REGULATOR GP-VOLTAGE 1303460 - Caterpillar

Vibratory Electrical System
Illustration 1 g01966693
Electrical Schematic for Vibratory System
(1) B+ from main power supply
(2) Vibratory fuse
(3) Gauge fuse
(4) ECM fuse
(5) "CAN" port
(6) "CAN" resistor
(7) Electronic control module
(8) Drum selector switch
(9) From light master switch
(10) Propulsion lever
(11) Propulsion sensor
(12) Vibratory indicator
(13) Reverse solenoid
(14) Forward solenoid
(15) Front motor selector solenoid
(16) Vibratory mode control switch
(17) Vibratory tachometer
(18) Front motor speed sensor
(19) Rear motor speed sensor
(20) Rear motor selector solenoid
(21) Amplitutde selector switch
(22) 2 Amplitude machines must connect C18 to C20 and C19 to C21. 5 Amplitude machines must connect C18 to C21 and C19 to C20. When the main power relay is energized, power is available at the ECM fuse, the vibratory fuse, and the gauge fuse through 112-PU(Purple) wires. Power transfers from the ECM fuse to the following places:
Contact "1" of the propel sensor
Contact "28" of connector "C4"
Terminal "2" and terminal "47" through terminal "50" of the ECM.The 103-YL(Yellow) wires distributes power from the vibratory fuse to contact "2" of the drum selector switch, contact "2" of the vibratory mode control switch, and contact "5" of the amplitude selector switch (if equipped). Power transfers from the gauge fuse to contact "I" of the vibratory tachometer.After the ECM receives power, it begins to monitor the circuit at terminal "29". The vibratory master switch on the propel lever provides the input signal to this terminal. When the vibratory master switch is depressed, the circuit at terminal "29" of the ECM is complete. This prompts the ECM to initiate the vibratory control logic.Since the vibratory master switch is a momentary type switch, the circuit at terminal "29" of the ECM is only complete while the switch is held. When the switch is released, the circuit at terminal "29" returns to its natural state. The ECM monitors the number of times that the vibratory master switch is closed to determine if the vibratory system is ON or OFF. The first time the vibratory master switch is closed (and on all subsequent odd numbered times), the ECM enables the vibratory system. The second time the switch is depressed (and on all subsequent even numbered times), the ECM disables the vibratory system.When the ECM determines that the vibratory system is ON, the ECM monitors the circuit at terminal "16" to determine the position of the vibratory mode control switch and the circuit at terminal "24" to determine the position of the propel lever. When the vibratory mode control switch is in the MANUAL position, contact "2" and contact "3" of the switch are open, and the circuit at terminal "16" of the ECM is open. Terminal "24" of the ECM monitors the input signal from the propel lever sensor. The sensor generates a pulse width modulated signal with a duty cycle of between 9 and 91 percent. The duty cycle (time on versus time off) of the signal depends on the position of the propel lever. The lowest duty cycle corresponds to the FULL REVERSE position, and the highest duty cycle corresponds to the FULL FORWARD