The CCRM has relays and switches that control or energize the engine cooling fan, AC clutch (to activate the AC compressor), fuel pump and the Powertrain Control Module (PCM)..p>
The relay control module connects to the powertrain control module to allow control of the cooling fans, A/C clutch and fuel pump, as well as the main power relay.
Relays are electrical switches that use electromagnetism to convert small electrical stimuli into larger currents. These conversions occur when electrical inputs activate electromagnets to either make or break existing circuits.
Once the vehicle determines that the systems are secure, the vehicle will allow you to restart. The fuel pump shutoff switch is located behind an access panel on the right side of the luggage compartment. There is a red reset button on the fuel pump shutoff switch.
One of the most common signs is the car not starting. If you turn on the ignition and the car won’t start, it could be because the fuel pump fuse has blown.
The fuel pump relay plays an essential role in delivering fuel to your engine for combustion. Powered by the ignition and/or powertrain control module (PCM), the main function of the fuel pump relay is to supply the fuel pump with sufficient current. If the fuel pump relay doesn’t work, then neither can the fuel pump.
What kind of device is the relay module? Explanation: The relay module is a switching device because its main function is to switch or change the flow of electricity, or to stop it altogether. In this way, it controls the operation of a particular circuit.