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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

DLC Issues.

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Old Dec 4, 2010 | 12:35 PM
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Default DLC Issues.
For some Stupid reason my DLC connector wont work on my 94' camaro. I check for voltage and ground, those are both fine. The serial data cable has continuity, IDK how to check for signal however.

Does anyone know a way to trouble shoot this better ? I need to figure out a code my ECU is throwing
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Old Dec 4, 2010 | 01:17 PM
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Try to scan a different obdI car to rule out your cable and scanner
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Old Dec 4, 2010 | 01:44 PM
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Originally Posted by BlackBird87
Try to scan a different obdI car to rule out your cable and scanner
Already did that. The scanner was used on a 94 truck and worked fine. It says that it fails to communicate with the ECU.
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Old Dec 4, 2010 | 01:56 PM
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you need to check a wiring diagram to the pcm. is it the first time u use it, i thought one of those thing needs a power source (12+ cigar lighter). but it looks like u have it all (ground-voltage-signal). its weird
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Old Dec 4, 2010 | 03:34 PM
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Get a paperclip and connect terminals A & B. Then turn the key on and count the blinks.
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Old Dec 4, 2010 | 03:35 PM
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Originally Posted by 05HD
Get a paperclip and connect terminals A & B. Then turn the key on and count the blinks.
This only works with 93s. He has a 94.
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Old Dec 4, 2010 | 03:39 PM
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Originally Posted by curacaoz28
you need to check a wiring diagram to the pcm. is it the first time u use it, i thought one of those thing needs a power source (12+ cigar lighter). but it looks like u have it all (ground-voltage-signal). its weird
It is.. The cable i bought to hook up to my laptop didnt say Anything about a 12v source. And my friends scanner didnt need it either. along time ago when i first did afew things over i had used another scanner that did have a plug for the cigarette lighters.. The only thing is i cant get a hold of that scanner anymore
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Old Dec 4, 2010 | 03:48 PM
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Originally Posted by RamAir95TA
This only works with 93s. He has a 94.
Another 93 win.

Hit up Vatozone and see if their scanner works on it.
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Old Dec 5, 2010 | 12:38 PM
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Originally Posted by 05HD
Another 93 win.

Hit up Vatozone and see if their scanner works on it.
Thanks for the tip. I wasnt planning on by a scanner as a fix for a fix. Whats there website that i can check it out tho.

Anyone else have any thoughts on what could be wrong ?? i really need to fix this
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Old Dec 5, 2010 | 02:42 PM
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Originally Posted by SoxXpupPeT
Thanks for the tip. I wasnt planning on by a scanner as a fix for a fix. Whats there website that i can check it out tho.

Anyone else have any thoughts on what could be wrong ?? i really need to fix this
If the car will make it to the store, they will bring a scanner out in the parking lot and check the codes for free. If their scanner works, you know it is the scan tool, not the car.

www.autozone.com
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Old Dec 5, 2010 | 04:01 PM
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Originally Posted by 05HD
If the car will make it to the store, they will bring a scanner out in the parking lot and check the codes for free. If their scanner works, you know it is the scan tool, not the car.

www.autozone.com
They don't do that anymore
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Old Dec 5, 2010 | 06:59 PM
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The car drives fine, the SES light is on tho. Ill try to bring it by someone that has a different scanner to see if that works. IDK why my usb cable doesnt work then
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