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DRAFT
TB 9-2320-364-13&P-1
AC HEATER/EVAPORATOR BLOWER DOES NOT OPERATE - 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) Remove eight screws and heater compartment
access panel (TM 9-2320-364-20).
(2) Turn engine start switch ON (TM 9-2320-364-10).
(3) Place positive (+) probe of multimeter on wire 1082
at fan control switch.
(4) 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 wire 1082
(see Appendix A) or notify Supervisor. Verify
repair, go to Step 8 of this fault.
(b) If 22 to 28 vdc are measured, turn engine start
switch OFF and go to Step 3 of this fault.
CONTINUITY TEST
(1) Disconnect wire 1082 from fan control switch
(2) Turn fan control switch to high speed (fully
clockwise) position (WP 0004).
(3) Set multimeter switch to ohms.
(4) Place positive (+) probe of multimeter on fan control
switch at terminal wire 1082.
(5) Place negative (-) probe of multimeter on fan control
switch at terminal orange wire.
(a) If there is no continuity, replace fan control
switch (WP 0031). Verify repair, go to Step 8 of
this fault.
(b) If there is continuity, connect wire 1082 on fan
control switch and go to Step 4 of this fault.
PLSAC157

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