Main Controller (MCF) Diagnostic Trouble Codes 11920.02 Fuel Flow Rate Message Error MS12501,000006A –19–17JAN06–1/1 Controller Area Network (CAN) Diagnostics –1/1 TM2361 (24JUN08) 9001-10-85 450DLC Excavator Operation and Tests 062608 PN=109 27 Monitor Controller CAN Resistance Check Connect all connectors except monitor controller connector B (X20). Check resistance between pins B6 and B7. Is resistance between 110—130 Ω? YES: Go to DTC Check. NO: Malfunction in any controller on CAN. – – –1/1 9001 10 85 28 DTC Check Connect connector to monitor controller. Clear diagnostic trouble codes (DTC) and re-check for DTCs. Is DTC 11918.02-Work Mode Message Error still present? YES:
Monitor controller malfunction. Replace. See Monitor Controller Remove and Install. (Group 9015-20.) NO: Check the connection to monitor controller. – – –1/1 1 CAN Harness Check Check harness connections to controllers and between harnesses. Clear codes and re-check DTCs. Is DTC 11920.02-Fuel Flow Rate Message Error still present? YES: Go to Continuity Check MCF and ICF. NO: Main controller (MCF) and harness are OK. – – –1/1 2 Continuity Check MCF and ICF Check for continuity between main controller (MCF) pin C4 and information controller (ICF) pin C5. Check for continuity between main controller (MCF) pin C15 and information controller (ICF) pin C11.
Is there continuity between the connectors? YES: Go to Continuity Check MCF and ECM. NO: Open circuit in CAN between main controller (MCF) and information controller (ICF). Repair or replace harness. See Cab Harness (W1) Wiring Diagram. (Group 9015-10.) – – –1/1