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The blower(ventilator) of climate sometimes blowing sometimes not(ecc problem) V70-XC70 2004

posted by  someone claiming to be Denis1982 on  Fri Nov 19 12:08 CST 2021 [RELATED]

Hello!

Please,help...
I have problem with ventilator of climate control(blower) sometimes working sometimes not

I checked the blower powering directly to battery and it works well on full speed

Then i check power wires on the control if the fan and its ok 12v

Then i checked the signal wire voltage from ecc to the fan control resistor and its 0 voltage even if u pull the fan speed ON on the deck

What can i see inside ecc module in electrical part,why the signal wire to the fan is 0 voltage ?

Thanx!






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