93 Lt1 Trouble code- 51 not registering correct key
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Racer
Joined: Nov 2022
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From: Massachusetts
Team Owner
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*** Or if your using a resistor to the car side harness your key 'as is' is fine.
Last edited by WVZR-1; Feb 14, 2025 at 06:02 PM.
Safety Car
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Thread Starter
Racer
Joined: Nov 2022
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From: Massachusetts
Safety Car
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Yet key #5 is obviously not correct as you are getting a solid security light. The interrogator measures keys, but also will help in figuring out the CCM side.
Team Owner
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Safety Car
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Melting Slicks
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The Interrogator can also be plugged into the connector under the dash to try the 15 codes to find the one that the CCM is programmed for. Find a locksmith that has one and contract him to figure out the required code. Even if the correct code is the last one he tries he'll be done in an hour and a half including cutting you new keys.
Last edited by IHBD; Feb 14, 2025 at 08:58 PM.
Racer
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Instead of paying a locksmith a couple hundred dollars just go to a local electronics store, buy a 1200 ohm resistor for like $2, solder some short wires with thin, single male end connectors to it, use it to jumper the 2 pin cylinder breakout connector going to the ccm at the base of the steering column and see if it starts. For what it’s worth if you’re getting a data pid about your key resistance to the ccm, the entire circuit from the key cylinder to it is good. If your ecm data show no fuel allowed/ invalid theft data, the entire circuit from the ccm to the ecm is good.
Thread Starter
Racer
Joined: Nov 2022
Posts: 345
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From: Massachusetts
Code51
Just wanted to let everyone that the problem was the wrong key resistance, I brought a vats by-pass kit. The key number was 6.(1.47K)So I plan on getting some key blanks and having them cut.
Melting Slicks
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From: Saskatoon Sask.
I believe you may have been the only one that didn't realize you had the wrong key/resistor.