V70 D5 2003

[bluegallileo]

Can anyone explain this please?!! The blower motor sometimes works sometimes doesn’t. It’s been removed …. It works fine when 12v applied directly. New resistor fitted. There appears to be voltage arriving at the input (black and red). Even appears to be voltage leaving the resistor. In the input plug there are also a blue and yellow wires. If they are the key (from the CCU?) how can they seem to stop it working if all the above findings are true?!!