Cruise control does not work

Just so I understand the issue. The cruise does not work but when you press the on/off button the cruise light comes on in the cluster but it does not set/hold the speed?

I see you replaced the brake pressure switch on the master cylinder correct? Have you monitored the brake pedal position switch to see if the control module says the brakes are applied? If the light on the cluster comes on when you press the switch on the steering wheel then it sends the message down to the servo where it needs to see the brake applied input is off and it gets this from the position switch and the pressure switch.

Also, if you look at this servo on the wiring diagram then you will see each of the inputs that it needs to see in order to activate the cruise. The lamp in the cluster is turned on by getting the signal on the Control Switch in (blue/black) and then sends the signal on the Set Lamp Output (Org/Lt Blu) signal that goes to the cluster. This shows that the circuit from the switch all the way to the cluster is working so I would not think the clock-spring is the issue. I suspect you have another input that is preventing your cruise from setting.

I don't think the horn not working is related because this has the buttons on the steering wheel and not the horn pad as the switch correct?

I would investigate all the inputs to the servo before replacing the clock-spring.

Let me know if you need more information. Thanks

No problem. Just update the post whenever you can. I get alerts to my phone when you do. Thanks.

Ok. When you say the self diag system you are talking about when you press the trip reset while turning the key on?

If so, this is telling you if there are codes in just the cluster. If you have none here then I would think the On/Off button are working. Also, you said the cruise light in the dash work correct? If this is the case, then your switches to the servo and the servo to the cluster are working.

If cruise does not set then we need to see if you have voltage on the brake position switch. It looks like the brake pressure switch is used as a back up. According to this attachment the BPP is normally closed to ground so you should have 0 volts on the Tan/Lt Blue wire with the system on and brakes released. When you press the brakes or clutch it should go to 12 volts.

However, due to you saying that the horn pad is the air bag, you may be correct that these switches uses the air bag sliding contacts which is the same thing the horn uses.

So I would suggest testing your brake input to the servo and if that appears to be operating and your indicator in the dash is working then the set/accel buttons are not working because of the contacts.

Sorry. You are correct. The speed control test is actuated that way. I was thinking of the cluster itself. However, you are getting the result showing that the on/off switches are working but the ones on the other side are not. The horn does not work either so at this point I think you are good with the air bag sliding contact as your issue.

I agree that I don't want to throw parts at it but here is how that test works. When you enter the diag mode and you press the buttons, when the circuit is completed all the way from the switch to the cluster/display, the lamp flashes. If it is not flashing when you press these buttons then the signal is not getting to the cluster.

Keep in mind, these sliding contacts in the clockspring can allow some of the function to work while others do not. Basically, the rule of thumb I go by is if all functionality in the steering wheel controls, airbag light is on, or horn doesn't work, its the clockspring.

Here is a pretty good video that shows one and explains it a little bit more.

https://youtu.be/a-PC8r8GkCA

Good deal. Come back with more questions. We are here to help so whatever you have there is someone on here that can help.