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TM 9-2320-364-20-4
2-3052
1. ARCTIC KIT WATER PUMP DOES NOT OPERATE (CONT).
Arctic batteries OK.
Blackout stop lights operate
indicating CB20 is OK.
Wire 1435 OK.
Water pump OK.
Wire 1431 from connector
MC119 to CB20 OK.
Wire 1431 between relays R32
and arctic heater switch OK.
Relay R32 OK.
Arctic heater switch OK.
Wire 1644 OK.
Relay R33 grounded.
Relay R33 faulty.
Wire 1644 to water pump faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Voltage test.
STE/ICE-R #89.
If 22 to 28 vdc are not present,
water pump will not operate.
YES
NO
Replace relay R33
(Para 7-95).
Verify repair, go to
Step 11 of this Fault.
10.
Are 22 to 28 vdc measured on
wire 1644 at relay R33,
terminal 87?
Repair wire 1644 (see
schematic Fig 2-74)
or notify DS
Maintenance.
Verify repair, go to
Step 11 of this Fault.
WARNING
Arctic batteries OK.
Blackout stop lights operate
indicating CB20 is OK.
Wire 1435 OK.
Water pump OK.
Wire 1431 from connector
MC119 to CB20 OK.
Wire 1431 between relays R32
and arctic heater switch OK.
Relay R32 OK.
Arctic heater switch OK.
Wire 1644 OK.
Relay R33 grounded.
Relay R33 OK.
Wire 1644 to water pump OK.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Verify repair.
If water pump operates, fault
has been corrected.
YES
NO
Fault not corrected.
Notify DS
Maintenance.
11.
Does water pump operate?
Fault corrected.
Read WARNING
on Page 2-3053
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