The problem is that the loose connection can cause noise spikes, even though it's still going to the TCU. Just tune to any AM radio station and tap on the antenna with a paper clip, the pops are like the spikes the TCU will likely see if the connection is too loose. You could solder the pin to the tip of the alligator clip for a more reliable connection.
Good luck, but you may find the electronic circuitry more complex than anticipated. You will need to isolate the signal from the driving source to prevent feedback from damaging components upstream from the TCU and the circuit will need to be very tolerant of noise on the supply line as well as not introduce any of its own.
KuoH
Quote:
Originally posted by deruvian
I thought about alligator clips, and they do seem a bit flimsy. This loose connection might be slightly insufficient, but no erractic codes will be thrown. The signal will still be going to the TCU, it will just be going to my multimeter as well.
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