- GT Style -

ETKA calls it "switch for longitudinal acceleration".

yodasfro

ABS inertia switch

js0ne

SRS inertia switch (edit: wrong answer)

- GT Style -

So is it for Airbag or ABS? What is it's fuction & what happens if not connected?

js0ne

it'll probably create an ABS fault and the ABS might not function.

js0ne

ELSA makes no mention of the above sensor.

UrS4boy

That PN shows on 927-00. If you go to 972-79, it is connected to the ABS harness.

UrS4boy

Under the ABS section:

"ABS - System Description : MY91-93

Longitudinal Accelerometer - It is unclear if all early ABS systems on the S2 have this component. More research is needed as I suspect it may have been deleted before the introduction of the OBD equipped ABS controller became standard equipment. The purpose of the accelerometer switch is to close an electrical contact in the event of sudden G-force increase in a forward direction - such as when braking heavily. Notated as F113 on the schematic.

ABS - System Description : MY94-95 Revisions

At some point in time, Audi decided that the risk of someone blaming them for causing an accident by allowing the driver to disable a safety feature such as ABS was too much of a risk to continue with. For the 1994 model year, a number of revisions were made to the ABS on the 80/90 series. The most significant change was the deletion of the ABS cancel switch. In relation to this change, there was no need for the combination relay. Finally the longitudional accelerometer switch was also deleted. "<ul><li><a href="http://www.s2central.net/main_frame.html">Click here and then on the ABS link.</a></li></ul>

- GT Style -

thanks