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 156 of 524
TB 9-2320-279-13-1
0014-6
AC COMPRESSOR DOES NOT SHUT OFF OR CYCLES CONSTANTLY - Continued
DRAFT
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KNOWN INFO
AC heater/evaporator blower operates.
AC compressor operates.
AC condenser core not blocked or damaged.
AC compressor belts OK.
AC condenser motor solenoid OK.
AC condenser motor red wire OK.
AC condenser motor ground wire OK.
AC condenser motor OK.
AC condenser assembly harness black wire
OK.
AC harness wire 1155 OK.
AC harness wire 1156 OK.
AC condenser assembly harness green wire
OK.
AC condenser motor solenoid ground wire
OK.
POSSIBLE PROBLEMS
AC temperature control switch temperature
probe damaged or installed incorrectly.
4.
Is temperature control switch
temperature probe free from
damage and installed
correctly in AC heater
evaporator core?
NO
YES
Read WARNING on
page 0014-7.
WARNING
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TEST OPTIONS
Visual inspection.
REASON FOR QUESTION
If temperature control switch
temperature probe is
damaged or installed
incorrectly, AC system will
not operate properly.
If temperature control
switch temperature probe
is damaged, replace
temperature control switch
(WP 0044).
Verify repair,
go to Step 14 of this fault.
If temperature control
switch temperature probe
is installed incorrectly,
reinstall temperature
control switch temperature
probe (WP 0044).
Verify
repair, go to Step 14 of this
fault.
Go to work package 0015 (AC
Does Not Cool Or Cools
Inadequately).
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KNOWN INFO
AC heater/evaporator blower operates.
AC compressor operates.
AC condenser core not blocked or damaged.
AC compressor belts OK.
AC temperature control switch temperature
probe OK.
POSSIBLE PROBLEMS
AC condenser motor solenoid faulty.
AC condenser motor red wire faulty.
AC condenser motor ground wire faulty.
AC condenser motor faulty.
AC condenser assembly harness black wire
faulty.
AC harness wire 1155 faulty.
AC harness wire 1156 faulty.
AC condenser assembly harness green wire
faulty.
AC condenser motor solenoid ground wire
faulty.
5.
Is AC condenser motor
solenoid energized when
engine start switch is turned
on, when fan control switch is
set to an on position and AC
temperature control switch is
set to the coldest temperature
position?
Go to Step 11 of this
fault.
NO
YES
Read WARNING on
page 0014-7.
WARNING
TEST OPTIONS
Audible test.
REASON FOR QUESTION
To isolate system fault.
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