Hello, I am the owner of Iveco from 2000. In the toy car there is a problem with the blower at first it was only at the maximum speed range, so the diagnosis fell on the resistor, however, after replacing it with a drug, nothing else. The fuses are ok. The blower also works well when connected to the battery for a short time. After connecting the multimeter to the plug from the blower on the 1,2,3 range shows less than 12V while on 4 there is a lack of voltage. Here's my question, what may still be wrong and can you check the resistor somehow?
