Yes, if the car is fitted with an on board diagnostic plug, the service
manual could be useful to check some signals coming from this OBD plug, with
a simple multimeter. (it gives pulses, which you can read as flips from the
dial on the meter).
Does the repair manual give this info?

Frank

"ME" > schreef in bericht
...
>I have a repair manual for this vehicle. It sux..
> Is there any way to test my ecm before buying a new one?
>
> > wrote in message
> ups.com...
>> Painless wrote:
>>
>>> Or buy a scrap Suzi (with the emc in it) for more spare parts and a
>>> Hayes
>>> manual.
>>
>> The Haynes manuals for these series (sidekick/tracker/samurai) is ****
>> & only gives you the dumb stuff you already know or can figure out with
>> common sense. Pay the bux & get the factory manual if you're really
>> going to work on it. Esp the electricals.
>>
>
>