PLATE-SWITCH 5208098 - Caterpillar

Outputs
The ECMs respond to decisions by sending electrical signals to the outputs. The outputs can create an action or the outputs can provide information to the operator or the service technician. The outputs of the ECM are listed in tables .Solenoids
Demand Fan Solenoid
Illustration 16 g03061277The Demand fan solenoid is connected to a PWN output on the Machine ECM. The fan speed is reduced to minimum when the temperature. When the temperature reaches a certain level, the fan speed increases to provide more system cooling. If the temperature does not decrease, the fan speed is gradually increased until the temperature returns below the target temperature.Parking Brake Solenoid
Illustration 17 g06353081The two parking brake solenoid valves are outputs of the ECM. The ECM energizes the parking brake solenoid valves with approximately +24 DCV. Pressure oil will flow through the parking brake solenoid valves when the parking brake solenoids are energized. The parking brake solenoid valves send oil pressure to the parking brake section of the wheel brakes. The solenoids for the parking brake connect to the ECM through contacts.Retarder Solenoid
Illustration 18 g03510996The retarder supply solenoid is an output of the Machine Electronic Control Module (ECM). The supply solenoid for the retarder is designed to turn the flow of the supply oil to the control solenoid on and off. The supply solenoid valve receive approximately 24 volts (DC) at 100 rpm less than the programmed control speed setting. When the retarder lever is in the ON position, the supply solenoid valve receive approximately 24 volts (DC). The supply solenoid