SRS-1
RESTRAINTS
C
DE
F
G
I
J
K L
M
SECTION SRS
A
B
SRS
N
O P
CONTENTS
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
PRECAUTION ....... ........................................2
PRECAUTIONS .............................................. .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution for SRS "AIR BAG" and "SEAT BELT
PRE-TENSIONER" Service ......................................
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
Occupant Classification System Precaution .............3
SYMPTOM DIAGNOSIS ...............................4
SUPPLEMENTAL RESTRAINT SYSTEM
(SRS) .............................................................. .....
4
SRS Configuration .............................................. ......4
Driver Air Bag Module ...............................................5
Front Passenger Air Bag Module ..............................5
Front Side Air Bag ............................................... ......5
Side Curtain Air Bag ..................................................5
Front Seat Belt Pre-tensioner with Load Limiter .......6
Occupant Classification System (OCS) ....................6
Direct-connect SRS Component Connectors ............7
TROUBLE DIAGNOSIS ......................................8
Trouble Diagnosis Introduction ........................... ......8
SRS Component Parts Location .............................10
Schematic ...............................................................11
Wiring Diagram - SRS- ............................................12
CONSULT-III Function (AIR BAG) ..........................17
Self-Diagnosis Function (Without CONSULT-III) ....18
SRS Operation Check ......................................... ....19
Trouble Diagnosis with CONSULT-III .....................20
Trouble Diagnosis without CONSULT-III ................28
Trouble Diagnosis: "AIR BAG" Warning Lamp
Does Not Turn Off ...................................................
31
Trouble Diagnosis: "AIR BAG" Warning Lamp
Does Not Turn On ............................................... ....
32
ON-VEHICLE REPAIR .................................34
DRIVER AIR BAG MODULE ............................34
Removal and Installation ..................................... ....34
SPIRAL CABLE ................................................37
Removal and Installation .........................................37
FRONT PASSENGER AIR BAG MODULE ......39
Removal and Installation .........................................39
SIDE CURTAIN AIR BAG MODULE ................40
Component ..............................................................40
Removal and Installation .........................................40
CRASH ZONE SENSOR ...................................42
Removal and Installation ..................................... ....42
SIDE AIR BAG (SATELLITE) SENSOR ...........43
Removal and Installation .........................................43
FRONT SEAT BELT PRE-TENSIONER ...........44
Removal and Installation .........................................44
DIAGNOSIS SENSOR UNIT .............................45
Removal and Installation .........................................45
OCCUPANT CLASSIFICATION SYSTEM
CONTROL UNIT ................................................
47
Removal and Installation .........................................47
COLLISION DIAGNOSIS ..................................48
For Frontal Collision ................................................48
For Side and Rollover Collision ...............................50
Revision: January 20102010 Versa
SRS-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000005716108
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and w hether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS and SB section of this Service Man-
ual.
WARNING:
• To avoid rendering the SRS inopera tive, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintent ional activation of the system. For re moval of Spiral Cable and Air Bag
Module, see the SRS section.
• Do not use electrical test equipmen t on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harn esses can be identified by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or electri c power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery, and wait at least 3 minu tes before performing any service.
Precaution for SRS "AIR BAG" and "S EAT BELT PRE-TENSIONER" Service
INFOID:0000000005396892
• Do not use electrical test equipment to check SRS ci rcuits unless instructed to in this Service Manual.
• Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min- utes.
For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-
tensioner to deploy. Therefore, do not work on any SR S connectors or wires until at least 3 minutes have
passed.
• The air bag diagnosis sensor unit must always be installed with the arrow mark “ ⇐” pointing toward the front
of the vehicle for proper operation. Also check air bag diagnosis sensor unit for cracks, deformities or rust
before installation and replace as required.
• The spiral cable must be aligned with the neutral position since its rotations are limited. Do not attempt to
turn steering wheel or column after removal of steering gear.
• Handle air bag module carefully. Always place driver and front passenger air bag modules with the pad side facing upward and seat mounted front side air bag module standing with the stud bolt side facing down.
• Conduct self-diagnosis to check entire SRS for proper function after replacing any components.
• After air bag inflates, the front instrument panel assembly should be replaced if damaged.
• Do not reuse center pillar upper garnish if removed.
Precaution Necessary for Steering W heel Rotation After Battery Disconnect
INFOID:0000000005396893
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NATS (NISSAN ANTI-THEFT SYS-
TEM).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK ″ position.
Revision: January 20102010 Versa
SRS-8
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
Trouble Diagnosis IntroductionINFOID:0000000005396903
CAUTION:
• Do not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Service Manual.
• 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 usi ng “AIR BAG” warning lamp and/or CONSULT-III.
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-III are as follows:
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 malf unction. 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-5, "
How to Handle Battery".)
• Fuses (Refer to SRS-11, "
Schematic".)
• System component-to-harness connections
WORK FLOW
User mode Diagnosis mode Display type
“AIR BAG” warning lamp XXON-OFF operation
CONSULT-III —XMonitoring
Revision: January 20102010 Versa
SRS-12
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
Wiring Diagram - SRS-
INFOID:0000000005396906
WHWA0297E
Revision: January 20102010 Versa
TROUBLE DIAGNOSISSRS-21
< SYMPTOM DIAGNOSIS >
C
DE
F
G
I
J
K L
M A
B
SRS
N
O P
CONSULT-III Diagnostic Code
Chart ("SELF-DIAG [CURRENT]")
Diagnostic item Explanation Repair order
Recheck SRS at each replacement
NO DTC IS DETECTED Malfunction is indicat-
ed by the “AIR BAG”
warning lamp in User
mode.Low battery voltage (Less than 9V) 1. Go to
SC-5
2. Go to "DIAGNOSTIC PROCE-
DURE 3" .
“SELF-DIAG [PAST]” memory might
not be erased. Go to "DIAGNOSTIC PROCEDURE 4"
.
Intermittent malfunction has been
detected in the past. Go to "DIAGNOSTIC PROCEDURE 5"
.
No malfunction is detected in User mode. —
DRIVER AIRBAG MODULE [OPEN]
[B1049] or [B1054] Driver air bag module circuit is open (including the spiral ca-
ble).
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi- ble damage.
3. Replace driver air bag module.
4. Replace the spiral cable.
5. Replace the air bag diagnosis sensor unit.
6. Replace the related harness.
DRIVER AIRBAG MODULE
[VB-SHORT]
[B1050] or [B1055] Driver air bag module circuit is shorted to some power supply
circuit (including the spiral cable).
DRIVER AIRBAG MODULE [GND-SHORT]
[B1051] or [B1056] Driver air bag module circuit is shorted to ground (including
the spiral cable).
DRIVER AIRBAG MODULE [SHORT]
[B1052] or [B1057] Driver air bag module circuits are shorted to each other.
ASSIST A/B MODULE [OPEN]
[B1065] or [B1070] Front passenger air bag module circuit is open.
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace front passenger air bag module.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
ASSIST A/B MODULE
[VB-SHORT]
[B1066] or [B1071] Front passenger air bag module circuit is shorted to some
power supply circuit.
ASSIST A/B MODULE [GND-SHORT]
[B1067] or [B1072] Front passenger air bag module circuit is shorted to ground.
ASSIST A/B MODULE [SHORT]
[B1068] or [B1073] Front passenger air bag module circuits are shorted to each
other.
CRASH ZONE SEN [UNIT FAIL]
[B1033] or [B1034]
CRASH ZONE SEN
[COMM FAIL][B1035] Crash zone sensor
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi- ble damage.
3. Replace the crash zone sensor.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness.
SIDE MODULE LH [OPEN][B1134] Front LH side air bag module circuit is open.
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi- ble damage.
3. Replace front LH seat back as- sembly (front LH side air bag
module).
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
SIDE MODULE LH
[VB-SHORT]
[B1135] Front LH side air bag module circuit is shorted to some power
supply circuit.
SIDE MODULE LH [GND-SHORT] [B1136] Front LH side air bag module circuit is shorted to ground.
SIDE MODULE LH [SHORT][B 1
137] Front LH side air bag module circuits are shorted to each oth-
er.
Revision: January 20102010 Versa
SRS-22
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
SIDE MODULE RH[OPEN][B1129] Front RH side air bag module circuit is open.
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi- ble damage.
3. Replace front RH seat back as- sembly (front RH side air bag
module).
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
SIDE MODULE RH
[VB-SHORT]
[B1130] Front RH side air bag module circuit is shorted to some power
supply circuit.
SIDE MODULE RH [GND-SHORT] [B1131] Front RH side air bag module circuit is shorted to ground.
SIDE MODULE RH [SHORT][B1132] Front RH side air bag module circuits are shorted to each oth-
er.
SATELLITE SENS LH [UNIT FAIL]
[B1118] or [B1119]
SATELLITE SENS LH [COMM FAIL]
[B1120] LH side air bag (satellite) sensor
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi- ble damage.
3. Replace the LH side air bag (sat-
ellite) sensor.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
SATELLITE SENS RH [UNIT FAIL]
[B1113] or [B1114]
SATELLITE SENS RH [COMM FAIL][ B 111 5 ] RH side air bag (satellite) sensor
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi-
ble damage.
3. Replace the RH side air bag (sat- ellite) sensor.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
PRE-TEN FRONT LH [OPEN]
[B1086] The circuit for front LH seat belt pre-tensioner is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visi- ble damage.
3. Replace front LH seat belt pre- tensioner.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness.
PRE-TEN FRONT LH
[VB-SHORT]
[B1087] The circuit for front LH seat belt pre-tensioner is shorted to
some power supply circuit.
PRE-TEN FRONT LH [GND-SHORT] [B1088] The circuit for front LH seat belt pre-tensioner is shorted to
ground.
PRE-TEN FRONT LH [SHORT]
[B1089] The circuits for the front LH seat belt pre-tensioner are shorted
to each other.
PRE-TEN FRONT RH [OPEN]
[B1081] The circuit for front RH seat belt pre-tensioner is open. 1. Visually check the wiring harness
connections.
2. Replace the harness if it has visi-
ble damage.
3. Replace front RH seat belt pre- tensioner.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
PRE-TEN FRONT RH
[VB-SHORT][B1082] The circuit for front RH seat belt pre-tensioner is shorted to
some power supply circuit.
PRE-TEN FRONT RH [GND-SHOR
T]
[B1083] The circuit for front RH seat belt pre-tensioner is shorted to
ground.
PRE-TEN FRONT RH [SHORT][B1084] The circuits for the front RH seat belt pre-tensioner are short-
ed to each other.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement
Revision: January 20102010 Versa
TROUBLE DIAGNOSISSRS-23
< SYMPTOM DIAGNOSIS >
C
DE
F
G
I
J
K L
M A
B
SRS
N
O P
CURTAIN MODULE LH [OPEN][B1150] The LH side curtain air bag module circuit is open.
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi- ble damage.
3. Replace LH side curtain air bag module.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness.
CURTAIN MODULE LH
[VB-SHORT]
[B1151] The LH side curtain air bag module circuit is shorted to some
power supply circuits.
CURTAIN MODULE LH [GND-SHORT][B1152] The LH side curtain air bag module circuit is shorted to
ground.
CURTAIN MODULE LH [SHORT][B1153] The circuits for the LH side curtain air bag module are shorted
to each other.
CURTAIN MODULE RH [OPEN]
[B1145] The RH side curtain air bag module circuit is open.
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi- ble damage.
3. Replace RH side curtain air bag
module.
4. Replace the air bag diagnosis sensor unit.
5. Replace the related harness.
CURTAIN MODULE RH
[VB-SHORT][B1146] The RH side curtain air bag module circuit is shorted to some
power supply circuits.
CURTAIN MODULE RH [GND-SHORT][B1147] The RH side curtain air bag module circuit is shorted to
ground.
CURTAIN MODULE RH [SHORT]
[B1148] The circuits for the RH side curtain air bag module are shorted
to each other.
CONTROL UNIT [B1XXX] Air bag diagnosis sensor unit is malfunctioning.
1. Visually check the wiring harness
connection.
2. Replace the air bag diagnosis
sensor unit.
OCCUPANT SENS C/U [UNIT FAIL]
[B1017] or [B1021] The OCS control unit is malfunctioning.
1. Replace RH front seat cushion/
occupant classification system
control unit assembly.
OCCUPANT SENS C/U [UNIT FAIL]
[B1020] The OCS control unit is malfunctioning.
1. Replace the harness if it has visi-
ble damage.
2. Replace the RH front seat cush- ion assembly. Do not disassem-
ble the seat cushion assembly.
3. Replace the RH front seat belt as- sembly.
OCCUPANT SENS C/U [COMM FAIL][B1022] Communication between the OCS control unit and air bag di-
agnosis sensor unit is interrupted.
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi- ble damage.
3. Replace the RH front seat cush-
ion assembly. Do not disassem-
ble the seat cushion assembly.
4. Replace the air bag diagnosis
sensor unit.
5. Replace the related harness.
OCCUPANT SENS [UNIT FAIL][B1018] OCS sensor is malfunctioning.
1. Visually check the wiring harness
connection to the OCS sensor.
2. Replace the RH front seat cush- ion assembly. Do not disassem-
ble the seat cushion assembly.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement
Revision: January 20102010 Versa
SRS-24
< SYMPTOM DIAGNOSIS >
TROUBLE DIAGNOSIS
NOTE:
Follow the procedures in numerical order when performing repairs. Confirm whether the repair has been suc-
cessful using air bag warning lamp or CONSULT-III after each repair. If malfunction is still observed, proceed
to the next step. When malfunction has been elimi nated, further repair work is not required.
DIAGNOSTIC PROCEDURE 3
Final Check of SRS Using CONSULT-III—Diagnosis Mode
1. If no DTC is detected on “SELF-DIAG [CURRENT]”, repair of SRS is completed. Go to step 2.
If any DTC is detected on “SELF-DIAG [CURRENT]” , the malfunctioning part has not been repaired com-
pletely or another malfunctioning part is being detected. Go to "DIAGNOSTIC PROCEDURE 2".
2. Touch “ERASE”. NOTE:
Touch “ERASE” to clear the memory of the malfunction (“SELF-DIAG [PAST]”).
If the memory of the malfunction in “SELF-DIAG [P AST]” is not erased, the User mode shows the system
malfunction by the operation of the warning lamp even if the malfunction is repaired completely.
3. Touch “BACK” key of CONSULT-III to “SELECT DIAG MODE” screen. Touch “SELF-DIAG [PAST]”.
4. Check that no malfunction is detected on “SELF-DIAG [PAST]”.
5. Touch “BACK” key of CONSULT-III until “SELECT SY STEM” appears in order to return to User mode from
Diagnosis mode.
6. Turn ignition switch OFF then turn off and disconnect CONSULT-III.
7. Go to SRS-19, "
SRS Operation Check".
DIAGNOSTIC PROCEDURE 4
Check SRS Repair History
1.CONSIDER POSSIBILITY THAT SELF-DIAGNOSTIC RESULT WAS NOT ERASED AFTER REPAIR
Check repair history of the SRS.
Have any previous repairs been made to the SRS?
Yes >> Self-diagnostic result “SELF-DIAG [PAST]” (pre viously stored in the memory) might not be erased
after repair. Go to "DIAGNOSTIC PROCEDURE 3".
No >> Go to "DIAGNOSTIC PROCEDURE 2".
DIAGNOSTIC PROCEDURE 5
Check SRS Intermittent Malfuncti on Using CONSULT-III—Diagnosis Mode
1. If diagnostic codes are displayed on “SELF-DIAG [PAST]”, go to step 4.
If no malfunction is detected on “SELF-DIAG [PAS T]”, touch “BACK” and go back to “SELECT DIAG
MODE”.
BELT TENSION SENS
[UNIT FAIL]
[B1019] Belt tension sensor is malfunctioning.
1. Visually check the wiring harness
connection.
2. Replace the harness if it has visi- ble damage.
3. Replace the RH front seat belt as- sembly.
4. Replace the RH front seat cush-
ion assembly. Do not disassem-
ble the seat cushion assembly.
5. Replace the related harness.
FRONTAL COLLISION DETECTION[B1209] Driver and front passenger air bag modules are deployed. Refer to
SRS-48
.
SIDE COLLISION DETECTION
[B1210] Side or curtain air bag modules are deployed.
Diagnostic item
Explanation Repair order
Recheck SRS at each replacement
Revision: January 20102010 Versa