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Page Title:
CAB DEFROSTER FAN(S) DO NOT OPERATE - continued |
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 TM 10-3930-673-20-1
VOLTAGE TEST
(1) Set multimeter to volts dc.
(2) Connect multimeter positive (+) lead to
relay K1 where wire 1 connects.
(3) Connect multimeter negative () lead to
known good ground.
(4) Connect negative battery cable to
negative side of battery (Para 8-44).
(a) If 24 vdc is present, replace relay
K1 (Para 8-23).
(b) If 24 vdc is not present, go to
Step 7 of this fault.
(5) Disconnect negative battery cable
(Para 8-44).
WIRE 1
B CIRCUIT
REAKER
C
B6
VOLTAGE TEST
(1) Set multimeter to volts dc.
(2) Connect multimeter positive (+) lead to
circuit breaker CB6 where wire 1
connects.
(3) Connect multimeter negative () lead to
known good ground.
(4) Connect negative battery cable to
negative side of battery (Para 8-44).
(a) If 24 vdc is present, repair faulty
RELAY K1
wire 1 (Para 8-48).
(b) If 24 vdc is not present, go to
Step 8 of this fault.
(5) Disconnect negative battery cable
(Para 8-44).
WIRE 1
TR01090
2-93
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