Using Voltmeter to Get Trouble Codes?

Question

Does anyone know what setting you should put your voltmeter on ? Is it on OHM, ACV, or DCV ? Also, what numbers: 500, 250, or 10? The repair manual is unclear? Furthermore, my number 2 pin does not correspond with the one in the manual or on the web site:

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So, is there a way todetermine the real number 2 and number 4 pins ? ( I have a 1990 FordTaurus, 3.8 L V6 automatic). The number 2 pin is marked, but it is not thesame one on the diagram of the manual or of the web site. Thanks,

Nino

Scott M · Accepted Answer

Put it on DCV 10 or 100.  Are you looking at the plug from the front?

Scott M · Answer

Also, are you looking at the right plug under the hood?

Bill · Answer

The volt meter works OK.  You need to count the needle swings.  However,I've found counting the check engine light blinks works just as well and isless of a hassle then hooking up the meter.

Nino.Nospam · Answer

Hey Scott,  it says EECS right on the box that houses the wires.  Is thatthe right one?  It's under the hood

Nino.Nospam · Answer

Bill, How do I get the check engine light to blink the codes for me?

Scott M · Answer

That must be it. hook it up like the web link showed. Even if #2 is confusing you. Why did you say #2 is different on yours? Just do it like the picture. See how the pyramid shaped plug is a little offset? Follow directions on the site. Do the KOER test first.

MasterBlaster · Answer

"" wrote

Bill · Answer

Excellent picture of how to place the jumper. The check engine light will flash the codes twice, have a longer pause, then flash the next code twice. Write down the codes and look them up in the book.

"MasterBlaster"

Sean Hawkes · Answer

Do not do the KOER test first or you will lose your memory codes.

Scott M · Answer

Oops you are correct.....I ment KOEO, fix those codes first......then do theKOER....

Using Voltmeter to Get Trouble Codes?

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