HORN DOES NOT OPERATE

HORN DOES NOT OPERATEContinued - TM-9-2350-247-20-1_260

TM-9-2350-247-20-1 Crane (CAB) Components Recovery Vehicle Full Tracked: light Armored M578 (2360-00-439-6242) (EIC:3LA) Manual
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TM 9-2350-247-20-1 HORN DOES NOT OPERATE 0044 00 INITIAL SETUP: Maintenance Level Unit Tools and Special Tools General Mechanic’s Tool Kit (WP 0541 00, Item 57) Multimeter (WP 0541 00, Item 29) Jumper Wire Personnel Required Unit Mechanic Helper (H) References See your -10 Equipment Condition Engine stopped (see your -10) Carrier blocked (see your -10) NOTE M548A1 and M548A3 troubleshooting procedures are the same. M548A1 procedure i s shown. T 1. Turn MASTER SWITCH ON. 2. Is MASTER POWER indicator on? YES NO TN 1. Go to MASTER SWITCH ON indicator does not light (WP 0049 00). Y 1. Remove horn ground lead plug (1) from horn jack (2). 2. Measure continuity between horn ground lead plug (1) and ground. 3. Does multimeter read 0 ohms? YES NO YN 1. Replace horn ground lead and/or connector (WP 0289 00). 2. Verify no faults found. 0044 00-1

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