Problem with test ALDL

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Oct 7, 2009 | 03:46 AM

vette83IT

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5th Gear

Joined: Oct 2009

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From: Milan

Problem with test ALDL

Hi!

My english is not perfect, but I hope to make me understand.

I have a question about a test ALDL for my C4 '91.

- I turn the key on start without starting the engine.
- I connect the pins A and B (as is written here http://www.corvettebuyers.com/c4vettes/codes.htm)
- the fans starting
- but the 1 flash and the other 2 flashes not appear!!!!!!

The car does not give me any code! Only the fans starting, but only the fans...

someone can give me a hand?

Thanks very very much!!!

Oct 7, 2009 | 05:07 AM

toptechx6

Safety Car

Joined: Jun 2006

Posts: 3,629

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From: FL

Without connecting pins A & B does the Check Engine light illuminate steady when you turn the key to the "ON" position?

Oct 7, 2009 | 08:48 AM

vette83IT

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5th Gear

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From: Milan

Hi toptechx6! thanks for the answer.

Yes, the light "Check Engine" is illuminate steady, and after few second, disappear.

Oct 7, 2009 | 01:35 PM

IslandPirate

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From: Houston TX

ground pins A and B BEFORE you turn the ignition to "ON"

Oct 8, 2009 | 02:10 PM

vette83IT

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5th Gear

Joined: Oct 2009

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From: Milan

yes yes island pirate.... before before

today i open behind the led panel..... and i find a mess..... cutted wires, wires with scotch.... OMG....

next week i'll take my vette to the dealer and do a test with a computer, plugged to the ALDL pin.

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