Operation CHARM: Car repair manuals for everyone.

Advanced Air Bag

Repair And Inspection Required After Accident

CAUTION:
^ All air bag system components, including the electrical harness (component mounting points), must be inspected after an accident. If any components are damaged or bent, they must be replaced even if air bag system activation did not occur.
^ Never use air bag system parts from another vehicle.
^ Do not attempt to service the parts below. Service of these parts is by replacement only.
^ Driver / Passenger air bag (inflator) modules
^ Driver / Passenger side-air bag (inflator) modules
^ Driver / Passenger side curtain-air bag (inflator) modules
^ Driver / Passenger seat belt pretensioners
^ Driver / Passenger forward impact -sensors
^ Driver / Passenger side impact-sensors
^ SDM
^ Contact coil
^ Passenger seat cushion including OCM with sensor mat
^ Air bag wire harness in main harness, instrument panel harness, floor harness, passenger air bag harness and seat harness.
^ Driver seat position sensor Driver / Passenger seat belt buckle sensors

^ Proper operation of the sensors and air bag system requires that any repairs to the vehicle structure return it to its original production configuration.


CAUTION: After detecting one time of such collision as to meet deployment conditions, the SDM must not be used. Refer to Air Bag Diagnostic System Check:Advanced Air Bag when checking the SDM. Advanced Air Bag

Accident with Deployment / Activation Component Replacement
When driver and passenger air bags are deployed, the following components must be replaced.
^ Driver and passenger air bag (inflator) modules
^ Driver and passenger seat belt pretensioners
^ SDM - Driver / Passenger forward impact-sensors
^ Instrument panel - Driver seat position sensor
^ Passenger seat cushion including OCM with sensor mat

When side-air bag and side curtain-air bag are deployed, the following components must be replaced.
^ Deployed side-air bag (inflator) module
^ Deployed side curtain-air bag (inflator) module
^ Side impact-sensor - SDM - Driver seat position sensor
^ Passenger seat cushion including OCM with sensor mat

Accident with or without Deployment / Activation Component Inspections
Certain air bag and restraint system components must be inspected after any crash, whether the air bag system activated or not. If any faulty condition is found in the following checks, replace faulty part.
Those components are:
^ Steering column (1) and shaft joints
^ Check for length, damage and bend according to Checking Steering Column for Accident Damage

^ Steering column bracket (2) and capsules
^ Check for damage and bent.




^ Steering wheel and driver air bag (inflator) module
^ Check for damage or air bag (inflator) module fitness.
^ Check trim cover (pad surface) for cracks.
^ Check wire harness and connector for damage or tightness.




^ Contact coil
^ Check wire harness and connectors for damage or tightness.
^ Check contact coil case for damage.
^ Check contact coil circuit referring to Contact Coil Cable and Its Circuit Check:Advanced Air Bag.




^ Instrument panel member, reinforcement
^ Check for any distortion, bending, cracking or other damage.
^ Check instrument panel for cracks or deformities.

^ Passenger air bag (inflator) module
^ Check for dents, cracks, damage or fitness.
^ Check harness and connector for damage or tightness.




^ SDM
^ Check for external damage such as deformation, scratch, crack, peeled paint, etc.
^ Check SDM for a cause in itself preventing its proper installation. (There is a gap between SDM and SDM plate, or it cannot be fixed securely.)
^ Check connector or lead wire of SDM for scorching, melting or damage.
^ Check SDM connector and terminals for tightness.
^ Check if SDM sets a DTC and is judged as malfunctioning according to the diagnostic flow.




^ Air bag wire harness and connections
^ Check for damages, deformities or poor connections. Refer to Inspection of Intermittent and Poor Connections:Advanced Air Bag Advanced Air Bag
^ Check wire harness clamps for tightness.




^ Forward impact-sensor
^ Check sensor (1) and front panel (2) for damage, bend or rust.
^ Check connector (3) or lead wire (4) of forward impact-sensor for scorching, melting or damage.




^ Side impact-sensor
^ Check sensor (1) and under body (2) for dents, cracks, deformation or rust.
^ Check sensor connector (sensor side and harness side) (3) or sensor lead wire (4) for damage, crack, scorching or melting.




^ Seat belt pretensioner
^ Check for dents, cracks, damage or fitness
^ Check harness and connector for damage or tightness.




^ Seat belts and mounting points
^ Refer to Front Seat Belt Components.

^ "AIR BAG" warning light
^ After vehicle is completely repaired, perform Air Bag Diagnostic System Check:Advanced Air Bag. Advanced Air Bag

^ OCM with sensor mat (built in seat cushion)
^ Check for external damage such as deformation, scratch, crack, etc.
^ Check that the surface of the front passenger seat is free from hard bend or tear.
^ Check that the seat rail of the front passenger seat is free from bend or deformation.
^ Check connector or lead wire of OCM for scorching, melting or damage.
^ Check OCM connector and terminals for tightness.




^ Side-air bag (inflator) module
^ Check for dents, cracks, damage or fitness.
^ Check trim cover for cracks or deformities.
^ Check wire harness and connector for damage or tightness.

^ Side curtain-air bag (inflator) module
^ Check for dents, cracks, damage or fitness.
^ Check harness wire harness and connector for damage or tightness.
^ Check headlining for cracks or deformation.

^ Seat belt buckle sensor
^ Check sensor (1) and lock mechanism for damage, bend or rust.
^ Check connector or lead wire of seat position sensor for scorching, melting or damage.







^ Driver seat position sensor
^ Check sensor (1) and seat rail for damage, bend or rust.
^ Check connector or lead wire of seat position sensor for scorching, melting or damage