Use a 7mm socket to unhook the electrical connector from the ICM. With a 5.5mm socket, remove the six bolts holding down the three coils. Lift the coils off and lay them next to the ICM. Lift ICM off bracket, put new ICM on bracket, put coils on new ICM and bolt them down. Reconnect the ICM connector.

There is no need to remove any pullies to change an ICM.