I'm new to volvoforums.com, and I'm hoping someone here will be familiar with SUM calibration and have a solution to my problem:
I recently replaced my struts, shocks, and springs on my 2007 Volvo S60 R. Now I need to calibrate the SUM. When using VIDA, I am able to reach the calibration screen, but I can't seem to complete a calibration. I have the engine running, and the car is unloaded. But in the bottom section, the solenoids always reports hyphens (-----------) or "Not calibrated." Here's a screenshot:



Oddly, I was able to get the solenoids to say, "OK," once, but the key was in position I. I suspect the system is still uncalibrated because I don't detect a great difference in Comfort, Sport, and Advanced modes. Also, VIDA has a screen that allows you to check the "keypad" (the Comfort, Sport, and Advanced buttons). If memory serves, you can access this screen from Diagnostics > Vehicle Communication > right-click SUM > Advanced > "Checking the Four-C (Continuously Controlled Chassis Concept) Keypad Unit." On that page, you can open a tool that lets you check the voltage that is read when each button is pressed. The page says something like, the voltage should 0-2.4V in Comfort, 2.4-3.5V in Sport, and 3.5-5V in Advanced. Despite each of the Four-C buttons illuminating when pressed, the voltage shown in VIDA remains roughly the same:



When I press Advanced, the "S" sport button near the shifter does turn on.
If it's useful, here are some SUM parameters from VIDA:

I have no errors on the Fault Trace pages.
Thanks!

 

I took my Volvo to a dealership yesterday to get the suspension calibrated. They didn't end up actually doing anything to the vehicle, but they didn't charge me. Their top Volvo technician checked the car and gave me a lot of information. These are the conclusions:
1. "With an S60 R automatic, you will always get hyphens in the solenoid calibration section. Just getting 'OK' in the position sensor section and 'Operation finished' on the right for both sections is good enough."
2. "The 'SUM - Switch input signal' will only change while driving and switching Four-C modes."

But I'm not sure if either of the above is true. I haven't seen any agreement for either of those points online. I also tried #2, and I still couldn't get my switch input signal voltage to change.
He also thought all Four-C modes felt like they normally would on an S60 R.

Here's how I'm hoping someone can help me:
1. What are you SUM parameter values for "Valve supply front left", "Valve supply front right," "Valve supply rear left," and "Valve supply rear right"? Should it be 0 volts? Mine are.
2. Has anyone with an R ever been able to get something besides just hyphens in the solenoid calibration section?
3. Does your "SUM - Switch input signal" change when you press your Four-C buttons? Volvo's own documentation says it should.

 

I got a helpful answer on Matthew's Volvo Site:
https://www.matthewsvolvosite.com/fo...97069&p=572849