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TM 9-2320-364-20-4
2-3045
(1) Remove eight screws and heater
compartment panel.
(2) Remove four screws and pull heater
control cover out enough to access
water pump relays.
(3) Connect positive (+) multimeter lead
to relay R32 terminal, terminal 87A.
(4) Connect negative (–) multimeter lead
to a known good ground.
(a) If 22 to 28 vdc are not present,
repair wire 1431 (see schematic
Fig 2-74) or notify DS
Maintenance.
(b) If 22 to 28 vdc are present, wire
1431 is OK. Go to Step 4 of
this Fault.
VOLTAGE TEST
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.
Relay test must be performed with relay
partially removed.
NOTE
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