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Page Title:
ARCTIC HEATER DOES NOT OPERATE CORRECTLY - continued |
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 TM 10-3930-673-20-1
27. ARCTIC HEATER DOES NOT OPERATE CORRECTLY (CONT).
TEST OPTIONS
KNOWN INFO
8
Multimeter.
Ground is OK.
Is there power to the fuel
REASON FOR QUESTION
POSSIBLE PROBLEMS
pump?
If the harness is damaged, the
Damaged heater harness.
heater will not operate.
(1) Place battery disconnect switch
in OFF position.
(2) Connect the cannon plug to
arctic heater assembly.
(3) Disconnect 2-pin connector
from arctic heater fuel pump.
(4) Place battery disconnect switch
in ON position.
(5) Using multimeter, measure
voltage between 2-pin
connector pin 1 harness side
(Green wire) and ground.
Is there battery voltage present?
STEP 10
YES
NO
KNOWN INFO
TEST OPTIONS
9
No power to fuel pump.
Multimeter.
Is there continuity in Green
POSSIBLE PROBLEMS
REASON FOR QUESTION
wire to fuel pump?
Damaged harness or heater
If the harness is damaged, the
(1) Place battery disconnect switch in
assembly.
heater will not operate.
OFF position.
(2) Disconnect cannon plug from
arctic heater assembly.
(3) Using multimeter, measure
resistance between 2-pin
connector pin 1 harness side
(green wire) and cannon plug pin
a harness side (green wire).
Is there continuity present?
Replace arctic
heater assembly
NO
wiring harness
(Para 20-4).
YES
Replace arctic
heater assembly
(Para 20-2).
2-770.4
Change 1
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