TM 5-3805-294-23-1
0064
Table 1. DTC 647.31 - Fan Manual Reverse Mode Input Active Too Long - Continued.
Test or Inspection
Corrective Action
Malfunction
2.
Disconnect the following:
a. Disconnect connector
X3. (Volume 5, WP 0800,
Figure 84)
b. Disconnect connector
X4. (Volume 5, WP 0800,
Figure 85)
c. Disconnect connector
X41. (Volume 5,
WP 0800, Figure 102)
d. Disconnect connector
X42. (Volume 5,
WP 0800, Figure 103)
3.
Unmount and reposition cab
wiring harness connectors for
service. (Volume 3, WP 0312)
4.
Visually inspect connector X4
1.
If damaged or has loose
for damage and loose sockets/
sockets/pins, replace cab
pins.
wiring harness for socket side
of connector (Volume 4,
WP 0504) or replace machine
wiring harness for pin side of
connector. (Volume 4,
WP 0516) Restore machine to
original condition. Clear and
refresh DTCs. (Volume 3,
WP 0362)
2.
If not damaged and does not
have loose sockets/pins,
proceed to Malfunction 14.
Measure resistance (Volume
1.
If continuity is present between
14.
Short Circuit
any pins, replace machine
Between Connector
3, WP 0369) between
wiring harness. (Volume 4,
X4 Pin 21 and All
connector X4 pin 21 and all
Other Pins on
other pins on connector X4.
WP 0516) Restore machine to
Connector X4.
original condition. Clear and
(Volume 5, WP 0800, Figure
refresh DTCs. (Volume 3,
85) Note readings.
WP 0362)
2.
If continuity is not present
between any pins, proceed to
Malfunction 15.
0064-6