TM 9-2350-277-20-1
HORN DOES NOT WORK
0037 00
INITIAL SETUP:
Maintenance Level
Unit
Tools and Special Tools
General mechanic’s tool kit: automotive
(WP 0926 00, Item 65)
Multimeter (WP 0926 00, Item 30)
Jumper wire
Personnel Required
Unit Mech 63T10
Helper (H)
References
See your -10
Equipment Condition
Engine stopped (see your -10)
Vehicle blocked (see your -10)
Trim vane removed (see your -10)
Power plant access panels removed (see your -10)
T
1. Remove lead 10863474 plug (1) from horn jack (2).
2. Measure resistance between lead 10863474 plug (1) and ground.
3. Does multimeter read 0 ohms?
YES
NO
TN
1. Replace lead 10863474 and/or
connector (WP 0382 00).
2. Verify no faults found.
Y
1. Remove harness 8763491 circuit 25 plug (1) from horn jack (2).
2. Move MASTER POWER switch to ON.
3. Measure voltage between harness 8763491 circuit 25 plug (1) and
ground with horn button depressed.
4. Does multimeter read less than 17 volts?
YES
NO
YN
1. Replace horn (WP 0336 00).
2. Verify no faults found.
0037 00-1
