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.
(1) Disconnect A/C binary switch
connector from A/C binary switch.
(2) Turn engine switch to ON position
(3) Turn A/C control switch to ON (low,
medium, or high blower speed) position
on A/C compressor receiver/dryer
harness brown wire at A/C binary
(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
(b) If 22 to 28 vdc is measured, turn
engine switch to OFF position and
go to Step 9 of this fault.
dryer harness red wire from A/C
compressor clutch harness.
wire from A/C binary switch connector
compressor receiver/dryer harness
Verify repair, go to Step 13 of this
(b) If there is continuity, connect A/C
binary switch connector, connect
harness, and notify DS