February 18, 2010

Automatic Climate Control Problems? Try This!!

I recently started having issues with my ECC unit. The dreaded flashing lights. So I pulled codes, and found lots of issues, the temp fan, the blower motor, damper motor and others. I thought that the ECC control unit had given up the ghost. After looking into it, I found the temp sensor was working correctly, and the blower motor was woking properly also. Upon looking into the damper motor, I found that it was not working.

So, like any good do it yourselfer, I took the damper motor apart. I figured if it’s broken, I can’t break it anymore. Upon opening the housing, I found the circuit board covered in white grease.

The black half circles were covered in grease also. I cleaned it off, and plugged it back in. all the codes went away, and the motor operated normally. These contacts touch the black half circles:

The grease is from the gears in the reduction system, and must have gotten on the contacts over the years. Put everything back together, and all is well. So, If you get the dreaded flashing lights, this is one more place to check before replacing parts.

Automatic Climate Control Problems? Try This!!

  1. Troubleshoot Auto Climate Control Prob
  2. Some Climate Control Codes & Fan Fix
  3. How to remove MCC temperature damper control arm?
  4. Air Damper Operating?
  5. Climate Control Panel Removal
  6. Volvo 850 Climate Control Knob Repair
  7. 850 Climate Control Bulb Replacement
  8. Disassembling manual climate control 9
  9. Removing Radio/Climate Control Face
  10. Power Window Master Control Switch Dead?
  11. Volvo 850, S70, V70 Cruise Control Points of Failure?
  12. Volvo Air Conditioning Problems and Fixes
Tags climate, climate control knobs, ECC, flashing lights
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