
SRS-42
< ON-VEHICLE REPAIR >
SIDE AIR BAG (SATELLITE) SENSOR
SIDE AIR BAG (SATELLITE) SENSOR
Removal and InstallationINFOID:0000000001703932
REMOVAL
WARNING:
Do not reuse center pillar upper garnish if removed.
CAUTION:
• Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least
3 minutes.
• Do not disassemble the side air bag (satellite) sensor.
• Do not use old nuts after removal; replace with new nuts.
• Replace the side air bag (satellite) sensor if it has been
dropped or sustained an impact.
• Check side air bag (satellite) sensor to make sure it is free of
deformities, dents, cracks or rust. If it shows any visible signs
of damage, replace it with a new one.
1. Disconnect both the negative and positive battery cables, then wait at least 3 minutes.
2. Remove the front seat belt retractor. Refer to SB-3, "
Removal and Installation of Front Seat Belt".
3. Remove the nuts (1) and remove side air bag (satellite) sensor
(2).
⇐: Vehicle front
4. Disconnect the side air bag (satellite) sensor harness connector
(3).
INSTALLATION
Installation is in the reverse order of removal.
• After the work is completed, perform self-diagnosis to make sure no malfunction is detected. Refer to SRS-
18, "SRS Operation Check".
WHIA0321E
WHIA0322E 

FRONT SEAT BELT PRE-TENSIONER
SRS-43
< ON-VEHICLE REPAIR >
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FRONT SEAT BELT PRE-TENSIONER
Removal and InstallationINFOID:0000000001703933
For removal and installation procedures, refer to SB-3, "Removal and Installation of Front Seat Belt". 

SRS-44
< ON-VEHICLE REPAIR >
DIAGNOSIS SENSOR UNIT
DIAGNOSIS SENSOR UNIT
Removal and InstallationINFOID:0000000001703934
REMOVAL
WARNING:
Before disconnecting diagnosis sensor unit harness connector(s), be sure to disconnect harness con-
nectors from air bag modules and front seat belt pre-tensioner to prevent deployment by static elec-
tricity.
CAUTION:
• Before servicing the SRS, turn the ignition switch OFF, disconnect both battery cables and wait at
least 3 minutes.
• Do not disassemble diagnosis sensor unit.
• Do not use old bolts; replace with new bolts.
• Replace the diagnosis sensor unit if it has been dropped or sustained an impact.
• Check diagnosis sensor unit bracket to make sure it is free of deformities, dents, cracks or rust. If it
shows any visible signs of damage, replace with new one. 
• The diagnosis sensor unit must always be installed with the arrow mark "⇐" pointing toward the
front of the vehicle for proper operation.
1. Disconnect the negative and positive battery cables, then wait at least 3 minutes.
2. Disconnect the harness connectors for each air bag module and seat belt pre-tensioner. Refer to SRS-33
,
SRS-38
, SRS-39, SRS-43.
3. Remove center console assembly. Refer to IP-10
.
4. Disconnect diagnosis sensor unit connectors.
5. Remove the bolts and the ground bolt, then remove the diagnosis sensor unit.
INSTALLATION
Installation is in the reverse order of removal.
• The diagnosis sensor unit must always be installed with the arrow mark "⇐" pointing toward the front of the
vehicle.
• Follow the tightening sequence 1,2,3,4 as shown.
• After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to SRS-
18, "SRS Operation Check".
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-16, "
CONSULT-III Function (AIR BAG)".
1. Diagnosis sensor unit connectors 2. Ground Bolt 3. Bolt
4. Diagnosis sensor unit⇐Vehicle front
WHIA0323E 

SRS-46
< ON-VEHICLE REPAIR >
COLLISION DIAGNOSIS
COLLISION DIAGNOSIS
For Frontal CollisionINFOID:0000000001703936
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-
18, "SRS Operation Check".
SRS INSPECTION (FOR FRONTAL COLLISION)
Part SRS is activated SRS is NOT activated
Driver air bag module If the driver air bag 
has deployed:
REPLACE
Install with new fas-
teners.If the driver air bag has NOT been activated:
1. Remove driver air bag module. Check harness cover and connectors for dam-
age, terminals for deformities, and harness for binding.
2. Install driver air bag module into the steering wheel to check fit and alignment 
with the wheel.
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 
bag moduleIf the front passenger 
air bag has deployed:
REPLACE
Install with new fas-
teners.If the front passenger air bag has NOT been activated:
1. Remove front passenger air bag module. Check harness cover and connectors 
for damage, terminals for deformities, and harness for binding.
2. Install front passenger air bag module into the instrument panel to check fit with 
the instrument panel.
3. If no damage is found, reinstall with new fasteners.
4. If damaged—REPLACE. Install front passenger air bag modules with new fas-
teners.
Crash zone sensor If any of the front air 
bags or seat belt pre-
tensioners* have 
been activated:
REPLACE the crash 
zone sensor and 
bracket with new fas-
teners.
*: Confirm seat belt 
pre-tensioner activa-
tion using CONSULT-
III only.If the front air bags or seat belt pre-tensioners have NOT been activated:
1. Remove the crash zone sensor. Check harness connectors for damage, termi-
nals for deformities, and harness for binding.
2. Check for visible signs of damage (dents, cracks, deformation) of the crash zone 
sensor and bracket.
3. Install the crash zone sensor to check fit.
4. If no damage is found, reinstall with new fasteners.
5. If damaged—REPLACE the crash zone sensor and bracket with new fasteners. 
Seat belt pre-tension-
er assemblies
(All applicable loca-
tions: buckle, reel, lap 
outer)If either the driver or 
passenger seat belt 
pre-tensioner* has 
been activated:
REPLACE all seat 
belt pre-tensioner as-
semblies with new 
fasteners.
*: Confirm seat belt 
pre-tensioner activa-
tion using CONSULT-
III only.If the pre-tensioners have NOT been activated:
1. Remove seat belt pre-tensioners.
Check harness cover and connectors for damage, terminals for deformities, and 
harness for binding.
2. Check belts for damage and anchors for loose mounting.
3. Check retractor for smooth operation.
4. Check seat belt adjuster for damage.
5. Check for deformities of the center pillar inner.
6. If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner 
assembly.
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 com-
ponents have been 
activated:
REPLACE the diag-
nosis sensor unit.
Install with new fas-
teners.If none of the SRS components have been activated:
1. Check case for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall with new fasteners.
4. If damaged—REPLACE. Install diagnosis sensor unit with new fasteners. 

SRS-48
< ON-VEHICLE REPAIR >
COLLISION DIAGNOSIS
Part SRS is activated SRS is NOT activated
LH side curtain air 
bag moduleIf the LH side curtain 
air bag has deployed:
REPLACE the LH 
side curtain air bag 
module. (Repair the 
center pillar inner, etc. 
before installing new 
one if damaged.)If the LH side curtain air bag has NOT deployed:
1. Check for visible signs of damage (dents, tears, deformation) of the center pillar 
on the collision side.
2. If damaged—Remove the LH side curtain air bag module.
3. Check for visible signs of damaged (tears etc.) of the LH side curtain air bag mod-
ule.
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 fas-
teners.
6. If damaged—REPLACE the LH side curtain air bag module with new fasteners. 
RH side curtain air 
bag moduleIf the RH side curtain 
air bag has deployed:
REPLACE the RH 
side curtain air bag 
module. (Repair the 
center pillar inner, etc. 
before installing new 
one if damaged.)If the RH side curtain air bag has NOT deployed:
1. Check for visible signs of damage (dents, tears, deformation) of the center pillar 
on the collision side.
2. If damaged—Remove the RH side curtain air bag module.
3. Check for visible signs of damaged (tears etc.) of the RH side curtain air bag 
module.
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 fas-
teners.
6. If damaged—REPLACE the RH side curtain air bag module with new fasteners. 
Front LH side air bag 
moduleIf the front LH side air 
bag has deployed: 
REPLACE front LH 
seatback assembly.If the front LH side air bag has NOT deployed: 
1. Check for visible signs of damage (dents, tears, deformation) of the seat back on 
the collision side.
2. Check harness and connectors for damage, and terminals for deformities.
3. If damaged—REPLACE the front LH seatback assembly. 
Front RH side air bag 
moduleIf the front RH side air 
bag has deployed:
REPLACE front RH 
seatback assembly.If the front RH side air bag has NOT deployed:
1. Check for visible signs of damage (dents, tears, deformation) of the seat back on 
the collision side.
2. Check harness and connectors for damage, and terminals for deformities.
3. If damaged—REPLACE the front RH seatback assembly. 
(LH or RH) side air 
bag (satellite) sensor If any of the SRS 
components have de-
ployed:
REPLACE the side air 
bag (satellite) sensor 
on the collision side 
with new fasteners. 
(Repair the center pil-
lar inner, etc. before 
installing new one if 
damaged.)If none of the SRS components have been activated:
1. Remove the side air bag (satellite) sensor on the collision side. Check harness 
connectors for damage, terminals for deformities, and harness for binding.
2. Check for visible signs of damage (dents, cracks, deformation) of the side air bag 
(satellite) sensor.
3. Install the side air bag (satellite) sensor to check fit.
4. If no damage is found, reinstall the side sir bag (satellite) sensor with new fasten-
ers.
5. If damaged—REPLACE the side air bag (satellite) sensor with new fasteners.
Diagnosis sensor unit If any of the SRS 
components have de-
ployed:
REPLACE the diag-
nosis sensor unit with 
new fasteners.If none of the SRS components have been activated:
1. Check case and bracket for dents, cracks or deformities.
2. Check connectors for damage, and terminals for deformities.
3. If no damage is found, reinstall the diagnosis sensor unit with new fasteners.
4. If damaged—REPLACE the diagnosis sensor unit with new fasteners.
Seat belt pre-tension-
er assemblies
(All applicable loca-
tions: buckle, reel, lap 
outer)If either the driver or 
passenger seat belt 
pre-tensioner* has 
been activated:
REPLACE all seat 
belt pre-tensioner as-
semblies with new 
fasteners.
*: Confirm seat belt 
pre-tensioner activa-
tion using CONSULT-
III only.If the pre-tensioners have NOT been activated:
1. Remove seat belt pre-tensioners.
Check harness cover and connectors for damage, terminals for deformities, and 
harness for binding.
2. Check belts for damage and anchors for loose mounting.
3. Check retractor for smooth operation.
4. Check seat belt adjuster for damage.
5. Check for deformities of the center pillar inner.
6. If the center pillar inner has no damage, REPLACE the seat belt pre-tensioner 
assembly.
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.  

STC-1
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SECTION STC
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STC
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CONTENTS
STEERING CONTROL SYSTEM
EPS
SERVICE INFORMATION  ............................
2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
2
Service Notice or Precaution for EPS System  ..........2
EPS SYSTEM  ......................................................4
System Description  ...................................................4
Schematic .................................................................5
CAN Communication .................................................5
TROUBLE DIAGNOSIS  ......................................6
Fail-Safe Function  .....................................................6
How to Perform Trouble Diagnosis  ...........................6
Component Parts Location ........................................7
Wiring Diagram - EPS -  .............................................8
EPS Control Unit Input/Output Signal Reference 
Value .........................................................................
9
EPS Terminal and Reference Value ........................10
CONSULT-III Function (EPS) ..................................11
Symptom Chart ........................................................13
TROUBLE DIAGNOSIS FOR SYSTEM  ............14
DTC C1601 BATTERY VOLT ..................................14
DTC C1604 TORQUE SENSOR  .............................15
DTC C1606 EPS MOTOR  .......................................16
DTC C1607 EEPROM  .............................................17
DTC C1608 CONTROL UNIT ..................................17
DTC C1609 CAN VHCL SPEED .............................18
DTC C1610 CAN ENG RPM  ...................................19
DTC U1000 CAN COMM CIRCUIT  .........................19
Component Inspection .............................................19
TROUBLE DIAGNOSIS FOR SYMPTOMS  ......21
EPS Warning Lamp Does Not Turn ON  ..................21
EPS Warning Lamp Does Not Turn OFF  ................21
Steering Wheel Turning Force Is Heavy or Light .....22
Unbalance Steering Wheel Turning Force and Re-
turn Between Right and Left  ....................................
23
Unbalance Steering Wheel Turning Force (Torque 
Variation) .................................................................
24 
![NISSAN TIIDA 2008  Service Repair Manual STC-2
< SERVICE INFORMATION >[EPS]
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"
INFOID:000000 NISSAN TIIDA 2008  Service Repair Manual STC-2
< SERVICE INFORMATION >[EPS]
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"
INFOID:000000](/manual-img/5/57399/w960_57399-2684.png)
STC-2
< SERVICE INFORMATION >[EPS]
PRECAUTIONS
SERVICE INFORMATION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT 
PRE-TENSIONER"
INFOID:0000000001703869
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or 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 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:
• 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 performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see the SRS section.
• 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 har-
ness connectors.
Precaution Necessary for Steering Wheel Rotation After Battery Disconnect
INFOID:0000000001703870
NOTE:
• This Procedure is applied only to models with Intelligent Key system and NVIS/IVIS (NISSAN/INFINITI
VEHICLE IMMOBILIZER SYSTEM - NATS).
• Remove and install all control units after disconnecting both battery cables with the ignition knob in the
″LOCK″ position.
• Always use CONSULT-III to perform self-diagnosis as a part of each function inspection after finishing work.
If DTC is detected, perform trouble diagnosis according to self-diagnostic results.
For models equipped with the Intelligent Key system and NVIS/IVIS, an electrically controlled steering lock
mechanism is adopted on the key cylinder.
For this reason, if the battery is disconnected or if the battery is discharged, the steering wheel will lock and
steering wheel rotation will become impossible.
If steering wheel rotation is required when battery power is interrupted, follow the procedure below before
starting the repair operation.
OPERATION PROCEDURE
1. Connect both battery cables.
NOTE:
Supply power using jumper cables if battery is discharged.
2. Use the Intelligent Key or mechanical key to turn the ignition switch to the ″ACC″ position. At this time, the
steering lock will be released.
3. Disconnect both battery cables. The steering lock will remain released and the steering wheel can be
rotated.
4. Perform the necessary repair operation.
5. When the repair work is completed, return the ignition switch to the ″LOCK″ position before connecting
the battery cables. (At this time, the steering lock mechanism will engage.)
6. Perform a self-diagnosis check of all control units using CONSULT-III. 
Service Notice or Precaution for EPS SystemINFOID:0000000001703871
CAUTION:
Check or confirm the following item when performing the trouble diagnosis. 

WT-1
SUSPENSION
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SECTION WT
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WT
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PCONTENTS
ROAD WHEELS & TIRES
SERVICE INFORMATION  ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System 
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
PREPARATION ...................................................3
Special Service Tool  .................................................3
Commercial Service Tool  ..........................................3
NOISE, VIBRATION AND HARSHNESS 
(NVH) TROUBLESHOOTING  .............................
4
NVH Troubleshooting Chart  ......................................4
ROAD WHEEL  ....................................................5
Inspection ..................................................................5
ROAD WHEEL TIRE ASSEMBLY  ......................6
Balancing Wheels  .....................................................6
Rotation .....................................................................6
TIRE PRESSURE MONITORING SYSTEM  ........7
System Component ...................................................7
System Description  ...................................................7
CAN COMMUNICATION  .....................................9
System Description  ...................................................9
TROUBLE DIAGNOSES  ....................................10
Wiring Diagram- T/WARN -  .....................................10
Terminal and Reference Value for BCM  .................10
ID Registration Procedure  .......................................11
Transmitter Wake Up Operation  .............................12
CONSULT-III Function (BCM)  .................................12
How to Perform Trouble Diagnosis for Quick and 
Accurate Repair  .......................................................
13
Preliminary Check  ...................................................14
Self-Diagnosis .........................................................15
Flash Code/Symptom Chart  ....................................16
TROUBLE DIAGNOSIS FOR SELF-DIAG-
NOSTIC ITEMS  .................................................
18
Data from Transmitter Not Being Received  .............18
Transmitter Malfunction  ...........................................18
Transmitter Pressure Malfunction ............................19
Vehicle Speed Signal  ..............................................19
TROUBLE DIAGNOSIS FOR SYMPTOMS  ......20
Low Tire Pressure Warning Lamp Does Not Come 
On When Ignition Switch Is Turned On  ...................
20
Low Tire Pressure Warning Lamp Stays On When 
Ignition Switch Is Turned On  ...................................
20
Low Tire Pressure Warning Lamp Flashes When 
Ignition Switch Is Turned On  ...................................
21
Hazard Warning Lamps Flash When Ignition 
Switch Is Turned On  ................................................
22
ID Registration Cannot Be Completed  ....................22
REMOVAL AND INSTALLATION .....................23
Transmitter (Pressure Sensor)  ................................23
SERVICE DATA AND SPECIFICATIONS 
(SDS) .................................................................
25
Road Wheel  .............................................................25
Tire ..........................................................................25