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 8. Test turn signal switch (1) as follows: Pull apart wire connectors (2 and 3). Pull
emergency flasher switch handle (4) out to on position. Using multimeter, set to
ohms scale and adjust to 0 ohms. Connect red test lead to wire terminal (5) and
black test lead to wire terminal (6). Check for 0 ohms on multimeter. Move black
test lead to wire terminal (7). Check for 0 ohms on multimeter. Push turn signal
switch handle (8) towards left turn position to release emergency flasher switch
handle (4). Push turn signal switch handle (8) to off position. Disconnect test
leads.
a. If multimeter reads no continuity on wire terminals (6) or (7),
replace turn signal switch (1) (page 2-664).
b. If multimeter reads O ohms on wire terminals (6 and 7), go to step 9.
Step 9. Test turn signal switch (1) continued: Pull emergency flasher switch handle (4)
out to on position. Using multimeter set to ohms scale and adjust to 0 ohms.
Connect red test lead to wire terminal (5) and black test lead to wire terminal
(9). Check for 0 ohms on multimeter.
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