TM 5-3805-254-20-1
ORGANIZATIONAL TROUBLESHOOTING - CONTINUED
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
40. ONE FRONT EMERGENCY FLASHER DOES NOT WORK.
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 1 thru 5 are for left front emergency flasher.
Steps 6 thru 11 are typical for both left and right front emergency flashers.
Steps 12 thru 16 are for right front emergency flasher.
Step 1. Pull wire connector (1) off of front turn signal assembly (2). Using multimeter
set to 20 vdc scale. Connect red test lead to wire terminal (3) on wire connector
(1) and black test lead to ground. Have assistant pull emergency flasher switch
handle (4) out to on position. Check for 11 to 13 vdc on multimeter. Have
assistant push turn signal switch handle (5) towards left turn position to release
emergency flasher switch handle (4). Have assistant push turn signal switch
handle (5) to off position. Disconnect test leads.
a. If multimeter does not read 11 to 13 vdc, go to step 2.
b. If multimeter reads 11 to 13 vdc, go to step 6.
Step 2. Unscrew and take off two wing nuts (6) and junction box cover (7). Using
multimeter, set to 20 vdc scale. Connect red test lead to wire terminal (8) on
junction box (9) and black test lead to ground. Have assistant pull emergency
flasher switch handle (4) out to on position. Check for 11 to 13 vdc on
multimeter. Have assistant push turn signal switch handle (5) towards left turn
position, to release emergency flasher switch handle (4). Have assistant push
turn signal switch handle (5) to off position. Disconnect test leads.
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