Chery Tiggo 5 (T21). Service manual — part 353

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SUPPLEMENTAL RESTRAINT SYSTEM

GENERAL INFORMATION

Description

This vehicle adopts the occupant restraint system, which includes active and supplemental types. Active
restraint system requires occupants to take some actions, such as fastening seat belt; while supplemental
restraint system requires no actions from occupants.
Active Restraint system:
 Driver seat belt and front passenger seat belt
 Rear seat belt
Supplemental Restraint System:
 Airbag system
 Driver seat belt pretensioner and front passenger seat belt pretensioner

Airbag system consists of the following components:

 Driver airbag

Driver airbag is installed in the steering wheel, which will inflate to protect the driver in the event of a
severe collision.

 Front passenger airbag

Front passenger airbag is installed in the upper right side of instrument panel, which will inflate to protect
the front passenger in the event of a severe collision.

 SRS control module assembly

SRS control module assembly has a built-in collision sensor which is installed on the body floor of auxiliary
fascia console body assembly. It controls the inflation of airbag so as to protect driver and front passenger
in the event of a severe collision.

 Spiral cable

It is used to connect the driver airbag while ensuring that steering wheel has enough steering angle.

 Airbag malfunction indicator

After ignition switch is turned to ON, if the malfunction indicator goes off after coming on for approximately
3 seconds, it means the supplemental restraint system operates normally. If the malfunction indicator does
not come on, remains on or flashes, it means the supplemental restraint system has a problem and it is
necessary to perform tests and repairs.

 Wire harness

Generally, it is yellow and used to connect the elements of supplemental restraint system. The connector
has a safety mechanism.

Airbag system function:
 Airbag must work together with the seat belt, and it is not a substitute for the seat belt. Driver and

passengers should always fasten their seat belts when driving, and adjust the belts to the proper position
according to their size.

 Minor collision will not activate the airbag system. The airbags will quickly inflate to protect the driver and

front passenger only when severe frontal collision occurs.

Seat belt pretensioner consists of the following components:
 Driver seat belt pretensioner

Driver seat belt pretensioner is located on the driver seat belt retractor, which will retract the driver seat belt
to protect the driver in the event of a severe collision.

 Front passenger seat belt pretensioner

Front passenger seat belt pretensioner is located on the front passenger seat belt retractor, which will
retract the front passenger seat belt to protect the front passenger in the event of a severe collision.

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Seat belt pretensioner function:
 At the moment of collision, the pretensioner retracts the seat belt before occupant moves forward, and

restraints occupant onto the seat, then locks the seat belt to prevent occupant from leaning forward, thus
protecting occupant safety.

 Seat belt pretensioner works with airbag. Once frontal collision impact is detected higher than specified

valve, the seat belt with pretensioner will work together with the airbag system to protect occupant safety.

Operation

Supplemental restraint system can improve the safety of occupants only when used in combination with the
seat belts. Occupants must fasten their seat belts in order to gain full protection from the supplemental
restraint system.
Supplemental restraint system circuit is continuously monitored and controlled by the SRS control module
assembly. The airbag indicator on instrument cluster illuminates for approximately 3 seconds for a test each
time ignition switch is turned ON. The airbag indicator goes off after the test is completed. If the indicator
comes on at any time other than the test time, it indicates that there is a problem in the supplemental restraint
system circuit.
Whether the airbag deploys or not depends on the angle and severity of the impact. When vehicle is
subjected to severe collision, the microprocessor in supplemental restraint system sends signals to the
corresponding inflator units of airbag to deploy the airbags quickly , thus protecting occupants.

CAUTION

 Before removing airbag system components, disconnect the negative battery cable at least 90 seconds.

Before servicing steering system, remove the driver airbag and spiral cable for safekeeping.

 If vehicle has been involved in a minor collision but the airbags do not deploy, always inspect the airbag

components.

 If airbag may be touched during servicing, remove the airbag as necessary for safekeeping before

servicing.

 Never use airbag components from another vehicle. When replacing the airbag components, replace

with new ones.

 If an airbag component is dropped or if there are any cracks, dents or other defects in the case, bracket

or connector, replace the airbag component with a new one.

 Information labels are attached to the periphery of airbag components. Always follow the cautions and

instructions on labels.

WARNING

 Never expose airbag components directly to hot air or open flames.
 Never attempt to disassemble or repair airbag components.
 The removed airbag should be kept properly. Never put other objects on it. If triggered accidentally, the

airbag may cause personal injury.

 As a disposable component, the airbag must be replaced after deployment and avoid reusing it.
 Always dispose of vehicle together with airbag, or the airbag may be triggered accidentally to cause

personal injury.

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Specifications

Torque Specifications

Description

Torque (N·m)

Coupling Bolt Between Front Passenger Airbag and
Instrument Panel Crossmember Assembly

10 ± 1

Coupling Nut Between SRS Control Module
Assembly and Body

10 ± 1

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Tools

Special Tool

General Tool

X-431 3G Diagnostic Tester

RCH0000001

ཽ⪔⊳䖜

Digital Multimeter

RCH0000002