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TM 9-2320-364-20-4
2-3044
1. ARCTIC KIT WATER PUMP DOES NOT OPERATE (CONT).
3.
Are 22 to 28 vdc measured on
wire 1431 at relay R32,
terminal 87A?
Repair wire 1431 (see
schematic Fig 2-74)
or notify DS
Maintenance.
Verify repair, go to
Step 11 of this Fault.
YES
NO
Arctic batteries OK.
Blackout stop lights operate
indicating CB20 is OK.
Wire 1435 OK.
Water pump OK.
Wire 1431 from connector
MC119 to CB20 faulty.
Wire 1431 between relays R32
and arctic heater switch faulty.
Relay R32 faulty.
Arctic heater switch faulty.
Wire 1644 faulty.
Relay R33 not 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,
wire 1431 is faulty.
WARNING
Read WARNING
on Page 2-3045
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