TM 5-3895-385-23-1
0161
Table 1. Horn Fails To Sound Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
3. Light horn wiring harness
1. Attempt to turn on worklights
1. If worklights operate, turn
malfunction.
using left control pedestal
keyless engine switch to the
worklights rocker switch (TM 5-
OFF position (TM 5-3895-385-
3895-385-10).
10), and proceed to next test.
2. If worklights do not operate, turn
keyless engine switch to the
OFF position (TM 5-3895-385-
10), and proceed to next
malfunction.
2. Turn keyless engine switch to
the AUX position (TM 5-3895-
385-10), but do not start engine.
3. Press and hold horn button on
left control pedestal (TM 5-3895-
385-10).
4. Measure voltage (WP 0443, Vol
1. If voltage reads below 22 Volts
3) from known good ground to
Direct Current (VDC), turn
W19 J2 on light horn wiring
keyless engine switch to the
harness (WP 0451, Vol 3, Figure
OFF position (TM 5-3895-385-
39).
10), and replace light horn
wiring harness (WP 0394, Vol
2).
2. If voltage reads a minimum of 22
VDC, proceed to next test.
5. Measure voltage (WP 0443, Vol
1. If voltage reads below 22 VDC,
3) from known good ground to
turn keyless engine switch to
W19 J3 on light horn wiring
the OFF position (TM 5-3895-
harness (WP 0451, Vol 3, Figure
385-10), and replace left control
39).
pedestal horn button (WP 0269,
Vol 2).
2. If voltage reads a minimum of 22
VDC, turn keyless engine switch
to the OFF position (TM 5-3895-
385-10), and replace light horn
wiring harness (WP 0394, Vol
2).
4. Fuse blown.
1. Remove fuse on light horn wiring
harness (WP 0451, Vol 3, Figure
39).
0161-3