|
|
|
|
| Author |
|
|
Registered
Join Date: Dec 2009
Posts: 306
|
Airbag clock spring question
I've posted a picture of the of the airbag clock spring on my late model (964). Can these units be bench tested or checkef with an ohmmeter.
Not sure if the internal copper winding band is broken. Thanks all. L 
Last edited by LCOX; 12-19-2020 at 03:38 PM.. Reason: Adding picture |
||
12-19-2020, 03:33 PM
|
|
|
Registered
|
Not sure if i would touch that with a meter, perhaps with face mask and headgear and leather shirt. Nahh
|
||
|
12-19-2020, 09:11 PM
|
|
|
Grumpy old hasbeen
|
its just the clock spring, not the airbag, mate!
I have not looked into the circuit digrams but one would expect yes, it should be testable. the sensors that set of the airbags are in/on the corners of cars. This just MY opinion based on my general knowledge.
__________________
Perth, Western Australia '74 911 Targa |
||
|
12-19-2020, 09:15 PM
|
|
|
Registered
Join Date: Mar 2019
Posts: 1,640
|
Yes but...
Since the airbag is disconnected, no chance of anything going off. But look at the connectors, there's likely a "shorting bar" that you'll need to get out of the way. It's so that people can't hook up 12v (or an ancient analog meter) across the terminals and blow the bag with it still installed in the car. You can CAREFULLY rotate the clockspring left and right and feel where it's running out of wire. Set it in the middle after verifying that the car's front wheels are centered before installing the clockspring back onto the steering column. |
||
|
12-20-2020, 03:15 AM
|
|
|
Registered
Join Date: Dec 2009
Posts: 306
|
Dannobee. That appears to be the problem. When I rotate the clockspring it continues to rotate indefinitely without coming to a stop . It never feels like its running out of wire. It does however make a clicking noise when its turned a full revolution. I think the internal copper wire is broken.
|
||
|
12-20-2020, 09:23 AM
|
|
|
Registered
Join Date: Dec 2009
Posts: 306
|
Anyone with a idea?
|
||
|
12-21-2020, 08:18 AM
|
|
|
|
Registered
Join Date: Mar 2019
Posts: 1,640
|
You can ohm check them just like anything else, but remember that one side has a shorting bar on it. Actually, if you check the resistance of the two terminals where the air bag plugs in, it should complete the circuit with the shorting bar in place and functioning, so just check resistance there. If you get an open reading, one or both wires are open.
It shouldn't just freely spin. If it does, the little ribbon of wire is broken. The range of authority is something like 6 turns from one lock to the other. |
||
|
12-21-2020, 08:31 AM
|
|
