TM 5-3895-385-23-1
0187
Table 1. Left Screed Horn Keypad Fault Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) across screed
to next test.
keypads fuse (WP 0447, Vol 3,
Figure 1).
2. If no continuity is present,
replace screed keypads fuse
(WP 0277, Vol 2).
3. Disconnect left side lower
controls wiring harness W14 J1
from horn keypad (WP 0451, Vol
3, Figure 33).
4. Turn keyless engine switch to
the AUX position (TM 5-3895-
385-10), but do not start engine.
5. Measure voltage (WP 0443, Vol
1. If voltage reads a minimum of 10
3) from W14 J1 Pin 2 to W14 J1
Volts Direct Current (VDC),
Pin 3 (WP 0451, Vol 3, Figure
proceed to next test.
33).
2. If voltage reads below 10 VDC,
proceed to next malfunction.
6. Measure voltage (WP 0443, Vol
1. If voltage reads a minimum of 10
3) from W14 J1 Pin 2 to W14 J1
VDC, turn keyless engine switch
Pin 6 (WP 0451, Vol 3, Figure
to the OFF position (TM 5-3895-
33).
385-10), and proceed to
malfunction 5.
2. If voltage reads below 10 VDC,
turn keyless engine switch to the
OFF position (TM 5-3895-385-
10), and proceed to next test.
7. Disconnect screed wiring
harness W6 J1 from left side
lower controls wiring harness
W14 J5 (WP 0451, Vol 3, Figure
20).
8. Turn keyless engine switch to
the AUX position (TM 5-3895-
385-10), but do not start engine.
0187-3
