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TM 9-2320-360-20-1
WARNING
Jewelry can catch on equipment
and cause injury or short across
electrical circuit and cause
severe burns or electrical shock.
Remove rings, bracelets,
watches, necklaces, and any
other jewelry before working
around HET Tractor.
HORN RELAY TEST
(1)
Turn ENGINE switch to ON
position.
(2)
Place positive (+) probe of
multimeter on wire no. 1016
at HORN relay.
(3)
Place negative (-) probe of
multimeter on ground.
(4)
Press horn button and look
for 10-14 volts on multimeter.
(5)
Turn ENGINE switch to OFF
position.
WIRE NO. 1016 VOLTAGE TEST
(1)
Turn ENGINE switch to ON
position.
(2)
Place positive (+) probe of
multimeter on wire no. 1016
at horn button.
(3)
Place negative (-) probe of
multimeter on ground.
(4)
Press horn button and look for
10-14 volts on multimeter.
(5)
Turn ENGINE switch to OFF
position.
CONTINUITY TEST
CAUTION
Electrical power must be disconnected from
circuit before continuity can be checked.
Failure to comply may result in damage to
test equipment or electrical system.
Check ground wire no. 1435 from horn button
for loose connections or damage.
(1)
Disconnect wiring from components at each end of wire.
(2)
Set multimeter to ohms position.
NOTE
A reading of infinity indicates an open circuit.
(3)
Connect multimeter leads to each end of wire and check
multimeter for continuity.
NOTE
Any reading besides infinity indicates a
grounded wire.
(4)
Remove multimeter lead from one end of wire and
connect to chassis ground.
Change 1 2-493
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