The relay control module connects with the engine control module (ECM) to give control of the cooling fan, fuel pump, and other components.
Relay control module functionThe relay control module is vital because it links with the ECM and controls essential components of the vehicle. Parts like the cooling fan, A/C clutch, and fuel pump play a key role in making the vehicle function properly. You must maintain the relay control module in good working order to prevent any malfunctions to the ECM.
Common problems with a malfunctioning relay control moduleA malfunctioning relay control module can cause engine failure, a dead battery, or stalling.