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curryinahurry

E36 Speed Signal for Wiper

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Hi guys,

I've got a problem with my E36 windscreen wipers stuck on "stopped car" mode. So this means that my wipers always have a very long delay except for when its set to lighting speed.

I've tried swapping the wiper module with one which I know works properly, but it didn't help.

I'm now thinking maybe its missing the vehicle speed signal. Would anyone have any ideas?

Thanks!

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Found this don't know if it is of any help.

In general, the right rear wheel speed sensor sends a pulse train or tone to the cluster (Brn/Red wire of connector C). I found that this signal also contained some noise that introduced extra pulses that disrupted an external pulse-counting circuit. The problem was solved by adding a 0.1 uFd capacitor from the Brn/red wire to ground.

There is another Vehicle Speed Sensor (VSS) signal that comes out of the cluster (Blk/White of Connector B) and goes to the amplifier, cruise control, wipers, radio, and on-board computer. I don't know anything about that signal, but I suspect it is a tone as well.

Edited by M-Spec

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