Cruise control will not turn on

Sorry. This is the connector that goes into the clock spring from the servo. Basically, what you are doing is checking the circuit from the clock spring to the servo to make sure the wire is okay. If this is okay, then you have an issue with the switch or the clock spring and most likely the clock spring.

The fact that you are getting 5.7 volts on this circuit when you are pressing the button means you have high resistance in the circuit. I would double check this on pin 5 at the servo just to confirm we are not going off incorrect info.

You should have over 10 volts in order for the servo to turn the system on. You have some voltage, so we know the circuit is intact, but you have high resistance somewhere that is causing the voltage to drop in half.

To try and illustrate this, using words the circuit starts at the switch on the steering wheel. When you press the button, it sends voltage down through the clock spring to the c220 connector where the LB/BK wire takes that voltage to the servo. What you are testing is the wire that leads to the servo to find out if that is the source of the high resistance. If it is not, then the clock spring would be the issue.

However, this is just putting the pieces together and requires testing to confirm this.

I am attaching the process on how to replace the clock spring. You will see the connector in this process. Also, the connector view depending on if you have aux controls or not. However, both connectors have this circuit in pin 1.

So, you are checking the resistance by putting one meter lead on pin 1 in the C220 and the other lead in pin 5 of the servo connector and checking the ohms. Both connectors need to be unplugged and you are literally checking just the wire and you should have less than a half ohm on a wire like this.

This guide covers resistance checking in a little more detail:

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Let me know what questions you still have. Thanks