TM 5-3895-385-23-1
0204
Table 1. Spray Pump Fault Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. Measure voltage (WP 0443, Vol
1. If voltage reads a minimum of
3) from known good ground to
4.5 Volts Direct Current (VDC),
relay connection point 30 (WP
turn keyless engine switch to
0447, Vol 3, Figure 4) on spray
the OFF position (TM 5-3895-
pump relay (WP 0447, Vol 3,
385-10), and replace spraydown
Figure 3).
pump relay (WP 0277, Vol 2).
2. If voltage reads below 4.5 VDC,
turn keyless engine switch to
the OFF position (TM 5-3895-
385-10), and proceed to next
malfunction.
3. Output module (Electronic
1. Disconnect main wiring harness
Control Module (ECM)) has
W1 J3 from output module ECM
damage or loose pin.
(WP 0451, Vol 3, Figure 1).
2. Check output module ECM for
1. If output module ECM has
damage or loose pin.
damage or loose pin, replace
output module ECM (WP 0399,
Vol 2).
2. If no damage is found, proceed
to next malfunction.
4. Main wiring harness has
Check main wiring harness W1 J3
1. If main wiring harness has
damage or loose pin.
for damage or loose pin (WP 0451,
damage or loose pin, repair or
Vol 3, Figure 1).
replace main wiring harness
(WP 0373, Vol 2).
2. If no damage is found, proceed
to next malfunction.
5. Main wiring harness has an
1. Disconnect W1 J4 from wiring
open circuit.
harness (WP 0451, Vol 3, Figure
3).
2. Measure for continuity (WP
1. If continuity is present, proceed
0443, Vol 3) between main
to next malfunction.
wiring harness W1 J3 Pin 7 and
main wiring harness W1 J4 Pin
19 (WP 0451, Vol 3, Figure 1
and 3).
2. If no continuity is present,
replace main wiring harness
(WP 0373, Vol 2).
0204-2
