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TM 10-3930-669-20
17. HEATER BLOWER DOES NOT OPERATE (CONT).
KNOWN INFO
24 vdc circuits operate.
Fuse 9 OK.
Wire 38 OK.
POSSIBLE PROBLEMS
Heater blower switch faulty.
Blower motor ground wire faulty.
Fan blower motor faulty.
KNOWN INFO
24 vdc circuits operate.
Fuse 9 OK.
Wire 38 OK.
Heater blower switch OK.
POSSIBLE PROBLEMS
Blower motor ground wire faulty.
Fan blower motor faulty.
TEST OPTIONS
Voltage test.
STE/ICE-R #89.
REASON FOR QUESTION
This question eliminates a
possible problem or group of
possible problems determining
where troubleshooting
continues.
TEST OPTIONS
Continuity test.
STE/ICE-R #91.
REASON FOR QUESTION
If continuity is not present,
blower switch is faulty.
2-220
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