TB-9-2320-279-13-1

TECHNICAL BULLETIN; AIR CONDITIONING SYSTEM

OPERATOR’S, UNIT AND DIRECT SUPPORT MAINTENANCE MANUAL, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LISTS

DECEMBER 2005

  TB-9-2320-279-13-1 - Page 111 of 524

TB 9-2320-279-13-1
0012-25
AC HEATER/EVAPORATOR BLOWER OPERATES BUT NO COLD AIR FROM
DUCTS DURING AC OPERATIONS - Continued
DRAFT
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.
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HEMAC155
CONTINUITY TEST
(1) Disconnect AC harness wire 1154 from low
pressure switch connector (WP 0041).
(2) Set multimeter switch to ohms.
(3) Place positive (+) probe of multimeter on low
pressure switch wire 1158 connector.
(4) Place negative (-) probe of multimeter on low
pressure switch wire 1154 connector.
(a) If there is no continuity, connect AC harness low
pressure switch connectors and go to work
package 0015 (AC Does Not Cool Or Cools
Inadequately).
(b) If there is continuity, repair AC harness wire
1154 (see Appendix A) or replace AC wiring
harness (WP 0046).
Verify repair, go to Step 27
of this fault.


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