The
following are the general instructions on the start of diagnosing any
electronically controlled engine or transmission problem. The
engine and the automatic transmission (transmission control is only
for automatics, engine is still computer controlled no matter the
transmission type) in this vehicle are computer controlled and in
most cases when a fault occurs a fault code is stored in the memory
of the computer control module. There are exception to this, such as
the Mass Airflow Meter and fuel pressure problems. What must be done
is to have all the basic testing done such as a scan of the system
for fault codes as well as a check with a live data scanner tool for
engine functions that are not within range of normal, a trained
technician is required to know what is correct and what isn't, then
based on careful diagnostics done from a factory repair manual the
correct part is replaced or the wiring repaired or the computer
replaced (known as the PCM), which is very rarely the problem. Other
basic checks must be done as well such as mechanical problems with
the engine as well as engine state of tune and mileage on the engine.
The transmission can have mechanical issues as well such as no gear
engagement at all or a failed pump or other pressure related
problems. Also engine mechanical problems ca cause many
drive-ability related problem such as rough idle and other symptoms
SOURCE: jeep liberty 2002 air conditioning
please elaborate, does your inside fan still works? does your compressor clutch kicks in?...would you know if you have refrigerant in your system? if you can trace the hose from the compressor to the evaporator, you can see a plastic cap normally blue with a big letter "L" at the top, then it is the low side fitting, you can remove the cap and get a pin and press the pin at the center( be carefull, refrigerant might be present). if there is none, then you have a leak. u lost all of your refrigerant that is why the ac did not work. if you do have a big burst of gas as you press it, then it is not a refrigerant problem,
a lot more to be tackle as you help me diagnose your problem.
tnx
drcool
pls rate me..
SOURCE: 2002 Jeep Liberty headlights blink
I have the same problem. I had it when I turned on my Blinker and turned. When the switch in the steering wheel turn the blinker off it made my head lights blink sometimes. It has to do with the switch that controls the blinker and the head lights. It does not happen all the time.
SOURCE: 2002 jeep liberty interior fuse diagram
1-20amp-pwr outlet frt. 2-10amp-rear fog lights(export only)
3-15 amp-horn 4-10amp-hedlt low beam rt
5-10amp-hedlt low beam lft 6-20amp-bodycontrolmodule/pwr dr locks 7-spare 8-spare 9-10amp- rt pk lt /rt tail lt/trailer tow lt/cluster
10-spare 11-15 amp-flasher 12-15 amp-stop lts
13-10amp-bodycontrolmodule/cmtc/cluster 14-spare
15-10amp-pdc fuel pmp & auto shutdownrelays/skis
16-20amp-pwr outlet rear 17-15amp-rear wiper 18-20amp-radio choke relay 19-20amp-frt fog lts/trailer tow stop and turn lts
20-20amp-sunroof 21-spare 22-10amp-wiperswitch/frt and rear washer 23-10amp-lft park lt/lft tail lt 24-10amp-pdc blower motor relay 25-10amp-heatseatswitch/hvac controlhead/trailor tow battery charge 26-10amp-hedlt highbeam rt 27-10amp-hedlt highbeam lft
28-spare 29-15amp-heated seat module 30-10amp-heated mirrors/rearwindowdefrosterindicator 31-20amp-cigarlighter
32-10amp-radio/frtdoorlockswitches/bodycontrolmodule
33-10amp-skis/diagnostic connector 34-15amp-cluster/courtesy lts/radio/bodycontrolmodule/maplights/cmtc/underhood lt/vanity lts
35-spare 36-10amp-ignition run/start-orc/lft and rt siacm
37-10amp-ignition run only-orc 38-10amp-abs module/brake shift interlock solenoid 39-10amp-rear window defroster relay/flasher/backup lts
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