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 137 of 524

TB 9-2320-279-13-1

0012-51

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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HEMAC167

CONTINUITY TEST

(1) Set multimeter switch to ohms.

(2) Place positive (+) probe of multimeter on wire 1156

at fan control switch, terminal C.

(3) Place negative (-) probe of multimeter on wire 1156

at temperature control switch input terminal.

(a) If there is no continuity, repair wire 1156 (see

Appendix A) or replace wire 1156 (WP 0048).

Verify repair, go to Step 27 of this fault.

(b) If there is continuity, go to Step 26 of this fault.