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.