TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
37. ALL EMERGENCY FLASHERS DO NOT WORK - CONTINUED.
WARNING
Although KEY SWITCH must be on and battery ground cable connected to test
electrical circuit voltage, turn off KEY SWITCH and disconnect battery ground
cable before doing resistance tests or replacing parts. This will keep you from
getting shocked and prevent damage to parts and equipment.
NOTE
Scrape painted surfaces to bare metal before connecting test leads to ensure
correct multimeter readings.
Step 5. Pull wire connector (1) off of turn signal and hazard flasher (2). Using multimeter,
set to 20 vdc scale. Connect red test lead to wire terminal (3) on wire connector
connector (1) and black test lead to ground. Check for 11 to 13 vdc on multimeter.
Disconnect test leads.
a. If multimeter does not read 11 to 13 vdc, 55A wire (4) must be
replaced. Notify Direct Support Maintenance.
b. If multimeter reads 11 to 13 vdc, go to step 6.
Step 6. Test turn signal warning flasher (2) as follows: Using multimeter, set to ohms
scale and adjust to 0 ohms. Connect red test lead to terminal (5) and black test
lead to terminal (6). Check for 0 ohms on multimeter. Disconnect test leads.
a. If multimeter reads no continuity, replace turn signal and hazard
flasher (2) (page 2-664).
b. If multimeter reads 0 ohms, push wire connector (1) onto turn signal
and hazard flasher (2) and go to step 7.
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