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Page Title:
ARCTIC HEATER DOES NOT OPERATE CORRECTLY - continued |
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 TM 10-3930-673-20-1
6
TEST OPTIONS
KNOWN INFO
Multimeter.
Exhaust is OK.
Is there power to heater
REASON FOR QUESTION
POSSIBLE PROBLEMS
assembly?
If the harness is damaged the
Heater wiring harness is damaged.
heater will not operate.
(1) Place battery disconnect switch
in OFF position.
(2) Disconnect cannon plug to
arctic heater assembly.
(3) Place battery disconnect switch
in ON position.
(4) Using multimeter, measure
voltage between cannon plug
pin H harness side (red wire)
and ground.
Is there battery voltage present?
Replace arctic
heater assembly
NO
wiring harness
(Para 20-4).
YES
KNOWN INFO
TEST OPTIONS
7
Heater is getting power.
Multimeter.
Is the arctic heater assembly
POSSIBLE PROBLEMS
REASON FOR QUESTION
ground wire okay?
Open ground.
If the ground is open the heater will
not operate.
Using a multimeter, measure
resistance between cannon plug pin
1 harness side (brown wire) and
ground.
Is there battery voltage present?
TR01476
Replace arctic
heater assembly
NO
wiring harness
(Para 20-4).
YES
2-770.3
Change 1
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