Code scanner reads "Fail". And It won't start.

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Nov 14, 2005 | 03:30 PM

ropertp256

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Code scanner reads "Fail". And It won't start.

I initially posted under the title "fuel pump question" but have since changed my mind. After reading several posts on a no start condition, I thought it might be a bad CPS, but when I hooked up my scan tool, all I get is "fail". I can not find any blown fuses under the dash or in the box on the driver fender. How can I trace the power supply to the computer?

Thanks,
Robert

Nov 14, 2005 | 03:33 PM

ropertp256

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Quote:

Originally Posted by ropertp256

p.s. it is a 97 7.3

Nov 14, 2005 | 07:09 PM

RubberDuck

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From: Marble Falls, Texas

Watch the tach while you crank it. If it doesn't move, it's probably the cps.

RubberDuck

Nov 15, 2005 | 11:34 AM

ropertp256

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I would like to know if the computer is getting power because the "fail" message from the scan tool indicates that it isn't. Is there a link to the electrical diagrams that someone knows about?

Nov 15, 2005 | 01:02 PM

1997F-350

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From: SHELTON, WA

have you ever used the scan tool on your truck prior to this? not all code readers work on our trucks. it has to be a quality scanner.

Nov 15, 2005 | 03:18 PM

ropertp256

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The scanner works on the other Fords I have used it on, other makes as well. The only time I have seen this message before was when the power supply to the computer was undone on other vehicles. However, the cel on this paticular truck has never come on except for bulb check.

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