Main Controller (MCF) Diagnostic Trouble Codes 11301.03 Swing Pilot Pressure Sensor Circuit Voltage High MS12501,0000051 –19–21FEB06–1/1 TM2361 (24JUN08) 9001-10-23 450DLC Excavator Operation and Tests 062608 PN=47 4 Short Circuit Check Disconnect harness from main controller (MCF) and pump 2 delivery pressure sensor. Check continuity between pump 2 delivery pressure sensor connector pin 2 and power and ground. Is there continuity between pin 2 and power or ground? YES: Short circuit in harness. Repair or replace harness. See Cab Harness (W1) Wiring Diagram, see Machine Harness (W2) Wiring Diagram, and see Pump Harness (W8) Wiring Diagram. (Group 9015-10.) NO:
Main controller (MCF) malfunction. See Main Controller (MCF) Remove and Install. (Group 9015-20.) – – –1/1 9001 10 23 5 Harness Voltage Check Disconnect pump 2 delivery pressure sensor from harness. Check voltage between pump 2 delivery pressure sensor connector pin 1 and machine ground. Is voltage between 4.5—5.5 Volts? NOTE: Key Switch: On YES: Open circuit in harness between main controller (MCF) and pump 2 delivery pressure sensor pin 3. Repair or replace harness. See Cab Harness (W1) Wiring Diagram, see Machine Harness (W2) Wiring Diagram, and see Pump Harness (W8) Wiring Diagram. (Group 9015-10.) NO:
Open circuit in harness between main controller (MCF) and pump 2 delivery pressure sensor pin 1. Repair or replace harness. See Cab Harness (W1) Wiring Diagram, see Machine Harness (W2) Wiring Diagram, and see Pump Harness (W8) Wiring Diagram. (Group 9015-10.) – – –1/1