Re: [DML] Testing Lambda thermal switch
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Re: [DML] Testing Lambda thermal switch

Thanks, Tom, and also, John, for doing some tests.  John, I suspect 
you were testing the switch above 59 degrees.  Tom, it looks like I 
show an open circuit at 59 deg, testing between pin #7 in the 
connector and ground, so not sure if the switch is bad, or perhaps I 
have an open wire.  Is there another location where I can test this 

When I get a cold morning below 59 degrees, I'll start the car.  
What symptoms would appear if this switch was bad?  Obviously, it 
looks like I don't need to worry about it for the summer.



--- In dmcnews@xxxxxxxxxxxxxxx, "Tom Niemczewski" <dmctom@...> wrote:
> Guys,
> Let me help you out with testing of this switch.
> It is a switch, so you will only see two states - shorted (about 0 
ohms) or 
> open (infinite). There should be no resistance in this circuit... 
> maybe 1 or 2 ohms for the wiring. If you see more then it's time 
to clean 
> the connections.
> According to the shop manual (page D:04:10 and D:04:11) the switch 
> activate when the temperature is BELOW 15 degrees C or 59 degrees 
F. This 
> means that below this temperature it should be shorted (single 
ohms, beep on 
> continuity test) and above this temperature it should read open 
> I hope this helps
> Tom Niemczewski
> vin 6149 (in Poland!)
> Google earth: 52°25'17.30"N 21° 1'58.00"E
> dmctom@...
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