TM 5-3805-294-23-1
0129
Control Unit Response
The engine may not start or may require extended crank times in cold weather if glow plugs do not preheat the
combustion chamber.
TROUBLESHOOTING PROCEDURE
Table 1. Glow Plug Check.
Test or Inspection
Corrective Action
Malfunction
Were you referred to this
1.
If you were referred to this
1.
DTC Referral.
procedure while performing
procedure, proceed to
the procedures for a DTC?
Malfunction 3.
2.
If you were not referred to this
procedure, proceed to
Malfunction 2.
1.
Turn key switch to ON position,
2.
Check For Active
but DO NOT START ENGINE
DTCs.
(TM 5-3805-294-10). (Volume
5, WP 0794)
2.
Read DTCs. (Volume 3,
WP 0362) Note all active
DTCs.
3.
Turn key switch to OFF
1.
If any DTCs are active,
position (TM 5-3805-294-10).
discontinue this
troubleshooting procedure and
(Volume 5, WP 0794)
perform procedure for active
DTCs. Resolve all DTCs
before continuing this
procedure.
2.
If no active DTCs are present,
proceed to Malfunction 3.
Measure resistance (Volume
1.
If continuity is not present,
3.
F63 Glow Plug Fuse
replace F63 glow plug fuse.
Blown.
3, WP 0369) between glow
plug terminals. (Volume 5,
(Volume 4, WP 0512) Restore
machine to original condition.
WP 0800, Figure 173) Note
reading.
If continuity is present,
2.
proceed to Malfunction 4.
1.
Turn key switch to ON position,
4.
Engine Preheat
but DO NOT START ENGINE
Circuit Check.
(TM 5-3805-294-10). (Volume
5, WP 0794)
0129-2