2007 NISSAN LATIO steering

SRS-42
DRIVER AIR BAG MODULE
Revision: June 20062007 Versa
3. Place the steering wheel in the straight ahead position.
4. Release the driver air bag module retaining clips RH/LH.

Insert suitable 4mm - 6mm blunt tool (A) through LH access
hole on back side of steering wheel (1) and contact retaining
clip.
CAUTION:
Do not use sharp edged objects such as screwdrivers to
release driver air bag module from steering wheel, SRS
components may be unintentionally damaged.

Press tool inward with sufficient force on retaining clip (1) to
release LH pawl of driver air bag module from steering wheel.

Repeat for RH pawl of driver air bag module from steering
wheel.

Tilt top edge away from steering wheel, then lift upward
releasing lower pawl of driver air bag module from steering
wheel.
5. Disconnect driver air bag module connectors (1) and horn con-
nector (2).

For removal/installation of the direct-connect SRS connec-
tors, refer to SRS-8, "
Direct-connect SRS Component Con-
nectors" .
INSTALLATION
Installation is in the reverse order of removal.

For removal/installation of the direct-connect SRS connectors, refer to SRS-8, "Direct-connect SRS Com-
ponent Connectors" .

If driver air bag module is being replaced due to deployment, spiral cable must also be replaced. Refer to
SRS-44, "
SPIRAL CABLE" .

After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS-21, "
SRS Operation Check" .
LHIA0109E
LHIA0110E
LHIA0111E
PHIA0953J

SRS-44
SPIRAL CABLE
Revision: June 20062007 Versa
SPIRAL CABLEPFP:25554
Removal and InstallationEHS001UE
REMOVAL
WAR NIN G:
When servicing the SRS, do not work from directly in front of air bag module.
CAUTION:

Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at
least 3 minutes.

Do not tap or bump the steering wheel.

Do not disassemble the spiral cable.

Do not allow oil, grease or water to come in contact with the spiral cable.

Replace the spiral cable if it has been dropped or sustained an impact.

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.
1. Disconnect the negative and positive battery cables, then wait at least 3 minutes.
2. Set the front wheels to the straight-ahead/neutral position.
3. Remove the steering wheel. Refer to PS-6, "
STEERING WHEEL" .
4. Remove the column cover upper and lower.
LHIA0113E
1. Nut, refer to PS-6, "STEERING
WHEEL"
2. Steering wheel 3. Lighting and turn signal switch
4. Spiral cable 5. Driver air bag module connectors 6. Wiper and washer switch
7. Column cover lower 8. Steering lock escutcheon 9. Steering column assembly
10. Column cover upper Pawl

SPIRAL CABLE
SRS-45
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SRS
Revision: June 20062007 Versa
5. Disconnect wiper and washer switch connector (1). Then while
pressing tabs (2), pull wiper and washer switch away from spiral
cable to remove.
6. Disconnect lighting and turn signal switch connector (1). Then
while pressing tabs (2), pull lighting and turn signal switch
toward driver door to remove.
7. Remove the screws, then release the tab at the top and pull the
spiral cable away from the steering column assembly.
8. Disconnect spiral cable connectors.
INSTALLATION
Installation is in the reverse order of removal.

Align spiral cable correctly when installing steering wheel, refer
to PS-6, "
STEERING WHEEL" . Make sure spiral cable align-
ment and centering marks (B) are matched and in the neutral
position. The neutral position is detected by turning left 2.6 revo-
lutions from the right end position, ending with the locating pin
(A) at the top. Place steering wheel in straight ahead position,
then install it with the locating pin hole (C) directly over spiral
cable locating pin.

After the work is completed, perform self-diagnosis to make sure
no malfunction is detected. Refer to SRS-21, "
SRS Operation
Check" .
WHIA0315E
WHIA0316E
PHIA1024J

SRS-46
FRONT PASSENGER AIR BAG MODULE
Revision: June 20062007 Versa
FRONT PASSENGER AIR BAG MODULEPFP:K8515
Removal and InstallationEHS001UF
REMOVAL
WAR NIN G:

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

Always place front passenger air bag module with pad side facing upward.
CAUTION:

Before servicing SRS, turn the ignition switch OFF, disconnect both battery cables and wait at
least 3 minutes.

Do not use old bolts after removal; replace with new bolts.

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 front passenger air bag module to temperatures exceeding 90°C (194°F).

Replace the front passenger 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
front passenger air bag module.
1. Disconnect the negative and positive battery cables, then wait at least 3 minutes.
2. Remove the side ventilator assembly (right). Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
3. Disconnect front passenger air bag module connector (1) and
remove the upper instrument panel assembly bolts (2).
⇐: Vehicle front
4. Remove the front passenger air bag module bolts (3) from the
steering member.
5. Release the pawls and remove the front passenger air bag mod-
ule (1) from the upper instrument panel assembly (2).
INSALLATION
Installation is in the reverse order of removal.

After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to
SRS-21, "
SRS Operation Check" .
WHIA0321E
WHIA0317E
WHIA0318E

SRS-54
COLLISION DIAGNOSIS
Revision: June 20062007 Versa
COLLISION DIAGNOSISPFP:00015
For Frontal CollisionEHS001VB
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-21, "
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 damage,
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 fasten-
ers.
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-
II 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, terminals
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-ten-
sioner 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
assemblies with new
fasteners.
*: Confirm seat belt
pre-tensioner activa-
tion using CONSULT-
II 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
components 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.

COLLISION DIAGNOSIS
SRS-55
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SRS
Revision: June 20062007 Versa
For Side and Rollover CollisionEHS001VC
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-21, "
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-21, "
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-21, "
SRS Opera-
tion Check" for details. Ensure entire SRS operates properly.
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
bag has deployed:
REPLACE the spiral
cable.If the driver front air bag has not deployed:
1. Visually check spiral cable and combination switch for damage.
2. Check connectors and protective tape for damage.
3. Check steering wheel for noise, binding or heavy operation.
4. If no damage is found, reinstall.
5. If damaged—REPLACE.
Occupant classifica-
tion system (Passen-
ger seat)1. Remove passenger seat.
2. Check control unit case for dents, cracks of deformities.
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-
tors1. Check connectors for poor connection, damage, and terminals for deformities.
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
air bag has deployed:
REPLACE the instru-
ment panel assembly.If the passenger front air bag has NOT deployed:
1. Visually check instrument panel for damage.
2. If no damage is found, reinstall the instrument panel.
3. If damaged—REPLACE the instrument panel. Part SRS is activated SRS is NOT activated

STC-1
STEERING CONTROL SYSTEM
G STEERING
CONTENTS
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SECTION STC
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STC
Revision: June 20062007 Versa
EPS
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions Necessary for Steering Wheel Rotation
After Battery Disconnect .......................................... 3
OPERATION PROCEDURE ................................. 3
Service Notice or Precautions for EPS System ....... 4
EPS SYSTEM ............................................................. 5
System Description .................................................. 5
EPS CONTROL UNIT ........................................... 5
EPS MOTOR ......................................................... 5
TORQUE SENSOR ............................................... 5
REDUCTION GEAR .............................................. 5
EPS WARNING LAMP .......................................... 5
System Diagram ....................................................... 6
COMPONENTS FUNCTION DESCRIPTION ....... 6
CAN Communication ................................................ 6
SYSTEM DESCRIPTION ...................................... 6
TROUBLE DIAGNOSIS .............................................. 7
Fail-Safe Function .................................................... 7
How to Perform Trouble Diagnosis .......................... 7
BASIC CONCEPT ................................................. 7
PRECAUTIONS FOR TROUBLE DIAGNOSIS ..... 7
INTERVIEW .......................................................... 7
Component Parts Location ....................................... 8
Wiring Diagram — EPS — ....................................... 9
EPS Control Unit Input/Output Signal Reference
Values .....................................................................11
SPECIFICATIONS WITH CONSULT-II ................11
SPECIFICATIONS BETWEEN EPS CONTROL
UNIT TERMINALS .............................................. 12
CONSULT-II Function (EPS) .................................. 13
FUNCTION .......................................................... 13
CONSULT-II SETTING PROCEDURE ................ 13
SELF-DIAG RESULTS MODE ............................ 13
DATA MONITOR ................................................. 14
EPS CONTROL UNIT PART NUMBER .............. 14
Symptom Chart ...................................................... 15TROUBLE DIAGNOSIS FOR SYSTEM .................... 16
DTC C1601 BATTERY VOLT ................................. 16
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 16
EPS CONTROL UNIT TERMINALS AND REF-
ERENCE VALUE ................................................. 16
DIAGNOSTIC PROCEDURE .............................. 17
DTC C1604 TORQUE SENSOR ............................ 19
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 19
EPS CONTROL UNIT TERMINALS AND REF-
ERENCE VALUE ................................................. 19
DIAGNOSTIC PROCEDURE .............................. 19
DTC C1606 EPS MOTOR ...................................... 21
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 21
EPS CONTROL UNIT TERMINALS AND REF-
ERENCE VALUE ................................................. 21
DIAGNOSTIC PROCEDURE .............................. 21
DTC C1607 EEPROM ............................................ 22
DIAGNOSTIC PROCEDURE .............................. 22
DTC C1608 CONTROL UNIT ................................. 22
DIAGNOSTIC PROCEDURE .............................. 22
DTC C1609 CAN VHCL SPEED ............................ 23
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 23
DIAGNOSTIC PROCEDURE .............................. 23
DTC C1610 CAN ENG RPM .................................. 24
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 24
DIAGNOSTIC PROCEDURE .............................. 24
DTC U1000 CAN COMM CIRCUIT ........................ 24
DIAGNOSTIC PROCEDURE .............................. 24
Component Inspection ............................................ 25
EPS MOTOR ....................................................... 25
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 26
EPS Warning Lamp Does Not Turn ON ................. 26
SYMPTOM: ......................................................... 26
DIAGNOSTIC PROCEDURE .............................. 26
EPS Warning Lamp Does Not Turn OFF ................ 27

STC-2Revision: June 20062007 Versa SYMPTOM: .......................................................... 27
DIAGNOSTIC PROCEDURE .............................. 27
Steering Wheel Turning Force is Heavy or Light .... 29
SYMPTOM: .......................................................... 29
DIAGNOSTIC PROCEDURE .............................. 29
Unbalance Steering Wheel Turning Force and
Return Between Right and Left .............................. 31SYMPTOM: ..........................................................31
DIAGNOSTIC PROCEDURE ...............................31
Unbalance Steering Wheel Turning Force (Torque
Variation) .................................................................32
SYMPTOM: ..........................................................32
DIAGNOSTIC PROCEDURE ...............................32