TB 9-2320-360-13&P-1
WARN I N G
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.
VOLTAGE TEST
(1) Disconnect A/C binary switch
connector from A/C binary switch.
(2) Turn engine switch to ON position
(TM 9-2320-360-10).
(3) Turn A/C control switch to ON (low,
medium, or high blower speed) position
(WP 0008 00).
(4) Place positive (+) probe of multimeter
on A/C compressor receiver/dryer
harness brown wire at A/C binary
switch connector.
(5) Place negative (-) probe of multimeter
on ground.
(a) If 22 or 28 vdc is not measured,
turn engine switch to OFF position,
connect A/C binary switch
connector, and go to Step 10 of
this fault.
(b) If 22 to 28 vdc is measured, turn
engine switch to OFF position and
go to Step 9 of this fault.
CONTINUITY TEST
(1) Disconnect A/C compressor receiver/
dryer harness red wire from A/C
compressor clutch harness.
(2) Is there continuity measured on red
wire from A/C binary switch connector
to A/C compressor clutch connector?
(a) If there is no continuity, repair A/C
compressor receiver/dryer harness
red wire (See WP 0057 00, Fig j).
Verify repair, go to Step 13 of this
fault.
(b) If there is continuity, connect A/C
binary switch connector, connect
red wire to A/C compressor clutch
harness, and notify DS
Maintenance.
HETF00448
0017 00-11
