TM 9-2350-277-20-1
HORN DOES NOT WORK—Continued
0037 00
4Y
1. Install jumper wire between horn switch plug (1), circuit 25 pin
(2) and ground.
2. Measure resistance between harness 12349881 jack (3), pin A (4)
and ground.
3. Does multimeter read 0 ohms?
YES
NO
4YN
1. Remove jumper wire from horn
switch plug.
2. Faulty harness 12349881 circuit 25A.
Beyond unit maintenance repair.
3. Notify supervisor.
5Y
1. Remove jumper wire from horn switch plug.
2. Remove instrument panel for access (WP 0295 00).
3. Remove harness 12349881 circuit 25A plug (1) from cable
assembly 12349858 circuit 25A jack (2).
4. Install jumper wire between 12349858 jack, circuit 25A pin (2)
and ground.
5. Measure resistance between horn switch plug (3), circuit 25A pin
(4) and ground.
6. Does multimeter read 0 ohms?
YES
NO
5YN
1. Remove jumper wire from harness
12349858 circuit 25A.
2. Faulty harness 12349881 circuit 25A.
Beyond unit maintenance repair.
3. Notify supervisor.
0037 00-3
