RG with MTC

Upon power up (Power switch on), the A/C-Heater Control Module sends a blower relay on request to the FCM over the PCI Bus. The front blower relay is then powered through low side control through FCM pin 30. The relay provides the high side to the blower motor, and the blower speed is governed through low side control in the A/C-Heater Control Module. This circuit is electronically controlled and continuously monitored for malfunctions.