TM 5-3895-385-23-1
0187
Table 1. Left Screed Horn Keypad Fault Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
21. Main wiring harness has a short
1. Measure for continuity (WP
1. If continuity is present, replace
circuit.
0443, Vol 3) between main
main hydraulic manifold wiring
wiring harness W1 J2 Pin 20 and
harness (WP 0373, Vol 2).
all other pins on the main wiring
harness W1 J2 (WP 0451, Vol 3,
Figure 2).
2. If no continuity is present,
proceed to next test.
2. Measure for continuity (WP
1. If continuity is present, replace
0443, Vol 3) between main
main hydraulic manifold wiring
wiring harness W1 J2 Pin 21 and
harness (WP 0373, Vol 2).
all other pins on the main wiring
harness W1 J2 (WP 0451, Vol 3,
Figure 2).
2. If no continuity is present,
proceed to next test.
3. Measure for continuity (WP
1. If continuity is present, replace
0443, Vol 3) between main
main hydraulic manifold wiring
wiring harness W1 J2 Pin 22 and
harness (WP 0373, Vol 2).
all other pins on the main wiring
harness W1 J2 (WP 0451, Vol 3,
Figure 2).
2. If no continuity is present,
proceed to next malfunction.
22.Communication connector Y12
1. Measure for continuity (WP
1. If continuity is present, proceed
has an open circuit.
0443, Vol 3) between
to next test.
communication connector Y12
P1 Pin A and Y12 P2 Pin A (WP
0451, Vol 3, Figure 33).
2. If no continuity is present,
replace communication
connector Y12 (WP 0386, Vol 2).
2. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) between
to next test.
communication connector Y12
P1 Pin A and Y12 P3 Pin A (WP
0451, Vol 3, Figure 33).
2. If no continuity is present,
replace communication
connector Y12 (WP 0386, Vol 2).
0187-15
