TM
9-2320-363-20-1
Table 3-1.
Troubleshooting
(Cont)
Malfunction
Test or Inspection
Corrective Action
ELECTRICAL
SYSTEM (CONT)
Standard
Heater Circuits
1.
HEATER
FAN DOES
NOT
OPERATE
IN ANY
SPEED.
Step
1.
Check
Step 2.
Check
heater
fan 30A fuse.
.
If defective,
replace
start/auxiliary
15A fuse.
.
If defective,
replace
30A fuse (page 4-204).
15A fuse (page 4-204).
Step 3.
Remove
heater
fan 30A
fuse. Check
for +12 VDC
at lead 14 fuse
connector.
.
If +12
VDC
is present,
go to step 4.
If no voltage
is present,
repair
lead
14
to
12-volt
constant
power
bus (page
3-2).
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