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I got it start up again and drove it around the block to recharge the battery since I haven't driven it and I didn't want to drain the battery in the process.

Did it run ok after you started it or are there still signs of problems?

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So as I was trying to maintain a steady grip on the prongs to grab the codes--its tricky holding the proper position/stance--with the analog voltmeter but I abruptly realized I didn't know the settings to properly read them so I tried to do a quick search (to no avail) and just decided on 9V as that got the best reading on a AA battery...

You're looking for 12v so you may want to go to a higher multimeter setting.
[/quote]so when I went back to grab the codes the same issue occurred: the check engine light won't turn on.

It won't go into self-check and the voltmeter is no longer picking up any activity.

Edit: Ok a few hours later and the Check Engine Light still won't appear, and I unplugged the battery with no luck either. And as expected no activity monitored from the diagnostic pins.[/quote]
When you say the same thing happen, do you mean it won't start/run? If so, then definitely pull your ECU and check for burnt components or leaking capacitor (cylindrical components). The leaking fluid is an acid that will eat your ecu board destroying it.
Also check if your idle speed controller is within spec since a bad one can destroy your ecu.

Off Roader
98 Montero with the Winter Package
89 Montero minty clean and reserved for overlanding trips or Cars and Coffee events
96SR (3.15:1 xcase, 35's) gone to the rust gods
96SR Build Up Thread
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