TB 9-2320-360-13&P-1
A/C COMPRESSOR DOES NOT SHUT OFF OR CYCLES CONSTANTLY - CONTINUED.
6.
KNOWN INFO
WARNING
Read WARNING on
A/C operates.
page 0019 00-9.
magnetic switch (R31) supply and
control circuit OK.
Is continuity measured
Air supply to engine fan control
OK.
across A/C engine fan control
TEST OPTIONS
A/C condenser not blocked with
solenoid circuit breaker?
Continuity test.
debris.
A/C high pressure switch not
REASON FOR QUESTION
shorted.
A/C thermostatic switch
If continuity is measured, A/C
temperature probe installed
engine control solenoid power
correctly.
circuit wiring is faulty. If not,
A/C thermostatic switch OK.
circuit breaker is faulty.
Replace A/C
A/C engine fan control solenoid
engine fan control
valve OK.
circuit breaker (WP
NO
A/C engine fan control solenoid
0024 00). Verify
black wire OK.
repair, go to Step
A/C engine fan control solenoid
10 of this fault.
OK.
YES
POSSIBLE PROBLEMS
Repair or replace A/C
engine control solenoid 12
A/C engine fan control solenoid
vdc power circuit wires (blue
circuit breaker faulty.
or yellow wires) (See WP
A/C engine fan control solenoid 12
0057 00, Fig j) or notify DS
vdc supply circuit wiring faulty.
Maintenance. Verify repair,
go to Step 10 of this fault.
7.
KNOWN INFO
TEST OPTIONS
WARNING
Read WARNING on
A/C operates.
Visual Inspection.
page 0019 00-9.
magnetic switch (R31) supply and
REASON FOR QUESTION
control circuit OK.
Is there no air pressure at A/C
If no air pressure is present, A/C
Air supply to engine fan control
engine fan control solenoid
engine fan control circuit is OK.
OK.
valve, when jumper is
A/C condenser not blocked with
removed from A/C
debris.
compressor receiver/dryer
A/C high pressure switch not
shorted.
harness A/C high pressure
A/C thermostatic switch
switch connector terminals?
temperature probe installed
correctly.
A/C thermostatic switch OK.
A/C engine fan control solenoid
Replace A/C engine fan
black wire OK.
control solenoid (WP 0026
NO
A/C engine fan control solenoid
00). Verify repair, go to
OK.
Step 10 of this fault.
A/C engine fan solenoid circuit
breaker OK.
YES
A/C engine fan control solenoid
12 vdc supply circuit wiring OK.
POSSIBLE PROBLEMS
Notify DS
A/C engine fan control solenoid
Maintenance.
valve faulty.
0019 00-8