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Originally Posted by HotZ28
What we have here is, you used a resistor key to bypass the decoder module and started the engine. Once the resistor key was removed, the engine will continue to run! Anytime the PassKey module detects an incorrect resistance after the engine is running, the PassKey module will allow the vehicle to be restarted, even with the existing failure. The SECURITY lamp will remain on, to warn the driver of a fault in the PassKey system. Word of caution here, operating in this condition also means that the vehicle can be started without the correct key resistance, and is defenseless against theft. (This may, or may not be a problem in Maine)  The ECM will also display error code 53 while in this mode. This error code does not store in VRAM memory and is only present while the condition exists. The code only serves as a diagnostic tool while troubleshooting the VATS system. |
What does it mean when the light stays off after some problems with the VATS system. It's not on at key "on" and stays off. It did come on after car was left outside in very cold (0) weather instead of garaged. It was on afor a day while carstarted and ran. Now it stays off again.
98 leSabre