Operational Checkout Procedure Operational Checks—Key Switch Off, Engine Off Checks –1/1 TM2361 (24JUN08) 9005-10-2 450DLC Excavator Operation and Tests 062608 PN=218 Horn Circuit Check TX1001366 –UN–15DEC05 1—Horn Button Key switch OFF. Push horn button (1) on top of left pilot control lever. LISTEN: Does horn sound? YES: Go to next check. NO: Check horn 10 A fuse (F11) (Marked Horn). See Fuse and Relay Specifications. (Group 9015-10.) NO: Check horn wiring harness. See Cab Harness (W1) Wiring Diagram (Group 9015-10.) and see Machine Harness (W2) Wiring Diagram. (Group 9015-10.) – – –1/1 9005 10 2