[quote=”dtidman” post=203185]Check it loaded if you can. Sometimes unloaded voltage measurements are unreliable.
For freeze frame, that is a snapshot of the data when the code is set. There should be a option on the scanner to read the freeze frame data. I’m not familiar wit the snap on so I can’t give you further pointers. In the freeze frame, look for heater circuit values.[/quote]
So I need to test it when it is plugged in and the CEL is on? Should it be hot as well?