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.
A/C circuit breaker, A/C relay, and 24 vdc magnetic switch (R22) are always electrically hot and can
cause severe injury to personnel. Care must be exercised when working around these components.
VOLTAGE TEST
(1) Remove two screws and doghouse
(2) Disconnect A/C switch harness
evaporator connector.
(3) Turn engine switch to ON position
(TM 9-2320-360-10).
(4) Turn A/C control switch to high blower
speed (clockwise) position
on orange wire at A/C switch harness
connector.
on ground.
(a) If 22 to 28 vdc are not measured,
turn engine switch to OFF position
and go to Step 13 of this fault.
(b) If 22 to 28 vdc are measured, turn
engine switch to OFF position and
repair, go to Step 18 of this fault.
CONTINUITY TEST
(1) Disconnect A/C switch harness
connector from A/C control switch.
(2) Set A/C control switch to high blower
speed (clockwise) position
C control switch high blower speed
contacts?
Verify repair, go to Step 18 of this
fault.
(b) If there is continuity, repair A/C
switch harness orange wire (See
HETF00222
go to Step 18 of this fault.
0016 00-15