SRS-50
< ON-VEHICLE REPAIR >
COLLISION DIAGNOSIS
For Side and Ro llover Collision
INFOID:0000000005716112
FOR SIDE AND ROLLOVER COLLISION: Wh en SRS is activated in a collision
CAUTION:
Due to varying models and option levels, not all part s listed in the chart below apply to all vehicles.
WORK PROCEDURE
1. Before performing any of the following steps, ensure that all vehicle body and structural repairs have been
completed.
2. Replace the following components:
- Front seat back assembly (on the side on which side air bag is activated).
- Door finisher (on the side on which door-mounted curtain air bag is activated).
- Pop-up roll bar assemblies and pop-up roll bar covers.
- Side air bag (satellite) sensor LH/RH (on the side on which side air bag is activated).
- Diagnosis sensor unit.
- Seat belt pre-tensioner assemblies.
3. 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, etc.).
4. Perform self-diagnosis using CONSULT-III and “AIR BAG” warning lamp. Refer to SRS-19, "
SRS Opera-
tion Check" for details. Make sure entire SRS operates properly.
5. After the work is completed, perform self-diagnosis to check that no malfunction is detected. Refer to SRS-18, "
Self-Diagnosis Function (Without CONSULT-III)".
SRS INSPECTION (FOR SIDE AND ROLLOVER COLLISION)
Diagnosis sensor unit 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.
Steering wheel 1. Visually check steering wheel for deformities.
2. Check harness (built into steering wheel) and connectors for damage, and terminals for defor- mities.
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 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 classification system
(Passenger seat) 1. Remove passenger seat assembly.
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 connectors 1. 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 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 assembly.
3. If damaged—REPLACE the instrument panel assembly.
Part
Inspection
Revision: January 20102010 Versa
STC-28
< SYMPTOM DIAGNOSIS >[EPS]
UNBALANCE STEERING WHEEL TURNING FORCE AND RETURN BETWEEN
RIGHT AND LEFT
UNBALANCE STEERING WHEEL TU RNING FORCE AND RETURN BE-
TWEEN RIGHT AND LEFT
DescriptionINFOID:0000000005600201
Unbalance steering wheel turning force and return between right and left.
Diagnosis ProcedureINFOID:0000000005600202
1.CHECK THE ILLUMINATION OF THE EPS WARNING LAMP
Check that the EPS warning lamp turns ON when igni tion switch turns ON. Then, EPS warning lamp turns
OFF after the engine is started.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Refer to STC-26, "
Diagnosis Procedure".
2.CHECK WHEEL ALIGNMENT
1. Check the wheel alignment. Refer to FSU-7, "
On-Vehicle Inspection and Service".
2. Perform EPS control unit self-diagnosis.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Adjustment of wheel alignment.
3.CHECK EPS CONTROL UNIT SIGNAL
With CONSULT-III
1. Start the engine. CAUTION:
Stop the vehicle.
2. Turn steering wheel from full left stop to full right stop.
3. Select “TORQUE SENSOR” of “DATA MONITOR” for EPS control unit.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.CHECK EPS MOTOR
Perform the trouble diagnosis of EPS motor. Refer to STC-13, "
Diagnosis Procedure".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Repair or replace the specific malfunctioning part.
5.CHECK STEERING WHEEL TURNING FORCE
Check the steering wheel turning force. Refer to PS-6, "
On-Vehicle Inspection and Service".
Is the inspection result normal?
YES >> Inspection End.
NO >> Check the steering wheel turning force for mechanical malfunction. Refer to PS-6, "
On-Vehicle
Inspection and Service".
Monitor item ConditionDisplay value
TORQUE SENSOR Steering wheel: Not steer-
ing (There is no steering
force)
Approx. 0 Nm
Steering wheel: Right turn Positive value (Nm)
Steering wheel: Left turn Negative value (Nm)
Revision: January 20102010 Versa
PRECAUTIONSSTC-31
< PRECAUTION > [EPS]
C
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STC
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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 al l control units using CONSULT-III.
Service Notice or Precaution for EPS SystemINFOID:0000000005602354
CAUTION:
Check or confirm the following item wh en performing the trouble diagnosis.
• Check any possible causes by interviewing the symptom and it’s condition from the customer if any
malfunction, such as EPS warn ing lamp turns ON, occurs.
• Check if air pressure and size of tires are proper, the specified part is used for the steering wheel,
and control unit is genuine part.
• Check if the connection of steer ing column assembly and steering gear assembly is proper (there is
not looseness of mounting bolts, damage of rods, boots or sealants, and leakage of grease, etc).
• Check if the wheel alignment is adjusted properly.
• Check if there is any damage or modification to su spension or body resulting in increased weight or
altered ground clearance.
• Check if installation conditions of each link and suspension are proper.
• Check if the battery voltage is proper
• Check connection conditions of each connector are proper.
• Before connecting or disconnect ing the EPS control unit har-
ness connector, turn ignition switch “OFF” and disconnect
battery ground cable. Because battery voltage is applied to
EPS control unit even if igniti on switch is turned “OFF”.
• When connecting or disconnect ing pin connectors into or
from EPS control unit, take care not to damage pin terminals
(bend or break).
When connecting pin connectors, make sure that there are no
bends or breaks on EPS control unit pin terminal.
• Before replacing EPS control unit, perform EPS control unit input/output signal inspectio n and make sure whether EPS
control unit functions properly or not. Refer to STC-20, "
Ref-
erence Value".
SEF289H
SEF291H
SDIA1848E
Revision: January 20102010 Versa