TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
40. ONE FRONT EMERGENCY FLASHER DOES 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.
Steps 6 thru 11 are typical for left and right front emergency flashers.
Step 6. Test turn signal lamp (1) as follows: Using number one cross-tip screwdriver,
unscrew and take off eight screws (2). Take out amber lens (3) and red lens
(4). Push turn signal lamp (1) down and turn counterclockwise and release.
Take out turn signal lamp (1). Using multimeter, set to ohms scale and adjust to
O ohms. Connect red test lead to contact (5) and black test lead to metal base
(6). Check for 0 ohms on multimeter. Disconnect test leads.
a. If multimeter reads no continuity, replace turn signal lamp (1)
(page 2-664).
b. If multimeter reads 0 ohms, go to step 7.
Step 7. Using multimeter, set to ohms scale and adjust to 0 ohms. Connect red test lead
to lamp socket (7) and black test lead to wire terminal (8). Check for 0 ohms on
multimeter. Disconnect test leads.
a. If multimeter reads no continuity, replace front turn signal
assembly (9) (page 2-664).
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