Re: "Lambda counter" (service interval counter) on speedo cable

["ksgrimsr <knut.s.grimsrud@xxxx>" <knut.s.grimsrud@xxxx>]

The sole purpose of the lambda counter is to light the idiot light on 
the dash every 30,000 miles to remind the owner to have the car 
serviced to replace the lambda sensor (and other 30,000 mile service 
like tune-up ,etc). It only changes state every 30,000 miles and 
needs a manual reset to arm it again after it has tripped. It is not 
directly useful in determining vehicle velocity as you would need for 
a cruise control pulse generator.

Knut


--- In dmcnews@xxxxxxxxxxxxxxx, "content22207 <brobertson@xxxx>" 
<brobertson@xxxx> wrote:
> I thought gizo on speedo cable was a pulse generator (has 12v in 
just
> like a transducer). Called it "Lambda counter" in earlier post 
because
> I seem to remember once seeing it ID'd as such somewhere. Wiring
> diagram calls "service interval counter." Now that I study diagram,
> can't figure out what the thing's function is. If diagram correct,
> other end is an idiot light. Does speedo cable trigger a reed switch
> or something similar inside (if so, couldn't it function as a pulse
> generator)?