TM2361 (24JUN08) 9001-10-22 450DLC Excavator Operation and Tests 062608 PN=46 Main Controller (MCF) Diagnostic Trouble Codes Pump 2 Delivery Pressure Sensor Diagnostics Pump 2 delivery pressure sensor voltage 0.25 volts or less. 9001 10 22 – – –1/1 1 Sensor Check Switch pump 2 delivery pressure sensor with pump 1 delivery pressure sensor. Clear diagnostic trouble codes (DTC) and re-check DTCs. Does DTC follow delivery pressure sensor? YES: Pump 2 delivery pressure sensor malfunction. Replace sensor. NO: Go to Sensor Circuit Check. – – –1/1 2 Sensor Circuit Check Disconnect connector to pump 2 delivery pressure sensor. Check voltage between terminals 1 and 3 of harness.
Is voltage between 4.5—5.5 volts? NOTE: Key Switch: ON YES: Go to Open Circuit Check. NO: Go to Harness Voltage Check. – – –1/1 3 Open Circuit Check Disconnect connector to pump 2 delivery pressure sensor. Check continuity between main controller (MCF) connector C pin C12 and pump 2 delivery pressure sensor pin 2. Is there continuity between the pins? YES: Go to Short Circuit Check. NO: Open 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.) – – –1/1