Main Controller (MCF) Diagnostic Trouble Codes 11404.04 Power Dig Solenoid (SG) Valve Feedback Current Low MS12501,000005B –19–14JAN06–1/1 Power Dig Solenoid (SG) Diagnostics Power dig solenoid (SG) current 56 mA or less. –1/1 TM2361 (24JUN08) 9001-10-41 450DLC Excavator Operation and Tests 062608 PN=65 3 Solenoid Function Check Switch power dig solenoid (SG) harness connector with another solenoid valve in solenoid valve manifold. Clear diagnostic trouble codes (DTC) and re-check for DTC. Does diagnostic trouble code stay with power dig solenoid (SG)? YES: Power dig solenoid (SG) malfunction. Replace solenoid. NO: Main controller (MCF) malfunction. Replace controller.
See Main Controller (MCF) Remove and Install. (Group 9015-20.) – – –1/1 9001 10 41 1 Solenoid Resistance Check Disconnect harness connector from power dig solenoid (SG). Check resistance of solenoid. Is resistance between 14.8—22.2 ohms? YES: Go to Continuity Check. NO: Power dig solenoid (SG) malfunction. Replace solenoid. – – –1/1 2 Continuity Check Disconnect harness connectors from main controller (MCF) and power dig solenoid (SG). Check for continuity between main controller (MCF) connector A pin A23 and power dig solenoid (SG) harness connector pin 1. Check for continuity between main controller (MCF) connector A pin A7 and power dig solenoid (SG) harness connector pin 2.
Is there continuity between the pins? YES: Go to Solenoid Function Check. NO: Open circuit in harness. Repair or replace harness. See Cab Harness (W1) Wiring Diagram, see Machine Harness (W2) Wiring Diagram, and see Control Valve Harness (W7) Wiring Diagram. (Group 9015-10.) – – –1/1