TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
Page 265 of 870
TM 9-2350-247-20-1 HORN DOES NOT OPERATE—Continued 0044 00 3Y 1. Turn MASTER SWITCH OFF. 2. Install jumper wire between main wiring harness circuit 25 plug (1) and ground. 3. Partially remove instrument panel (WP 0256 00). Disconnect circuit 25/25A plug (2) from horn switch (3). 4. Measure resistance between circuit 25 lead and ground. 5. Does multimeter read 0 ohms? YES NO 3YN 1. Remove jumper wire. 2. Repair main wiring harness circuit 25 (WP 0294 00). 3. Verify no faults found. 0044 00-3