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Page Title: AC COMPRESSOR DOES NOT SHUT OFF OR CYCLES CONSTANTLY - Continued
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DRAFT
TB 9-2320-279-13-1
AC COMPRESSOR DOES NOT SHUT OFF OR CYCLES CONSTANTLY - Continued
WARNING
Remove rings, bracelets, wristwatches, neck chains, and any other jewelry before working around
vehicle. Jewelry can catch on equipment and cause serious injury. Jewelry or tools may short
across electrical circuits or terminals and cause damage to equipment or severe burns or
electrical shock to personnel.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
VOLTAGE TEST
(1) If OFF, turn engine start switch ON
(TM 9-2320-279-10).
(2) Place positive (+) probe of multimeter on AC
condenser assembly harness black wire at AC
condenser motor solenoid terminal.
(3) Place negative (-) probe of multimeter on a known
good ground.
(a) If 22 to 28 vdc are not measured, turn engine
start switch OFF and go to Step 10 of this fault.
(b) If 22 to 28 vdc are measured, go to Step 7 of
this fault.
VOLTAGE TEST
(1) Turn fan control switch to an on position (low,
medium, or high) (WP 0004).
(2) Turn AC temperature control switch to the coldest
position (fully clockwise) (WP 0004).
(3) Turn engine start switch ON (TM 9-2320-279-10).
(4) Place positive (+) probe of multimeter on AC
condenser motor solenoid, terminal red wire.
(5) Place negative (-) probe of multimeter on a known
good ground.
(a) If 22 to 28 vdc are not measured, turn engine
start switch OFF and replace AC condenser
HEMAC172
motor solenoid (WP 0027). Verify repair, go to
Step 14 of this fault.
(b) If 22 to 28 vdc are measured, turn engine start
switch OFF and go to Step 8 of this fault.

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