS001SO

Check the SRS components using the following table.

● After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS-20, "SRS Operation Check" .
WHEN SRS IS ACTIVATED IN THE SIDE OR ROLLOVER COLLISION
1. Replace the following components:
– Front seat back assembly (on the side on which side air bag is activated)
– Diagnosis sensor unit
– (LH or RH) side air bag (satellite) sensor (on the side on which side air bag is activated)
2. Check the SRS components and the related parts using the following table.
– Replace any SRS components and the related parts showing visible signs of damage (dents, cracks,
deformation).
3. Conduct self-diagnosis using CONSULT-II and “AIR BAG” warning lamp. Refer to SRS-20, "SRS Opera-
tion Check" for details. Ensure entire SRS operates properly.
WHEN SRS IS NOT ACTIVATED IN THE SIDE OR ROLLOVER COLLISION
1. Check the SRS components and the related parts using the following table.
– If the front seat back assembly is damaged, the front seat back assembly must be replaced.
2. Conduct self-diagnosis using CONSULT-II and “AIR BAG” warning lamp. Refer to SRS-20, "SRS Opera-
tion Check" for details. Ensure entire SRS operates properly.

Revision: October 2005 SRS-62 2005 QX56

 COLLISION DIAGNOSIS

SRS INSPECTION (FOR SIDE AND ROLLOVER COLLISION)

Part SRS is activated SRS is NOT activated
A

LH side curtain air If the LH side curtain If the LH side curtain air bag has NOT deployed:
bag module air bag has deployed: 1. Check for visible signs of damage (dents, tears, deformation) of the center pillar on
REPLACE the LH the collision side.
B
side curtain air bag
2. If damaged—Remove the LH side curtain air bag module.
module. (Repair the
center pillar inner, etc. 3. Check for visible signs of damaged (tears etc.) of the LH side curtain air bag mod-
before installing new ule. C
one if damaged.) 4. Check harness and connectors for damage, and terminals for deformities.
5. If no damage is found, reinstall the LH side curtain air bag module with new fasten-
ers. D
6. If damaged—REPLACE the LH side curtain air bag module with new fasteners.
RH side curtain air If the RH side curtain If the RH side curtain air bag has NOT deployed:
bag module air bag has deployed: 1. Check for visible signs of damage (dents, tears, deformation) of the center pillar on E
REPLACE the RH the collision side.
side curtain air bag
2. If damaged—Remove the RH side curtain air bag module.
module. (Repair the
center pillar inner, etc. 3. Check for visible signs of damaged (tears etc.) of the RH side curtain air bag mod- F
before installing new ule.
one if damaged.) 4. Check harness and connectors for damage, and terminals for deformities.
5. If no damage is found, reinstall the RH side curtain air bag module with new fasten- G
ers.
6. If damaged—REPLACE the RH side curtain air bag module with new fasteners.
Front LH side air bag If the front LH side air If the front LH side air bag has NOT deployed: SRS
module bag has deployed: 1. Check for visible signs of damage (dents, tears, deformation) of the seat back on
REPLACE front LH the collision side.
seatback assembly.
2. Check harness and connectors for damage, and terminals for deformities.
I
3. If damaged—REPLACE the front LH seatback assembly.
Front RH side air bag If the front RH side air If the front RH side air bag has NOT deployed:
module bag has deployed: 1. Check for visible signs of damage (dents, tears, deformation) of the seat back on J
REPLACE front RH the collision side.
seatback assembly.
2. Check harness and connectors for damage, and terminals for deformities.
3. If damaged—REPLACE the front RH seatback assembly. K
(LH or RH) side air If any of the SRS If none of the SRS components have been activated:
bag (satellite) sensor components have 1. Remove the side air bag (satellite) sensor on the collision side. Check harness
deployed: connectors for damage, terminals for deformities, and harness for binding.
REPLACE the side L
2. Check for visible signs of damage (dents, cracks, deformation) of the side air bag
air bag (satellite) sen-
(satellite) sensor.
sor on the collision
side with new fasten- 3. Install the side air bag (satellite) sensor to check fit.
M
ers. (Repair the cen- 4. If no damage is found, reinstall the side sir bag (satellite) sensor with new fasten-
ter pillar inner, etc. ers.
before installing new
5. If damaged—REPLACE the side air bag (satellite) sensor with new fasteners.
one if damaged.)
Diagnosis sensor unit If any of the SRS If none of the SRS components have been activated:
components have 1. Check case and bracket for dents, cracks or deformities.
deployed:
2. Check connectors for damage, and terminals for deformities.
REPLACE the diag-
nosis sensor unit with 3. If no damage is found, reinstall the diagnosis sensor unit with new fasteners.
new fasteners. 4. If damaged—REPLACE the diagnosis sensor unit with new fasteners.

Revision: October 2005 SRS-63 2005 QX56

 COLLISION DIAGNOSIS

Part SRS is activated SRS is NOT activated

Seat belt pre-ten- If either the driver or If the pre-tensioners have NOT been activated:
sioner assemblies passenger seat belt 1. Remove seat belt pre-tensioners.
(All applicable loca- pre-tensioner* has Check harness cover and connectors for damage, terminals for deformities, and
tions: buckle, reel, lap been activated: harness for binding.
outer) REPLACE all seat
2. Check belts for damage and anchors for loose mounting.
belt pre-tensioner
assemblies with new 3. Check retractor for smooth operation.
fasteners. 4. Check seat belt adjuster for damage.
5. Check for deformities of the center pillar inner.
*: Confirm seat belt
pre-tensioner activa- 6. If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner
tion using CONSULT- assembly.
II only. 7. If no damage is found, reinstall seat belt pre-tensioner assembly.
8. If damaged—REPLACE. Install the seat belt pre-tensioners with new fasteners.
Seat (with front side If either the front LH If the front LH or front RH side air bag modules have NOT deployed:
air bag) or front RH side air 1. Visually check the seat on the collision side.
bag modules has
2. Remove the seat on the collision side and check the following for damage and
been deployed:
deformities.
REPLACE front seat-
back assembly on the – Harness, connectors and terminals
deployed side. – Frame and recliner (for front and rear seat), and also adjuster and slides (for front
seat)
3. If no damage is found, reinstall the seat.
4. If damaged—REPLACE the damaged seat parts using new fasteners. If the front
seat back is damaged, the front seat back assembly must be replaced.
Center inner pillar 1. Check the center inner pillar on the collision side for damage (dents, cracks, deformation).
2. If damaged—REPAIR the center inner pillar.
Trim/headlining 1. Check for visible signs of damage (dents, cracks, deformation) of the interior trim on the collision side.
2. If damaged—REPLACE the damaged trim parts.

Revision: October 2005 SRS-64 2005 QX56