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