2002 Ranger - code reader will not read codes

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Term Limits Now - 06 Dec 2007 21:03 GMT

2002 Ford Ranger
3.0l V6

Engine warning lamp is [on]. I tried two OBD-II readers, neither
seemed to recognize that it was plugged in to the connector, (under
the dash, driver's side)

According to an OBD-II schematic I located, ping #16 should show 12v.
I checked that with my voltage tester, and it read nothing - no
voltage. Checked with engine running, engine off, and ignition switch
to [on].

Any ideas on this? Bad connector? Could I jumper 12v to pin #16 in
order to get the reader to work?

Thanks.

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Term Limits Now - 10 Dec 2007 01:47 GMT

> Any ideas on this? Bad connector? Could I jumper 12v to pin #16 in
> order to get the reader to work?

> Thanks.

You have a bad fuse. It should be a 20a one which also powers an
accessory port. Chances are that a 12v plug-in caused the fuse to
blow.

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Whitelightning - 10 Dec 2007 05:03 GMT

>> Any ideas on this? Bad connector? Could I jumper 12v to pin #16 in
>> order to get the reader to work?
[quoted text clipped - 4 lines]
> accessory port. Chances are that a 12v plug-in caused the fuse to
> blow.

If it is that, one has to wonder what idiot engineer designed that system.

Whitelightning

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david - 10 Dec 2007 10:26 GMT

> "Term Limits Now" <pinto_a1@hotmail.com> wrote in message

news:ff0128a8-95c3-4501-96e9-399813e8ed59@d21g2000prf.googlegroups.com...

>>> Any ideas on this? Bad connector? Could I jumper 12v to pin #16 in
>>> order to get the reader to work?
[quoted text clipped - 9 lines]
>
> Whitelightning

You meant, of course, the accountant who asked the engineer to cut 50
cents from the cost of his design. Doesn't sound like much until you
multiply it by a million vehicles.

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aarcuda69062 - 10 Dec 2007 21:46 GMT

> >> Any ideas on this? Bad connector? Could I jumper 12v to pin #16 in
> >> order to get the reader to work?
[quoted text clipped - 8 lines]
>
> Whitelightning

Curious as to why you think the design is idiotic.

Seems rather intuitive to me; no power to the diagnostic
connector, check for power at the cigarette lighter/accessory
plug. No power at either, check common fuse.

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Whitelightning - 14 Dec 2007 03:21 GMT

>> If it is that, one has to wonder what idiot engineer designed that
>> system.
[quoted text clipped - 6 lines]
> connector, check for power at the cigarette lighter/accessory
> plug. No power at either, check common fuse.

cuda, I was thinking something else, like fuse blows and then engine dies.,
If all it does is power diagnostic then I retreat from my statement. Of
course if you dont know the fuse feeds both the power outlet and diagnostic
connector than you dont intuitively know to check the fuse, and that brings
up the next question, does the fuse cover list the diagnostic connector, or
the owners manual?

Whitelightning

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