Constant Control Relay Module

Constant Control Relay Module (CCRM) and Powertrain Control Module (PCM) control cooling fan motor operation. Cooling fan will be energized when engine operating temperature is 215°F (102°C) and de-energized when engine temperature is 210°F (99°C). When A/C is activated and vehicle speed does not provide enough natural airflow, cooling fan will be activated when vehicle speed is 43 MPH or less. Cooling fan will be deactivated when vehicle speed is 48 MPH.