TM-9-2350-247-20-1 Unit Maintenance Manual Volume 1 M548A1 M548A3 Tracked Cargo Carrier Download
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TM 9-2350-247-20-1 BLACKOUT DRIVE LIGHT DOES NOT WORK 0035 00 INITIAL SETUP: M a i n t e n a n c e L e v e l Unit T o o l s a n d S p e c i a l T o o l s General Mechanic’s Tool Kit (WP 0541 00, Item 57) Multimeter (WP 0541 00, Item 29) P e r s o n n e l R e q u i r e d Unit Mechanic R e f e r e n c e s See your -10 E q u i p m e n t C o n d i t i o n Engine stopped (see your -10) Carrier blocked (see your -10) IR/BO select on BO (see your -10) NOTE M548A1 and M548A3 troubleshooting procedures are the same. M548A1 procedure is shown. T 1. Operate exterior lights in all positions (see your -10). 2. Do any exterior lights operate in any light switch positions? YES NO TN 1. Go to no exterior lights operate (WP 0034 00). Y 1. Remove main harness plug (1) from BO DRIVE light jack (2). 2. Measure resistance between BO DRIVE light jack (2) and ground. 3. Does multimeter read less than infinity? YES NO YN 1. Install main harness plug on BO DRIVE light. 2. Replace blackout headlight lamp unit (WP 0275 00). 3. Verify no faults found. 2Y 1. Check and see if multimeter read more than 0 ohms. 2. Does multimeter read more than 0 ohms? YES NO 2YN 1. Replace blackout headlight (WP 0275 00). 2. Verify no faults found. 0035 00-1