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http://www.bbbind.com/free-tsb Free wiring diagrams ,fuse box ,electrical distribution diagrams . Enter vehicle info.year , make , model , engine . Under system click on restraints then under subsystem click on air bags . Click the search button ,then the blue link. .
Check to see if the coils are covered in ice.... unplug for a few hours and let it thaw out... 99% of the time this is the problem.. high humidity causes water to form and freeze up over the coils rendering the ac useless until thawed but... place it somewhere the water will not damage anything
There are about 100 pages of diagrams. Wiring is broken down into systems. For example, headlights, engine controls, power windows, power locks, air conditioning, etc.
what do you need them for or what is the problem you are having?
Have the system pressures tested with a set of AC pressure gauges at a local shop to determine whether the system is low on refrigerant. If the system is found to be low the leak must be repaired, the system evaluated with a special vacuum pump and then refilled with the correct amount of R134 refrigerant.
YOU COULD HAVE OPEN OR SHORT IN THE BLACK YELLOW WIRE GOING TO AC COMPRESSOR CYCLING PRESSURE SWITCH. CHECK FOR A SHORT OR OPEN IN RED YELLOW WIRES AT THE AC PRESSURE CUTOFF SWITCH. USE VOLT METER AND CHECK FOR VOLTAGE AT BOTH SWITCHES. PROBLEM COULD BE IN THE EATC MODULE THAT SEND POWER TO PURPLE WIRE THAT FEEDS THE AC PRESSURE CUTOFF SWITCH AND AC CLUTCH CYCLING PRESSURE SWITCH THEN FEEDS THE AC COMPRESSOR CLUTCH SOLENOID.
Hello there and welcome to fixya: in the 1991 series the blazer and the jimmy all used the same routing i have provided you with the routing diagram below
you are probably low on freon. Pop your hood and see if the compressor keeps clikcing every 5-10 seconds. If it is then you are low on freon. The compressor is on the front of the engine and will have a pulley on it being spun by a belt. you will be able to hear it without seeing it.
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