TM 5-3895-385-23-1
0156
Table 1. Crown Down Fault Troubleshooting Procedures -- Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Hydraulic solenoid malfunction.
1. Disconnect main manifold wiring
harness W10 J6 from power
crown down solenoid (WP 0451,
Vol 3, Figure 27).
2. Turn keyless engine switch to
the AUX position (TM 5-3895-
385-10), but do not start engine.
3. Press crown down key on
pedestal top (TM 5-3895-385-
10).
4. Measure voltage (WP 0443, Vol
1. If voltage reads a minimum of 22
3) between pin 1 and 2 on W10
Volts Direct Current (VDC),
J6 (WP 0451, Vol 3, Figure 27)
replace power crown hydraulic
while pressing crown down key
solenoid (WP 0312, Vol 2).
on pedestal top.
2. If voltage reads below 22 VDC,
turn keyless engine switch to the
OFF position (TM 5-3895-385-
10), and proceed to next test.
5. Disconnect main wiring harness
W1 J19 from main manifold
wiring harness W10 J5 (WP
0451, Vol 3, Figure 1).
6. Turn keyless engine switch to
the AUX position (TM 5-3895-
385-10), but do not start engine.
7. Press crown down key on
pedestal top (TM 5-3895-385-
10).
8. Measure voltage (WP 0443, Vol
1. If voltage reads a minimum of 22
3) from W1 J19 Pin 1 (WP 0451,
VDC, turn keyless engine switch
Vol 3, Figure 1) to a known good
to the OFF position (TM 5-3895-
ground while pressing crown
385-10), and replace main
down key on pedestal top.
manifold wiring harness (WP
0376, Vol 2).
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