Main Controller (MCF) Diagnostic Trouble Codes 11303.04 Arm Roll-in Pilot Pressure Sensor Circuit Voltage Low MS12501,0000055 –19–24JAN06–1/1 TM2361 (24JUN08) 9001-10-33 450DLC Excavator Operation and Tests 062608 PN=57 4 Short Circuit Check Disconnect harness from arm in pilot pressure sensor and main controller (MCF). Check continuity between arm in pilot pressure sensor connector pin 2 and power and ground. Is there continuity to power or ground? YES: Short circuit in harness. Repair or replace harness. See Cab Harness (W1) Wiring Diagram and see Machine Harness (W2) 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 33 5 Harness Voltage Check Disconnect arm in pilot pressure sensor from harness. Check voltage between arm in pilot 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 arm in pilot pressure sensor pin 3. Repair or replace harness. See Cab Harness (W1) Wiring Diagram and see Machine Harness (W2) Wiring Diagram. (Group 9015-10.) NO: Open circuit in harness between main controller (MCF) and arm in pilot pressure sensor pin 1. Repair or replace harness.
See Cab Harness (W1) Wiring Diagram and see Machine Harness (W2) Wiring Diagram. (Group 9015-10.) – – –1/1