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 139 of 524

TB 9-2320-279-13-1
0012-53
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.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
HEMAC168
CONTINUITY TEST
(1) Set multimeter switch to ohms.
(2) Turn AC temperature control switch to the coldest
position (fully clockwise) (WP 0004).
(3) Place positive (+) probe of multimeter on
temperature control switch, input terminal.
(4) Place negative (-) probe of multimeter on
temperature control switch, output terminal.
(a) If there is no continuity, replace temperature
control switch (WP 0044).
Verify repair, go to
Step 27 of this fault.
(b) If there is continuity, repair AC harness wire
1156 (see Appendix A) or replace AC wiring
harness (WP 0046).
Verify repair, go to Step 27
of this fault.


Back to Top