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.
Measure resistance (Volume
1.
If continuity is present, replace
reversing fan switch. (Volume
3, WP 0369) between pins 8
and 9 on reversing fan switch.
4, WP 0523) Restore machine
to original condition. Clear and
(Volume 5, WP 0800, Figure
refresh DTCs. (Volume 3,
64) Note reading.
WP 0362)
2.
If continuity is not present,
proceed to Malfunction 5.
1.
Disconnect connector S16.
5.
Connector S16 Has
Damage or Loose
(Volume 5, WP 0800, Figure
Sockets/Pins.
64)
2.
Visually inspect connector S16
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 reversing
fan switch wiring harness for
pin side of connector. (Volume
4, WP 0523) 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 6.
Measure resistance (Volume
1.
If continuity is present, replace
6.
Short Circuit
reversing fan switch wiring
Between Pins 1 and
3, WP 0369) between pins 1
harness. (Volume 4,
3 on Connector S16.
and 3 on connector S16.
WP 0523) Restore machine to
(Volume 5, WP 0800, Figure
original condition. Clear and
64) Note reading.
refresh DTCs. (Volume 3,
WP 0362)
2.
If continuity is not present,
proceed to Malfunction 7.
Measure resistance (Volume
1.
If continuity is present, replace
7.
Short Circuit
cab wiring harness. (Volume 4,
Between Sockets 1
3, WP 0369) between sockets
and 3 on Connector
1 and 3 on connector S16.
WP 0504) Restore machine to
S16.
original condition. Clear and
(Volume 5, WP 0800, Figure
refresh DTCs. (Volume 3,
64) Note reading.
WP 0362)
If continuity is not present,
2.
proceed to Malfunction 8.
0064-3