Hey everyone having a issue with my sc300 1jzgte i have recently installed a fmic on it and somewhere along the way of installing it i have broken my thermo fan

I have no clue how but it wont come on so now my car overheats just wanted to know what could be stopping it from turning on i have hardwired the fan to the battery and it works just fine so is there a sensor or a fuse for that fan?any help would be great thanks.