Main Controller (MCF) Diagnostic Trouble Codes 11202.04 Pump 2 Delivery Pressure Sensor Voltage Low MS12501,0000050 –19–21FEB06–1/1 TM2361 (24JUN08) 9001-10-21 450DLC Excavator Operation and Tests 062608 PN=45 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.
Replace controller. See Main Controller (MCF) Remove and Install. (Group 9015-20.) – – –1/1 9001 10 21 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