[DML] Re: Inline diode to ECU bad????
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[DML] Re: Inline diode to ECU bad????



Most of your ohm meters have a range marked with diode symbol.  Mine 
is the 2 Kohm range.  When you test a diode with this range you read 
the forward voltage drop of the diode.  Typically 0.6 to 0.7 volts.  
Reverse the leads and you should read an open circuit.  Red to anode 
side and black to the cathode is the forward conducting state.



--- In dmcnews@xxxxxxxxxxxxxxx, "sweetp01569" <paul.sweet@...> wrote:
>
> I just used the #13 How-to guide from MYDELOREAN.NET, for testing 
the 
> idle speed switch. I tested the switch itself, and it's fine. I 
also 
> have continuity through the black/green wire from the switch to the 
> inline diode. Also, from the "upstream" side of the diode, I get 0 
> ohms between that and the chassis ground with the gas pedal at 
rest, 
> and about 27 ohms once I press the pedal (open the switch) However, 
I 
> do not get the <few hundred ohms on the other side of the diode, 
which 
> is pin 8 of the cable, per the guide. I get totally open with the 
gas 
> pedal at rest (switch closed) and when pressed (between pin 8 and 
> chassis). Is the diode bad? How can I test the diode itself? Can I 
get 
> locally at an autoparts store, or do I need to order from a D 
vendor?
> 
> Thanks,
> 
> Paul
>



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