Security
#1
Security
96 Trans am. The car was running fine and now it won't crank. Any ideas? I also noticed is I have a red security light that flashes when the key is not in the ignition and while it is in the ignition. Any ideas of what the problem could be?
#2
TECH Fanatic
iTrader: (4)
Troubleshooting the VATS (Vehicle Anti Theft System); an excellent write-up:
http://shbox.com/1/pass_key.html
Post back with your findings and we'll help you along.
http://shbox.com/1/pass_key.html
Post back with your findings and we'll help you along.
#5
Ok so I check the chip and it is fine and I did the bypass and still no start so I check the started wires and I get 12 v to the big wire but I get nothing on the small wire even when I had the person turn the key to start it I didn't get anything on the little wire any idea?
#6
TECH Veteran
What is the status of the security light? Is it now off? How did you determine the chip was "fine"? Did you test it as suggested in the link posted above? If it tested good to the connection under the dash, why did you bypass it, anyway?
Here is a schematic of the starting system that can help you troubleshoot.
Here is a schematic of the starting system that can help you troubleshoot.
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#8
TECH Veteran
If the light is still on, your bypass did not work or there is another issue with the BCM or wiring that is causing a problem. I'll ask again...did you actually test under the dash to see if the key resistance is getting through the column as suggested in the VATS info link? You have to start narrowing down the problem to be able to fix it. If you looked at the starting schematic link I posted, you know everything that is involved to crank the engine.
#9
TECH Addict
iTrader: (1)
Ok so I check the chip and it is fine and I did the bypass and still no start so I check the started wires and I get 12 v to the big wire but I get nothing on the small wire even when I had the person turn the key to start it I didn't get anything on the little wire any idea?