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AC COMPRESSOR DOES NOT SHUT OFF OR CYCLES CONSTANTLY - Continued
AC COMPRESSOR DOES NOT SHUT OFF OR CYCLES CONSTANTLY - Continued

Air Conditioning System Nsn 4120-01-526-9158 P/N 3528349 For Truck, Tractor M1074/M1075 Palletized Load System Page Navigation
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DRAFT
TB 9-2320-364-13&P-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 9-2320-364-34).
(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 repair AC condenser
assembly harness black wire (see Appendix A).
Verify repair, go to Step 15 of this fault.
(b) If 22 to 28 vdc are measured, go to Step 10 of
this fault.
VOLTAGE TEST
(1) Turn fan control switch to an on position (low,
medium, or high) (WP 0004).
(2) Turn temperature control switch to the coldest
position (fully clockwise) (WP 0004).
(3) If OFF, turn engine start switch ON
(TM 9-2320-364-10).
(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.
PLSAC176
(a) If 22 to 28 vdc are not measured, turn engine
start switch OFF and replace AC condenser
motor solenoid (WP 0026). Verify repair, go to
Step 15 of this fault.
(b) If 22 to 28 vdc are measured, turn engine start
switch OFF, and go to Step 11 of this fault.
0014-13


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