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Page Title:
FAULT CODE 090, 093, 094 OR 097: CONTROL UNIT DEFECTIVE (INTERNAL FAULT, RAM ERROR, EPROM FAULT OR POWER FAILURE). (Cont) |
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 TM 9-2320-364-34-1
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry or tools contact positive electrical circuits, a
direct short may result. Damage to equipment, injury or death to personnel may occur.
NOTE
Refer to arctic heater (Model B) troubleshooting (TM 9-2320-364-20) for fault code retrieval device (FCRD)
S
operation.
If the fault code retrieval device (FCRD) is not installed, the arctic heater indicator light displays the diagnostic
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flash codes for the arctic heater. These flash codes are 8 seconds long and repeat after 8 seconds.
The fault code retrieval device (FCRD) displays the last 5 faults that occur. The latest fault displayed is either
S
AF or F1. If more than one fault code is displayed, troubleshoot the latest fault code first.
Perform Steps (4) and (5) only if fault code retrieval device (FCRD) is available.
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VISUAL INSPECTION
(1) Remove cover from arctic heater
(TM 9-2320-364-20).
(2) Replace arctic heater control unit
(Para 18-2.2).
(3) Ensure vehicle is returned to normal
operating condition.
(4) Install fault code retrieval device
(FCRD) on arctic heater unit harness
diagnostic connector.
(5) Press the D button on fault code
retrieval device (FCRD) to turn arctic
heater ON.
(6) Turn arctic heater ON
(TM 9-2320-364-10).
(7) Observe arctic heater indicator light or
fault code retrieval device (FCRD)
display, if installed. Note if arctic heater
indicator light flashes code shown.
(8) Observe arctic heater for proper
operation.
(9) Turn arctic heater switch OFF
(TM 9-2320-364-10) or press the
D button on the fault code retrieval
device (FCRD), if installed.
(10)If installed, remove fault code retrieval
device (FCRD).
(11) Install cover on arctic heater
(TM 9-2320-364-20).
(a) If arctic heater operates normally and
arctic heater indicator light is
illuminated (Fault 000 displayed
on FCRD), fault has been corrected.
(b) If arctic heater indicator light flashed
flash code shown (Fault code 043,
047 or 048 displayed on FCRD),
notify supervisor.
(c) If arctic heater indicator light flashed
different flash code (Fault code other
than code 090, 093, 094 or 097
displayed on FCRD), troubleshoot
arctic heater fault code displayed
(TM 9-2320-364-20).
2-7679
2-84
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