I just ran mine up near the RAM and now my fan works correctly. In general, the lights, buttons, charging, fans, and optional display modes are all examples of items that rely on the SMC for proper behavior. Then you can plug the sensor back in to the appropriate socket on the main board and run the sensor to somewhere where it might get hot. The System Management Controller, or SMC, is a controller in your Mac that is responsible for handling a number of power- and controls-related features of your computer. All you need to do is pull the plastic "cover" off and then gently peel off the sensor from the hard drive.
SMC FAN CONTROL MAC NOT WORKING FULL
The full name of SMC is the system management controller. After resetting PRAM/NVRAM, your MacBook should start up normally.
) you will see that the thermal sensor is just softly glued to the hard drive, probably because that's the thing that would tend to get the hottest when the system is working hard. If your Mac computer is using the Apple T2 Security Chip, you can release the keys when you see the Apple logo appears and then disappears for the second time. If you have a look at step 21 of the Crucial SSD installation guide (. And those wires don't actually go into the hard drive either. A cursory glance will make you think those wires are just part of the hard drive, some superfluous connector that it appears you don't need, since the SSD works fine with just the main connector attached.
The wires for that thinner connector are stuck to the side of the hard drive with the plastic "cover". When you take the stock hard drive out you will see that there are two connectors - the main hard drive connector and another, thinner connector.
The "missing" componet is the thermal sensor, which is attached to the stock hard drive.