John Deere 450DLC — Controller Area Network (CAN) Diagnostics

Main Controller (MCF) Diagnostic Trouble Codes TM2361 (24JUN08) 9001-10-97 450DLC Excavator Operation and Tests 062608 PN=121 1 CAN Harness Check Check harness connections to controllers and between harnesses. Clear codes and re-check DTCs. Is DTC 11983.02-Intake Air Temperature Message Error still present? YES: Go to Continuity Check MCF and ICF. NO: Main controller (MCF) and harness are OK. – – –1/1 9001 10 97 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 3 Continuity Check MCF and ECM Check for continuity between main controller (MCF) pin C4 and engine control module (ECM) pin 18. Check for continuity between main controller (MCF) pin C15 and engine control module (ECM) pin 37. Is there continuity between the connectors? YES: Go to Continuity Check MCF and Monitor Unit. NO: Open circuit in CAN between main controller (MCF) and engine control module (ECM). Repair or replace harness.

See Cab Harness (W1) Wiring Diagram and see Machine Harness (W2) Wiring Diagram. (Group 9015-10.) – – –1/1