Impact Sensors
- Make
- Aston Martin
- Model
- DB9 Factory Workshop Manual
- Year
- Issue 2, 2005
- Section
- Restraining Devices › Impact Sensors
The primary purpose of the RCM is to discriminate between an event that warrants an airbag system deployment and an event that does not. The RCM governs the operation of the whole system and performs continual system diagnostics. Information on the severity of an impact is received from the impact sensors.
Variations in the deployment of the front airbag modules are dependent on the status of the front safety belt buckles.
Impact Sensors
Side Impact - Side impact sensors are mounted to the base of each B-pillar. In the event of a side impact, the RCM processes the impact data sent by the side impact sensor against stored data. The RCM will deploy both side impact airbags dependant on seat belt buckle status.
Front Impact
Front impact sensors (x2) are located under the grill opening panel.
The SRS module processes the impact data sent by the front impact sensor against stored data, and deploys the front airbags, and the seat belt pre-tensioners.
Specifications
| Torque Figures | ||
|---|---|---|
| Description | Nm | lb. / ft. |
| Drive Airbag | 8-10 | 6-7.5 |
| Passenger Airbag | 11.5 | 8.5 |
| Side Airbag | 10 | 7.5 |
Maintenance
Driver Airbag
| Repair Operation Time (ROT) | |
|---|---|
| Item | Code |
| Drivers Airbag Renew | 01.20.AB |
Removal
- Remove the earth ('-ve') terminal from the vehicle battery and ensure the ignition key is removed.
- Remove bolts (x2) that secure the driver airbag.
Rotate the steering wheel to gain access to the two bolts.
⚠ Warning ⚠
Allow a two minute power down period before proceeding. This will ensure that there is no power to the airbag system.
- Withdraw the driver airbag to gain access to the wiring harness plug. Disconnect the plug.
- Withdraw the driver airbag.
Installation
- Place the airbag module to the steering wheel. Connect the wiring harness plug.
- Install the bolts (x2). Torque to 8-10 Nm.
- Connect the vehicle battery with the ignition in the 'Off' position.
Passenger Airbag
| Repair Operation Time (ROT) | |
|---|---|
| Item | Code |
| Passenger Airbag Renew | 01.20.BB |
Removal
- Remove the earth ('-ve') terminal from the vehicle battery and ensure the ignition key is removed.
- Remove the glove box.
- Pull of the outer trim panel. Disconnect the glovebox release switch wiring harness plug.
- Release the damper cord.
- Remove screws (x3) from the glovebox door hinge. Remove door.
- Remove screws (x4) from the sight shield. Remove the sight shield and glovebox.
⚠ Warning ⚠
Allow a two minute power down period before proceeding. This will ensure that there is no power to the airbag system.
Parts & tools for this job For 2005 Aston Martin DB9
- TOOLOBD2 scannerSearch: OBD2 scanner
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