How to Troubleshoot an Airbag 1Turn on the interior lights in your vehicle. This can be a single technique to ensure that that the battery has a stored charge and is connected at its terminals. If no lights come on, open the car hood and jiggle the battery cables to check for a loose connection. Clean corroded terminals with carbonated soda plus a wire brush. Recharge the battery using a battery charger. The airbag has to be connected to the power supply in the vehicle to inflate.2Locate the airbag panel.
Look on the bottom side on the steering wheel to get a small panel that can be removed using a screwdriver. Behind the panel need to be an electrical tab that connects the vehicle's electrical harness for the airbag program. Disconnect the electrical tab connection and wait ten minutes to become sure the airbag will not inflate.3Turn the ignition key to the accessories position. Use the multimeter's probes to touch the electrical tab top from the vehicle's electrical harness auto diagnostic.
In the event the multimeter reads a compact voltage, then the electrical signal reaching your airbag continues to be great. If there is certainly no voltage reading, then you'll want to seek advice from an expert mechanic to troubleshoot your vehicle's electrical harness, which can turn into very complicated.4Use an OBD II (on-board diagnostics) scanner. Hook it as much as your vehicle's OBD II port to see if any in the vehicle's crash sensors have failed. The OBD II port is normally situated within two to 3 feet from the steering column behind a modest panel close to the driver's side door. Turn on the OBD II scanner and turn the vehicle's ignition key towards the accessories position. When the "Check engine" light is on, then you could have 1 or extra sensors failing (whether or not they are related to the airbag method or not) Auto code scanner. Replace any crash sensors that show up on the OBD II scan.
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