Verify Temporary Power Fix

2:30

35:47

37.2K views

At 2:30 in

Logan Learns How To Wire Relays! LSA Monte Carlo & Turbo Escalade Test Drive

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What happens here

The presenter shows an in-car display unit that now correctly reads the transmission fluid temperature (TFT) at 73 degrees Fahrenheit and vehicle speed at 0 MPH. Previously, it showed "nothing" for temperature and 158 MPH constantly, indicating a lack of communication from the transmission. To confirm the diagnosis, he instructs his helper to disconnect the temporary power wire. Upon disconnection, the display immediately reverts to 158 MPH, confirming that the loss of consistent 12V power was the cause of the transmission's malfunction.

Goal: Confirm the lack of 12V constant power is the root cause of transmission malfunction.

Tools and materials

In-car display unit — Monitoring transmission parameters
Temporary power wire connection — Simulated power supply

What they say

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can you hear that ringing yeah i can that is the tcm i believe from what i read it'll make it has like a wheeling sound or something if it works so i turned the key on and boom we have zero mile an hour rating again and 73 degree transmission temperature that used to say nothing and this used to say 158 no matter what i did now i kind of want to test something here i want to pull that wire off and see if this goes back to 158 okay you want to hold this i'm filming it take that off yes actually just for theater i'm just going to cut it are you ready okay three two one yep really yeah like clockwork it was funny all right create this suck it i win we know how to fix this now and that also means knock on wood we should just be able to drive it to the new shop and not have to put it on a trailer if i do the fans honestly i don't want to jinx it yeah we'll just we'll trailer it over there knowing that we're on the right track at least now we

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