TM 5-3805-294-23-1
FIELD MAINTENANCE
DTC 647.31 - FAN MANUAL REVERSE MODE INPUT ACTIVE TOO LONG
INITIAL SETUP:
References (cont.)
Tools and Special Tools
Tool Kit, General Mechanic's: Automotive
Volume 3, WP 0362
(Volume 5, WP 0796, Table 2, Item 119)
Volume 3, WP 0369
Accessory Kit, MSD Electronic Equipment
Volume 4, WP 0504
(Volume 5, WP 0796, Table 2, Item 2)
Volume 4, WP 0508
Multimeter, Digital
Volume 4, WP 0509
(Volume 5, WP 0796, Table 2, Item 77)
Volume 4, WP 0511
Probe Set, Standard
Volume 4, WP 0516
(Volume 5, WP 0796, Table 2, Item 91)
Volume 4, WP 0523
Test Set, MSD Electronic Systems
Volume 4, WP 0589
(Volume 5, WP 0796, Table 2, Item 116)
Volume 4, WP 0593
Volume 5, WP 0800
Personnel Required
Construction Equipment Repairer 91L (2)
Equipment Condition
Machine safely parked and shut down
(TM 5-3805-294-10). (Volume 5, WP 0794)
References
Test Equipment Setup for MSD and Service
TM 5-3805-294-10 (Volume 5, WP 0794)
ADVISOR. (Volume 3, WP 0375)
Volume 3, WP 0312
TROUBLESHOOTING PROCEDURE
Table 1. DTC 647.31 - Fan Manual Reverse Mode Input Active Too Long.
Malfunction
Test or Inspection
Corrective Action
1.
Verify key switch is in OFF
1.
Check For DTC
position (TM 5-3805-294-10).
647.31 Active
Status Change With
(Volume 5, WP 0794)
F6 OPT. 2 (ALT) 10A
Fuse Removed.
2.
Remove F6 OPT. 2 (ALT) 10A
fuse (TM 5-3805-294-10).
(Volume 5, WP 0794)
3.
Turn key switch to ON position,
but DO NOT START ENGINE
(TM 5-3805-294-10). (Volume
5, WP 0794)
4.
Refresh DTCs. Note if DTC
647.31 is an active DTC or if
DTC 647.31 moved to stored.
(Volume 3, WP 0362)
0064-1