Volvo S70/V70 air distribution damper motor repaired

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Checked with VIDA that the damper motor in my MY 1999 Volvo S70 is now working properly. It is now :)
It was stuck on ventilation setting, so it didn't demist the windscreen. The unit threw error code CCM-322, Air distribution damper motor active too long and didn't respond to the switch setting. I bought a replacement motor from a scrapyard, Volvo part 9134729. Opened it up, cleaned the circular carbon trace with contact cleaner and greased the cogs. For replacement on a LHD MY 1999 V70 or S70 you need to remove lower dashboard panel, knee padding and the black tube (loosen the upper dashboard panel from the left to get it out). Now the fiddling starts because you can't reach the three T15 screws holding the damper motor so you need a short Torx key and a flexible screwdriver with a T15 bit. Once the screws are out, use a flat screwdriver as a lever to pull the motor off. Align the dampers with the replacement motor by turning the white disc so it will click in place. Then replace everything in reverse order, the T15 screws back in is the hardest part :)
And whatever you do, DO NOT PERFORM A DAMPER MOTOR CALIBRATION WITH VIDA. It will brick your unit with a green flashing AC button. Just replace the stuck motor and it will self-calibrate.

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18 мар 2023

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Комментарии : 8

@jonathernthom5727 8 месяцев назад

I have a Ford Figo Trend 2017 Hatchback and had work done on the car and one part was to assess this strain noise I’d hear when switching to defrost and they said it simply needs calibration but since then, I can’t change any modes. Just blowing in all directions. Changed some fuses albeit they were fine and tried a battery disconnect and drain of residual power and still no change. Only info is: B1086:07 Air Distribution Damper Motor. Status: On-Demand DTC’s B1086:07-0A Air Distribution Damper Motor. Status: Continuous Memory DTC’s I know it’s not Volvo per vid but similar issue as can’t change airflow modes 😢

@robthecarguy5927 11 месяцев назад

Thanks a lot for this video and the very detailed description. It's given me the best understanding of this issue that I've seen anywhere! I wish I had seen it before I brought my car to the Volvo dealer with the same blend motor problem. It appears they tried to calibrate with VIDA and turned my ECC module into a door stop, exactly as you've described. I've replaced the ECC module with a used one, thankfully returning it to it's previous usable state, but of course, I still have the blend motor problem. A couple of questions if I may. When you replaced the motor, you mention that you turned the white cam disc until it clicked. Did you pull the disc off of the motor and do this first, or while attached to the motor? I notice there is a channel on the front and back of the disc where the damper lever pins ride. Is there only one way these can go, and is it difficult to line them up? I have a replacement motor that I plan to rebuild as you did and then install it. Is there a particular position in its sweep that I should put the motor in before installing, to avoid calibration issues? Thanks again!

@volvo480 8 месяцев назад

What you should do is leave the white disc on, just pull the motor off. Look in which position the replacement motor is and turn the white disc by hand so it will approximately match the position. Then push the replacement motor back on the disc, it will fit only one way. Put the screws and connector back in and you're good to go!

@charlesconto3154 8 месяцев назад

Is there any way to unbrick the ECC? I attempted to calibrate before reading this sadly.

@volvo480 8 месяцев назад

Sadly I haven't found a way yet. I am still investigating the possibility to control it the way it worked before VIDA/DICE, with a switch and a LED.

@charlesconto3154 8 месяцев назад

@@volvo480 So good news, I actually have found a way and I did fix my ECC unit. You need the OBD-II app on android and a compatible ELM-327 bluetooth scan tool. There is a function in that app that will kick the ECC out of relearn mode. The defrost motor works great now, and you can do other helpful things with that app. My recommendation is to STEER CLEAR of VIDA for any ECC issues with these cars, and use the OBD-II app. It works with most all 850's and S/V/C70s.