Do you use a low or high pressure switch on a jeep?
Older WJ ‘s use a low and high pressure switch, while newer ones have a pressure transducer. Your jeep was most probably made during that transition period. Since your AC compressor still cycles, it seems that the transducer still works. Do you get cold air from the AC? Any change while driving? Click to expand…
How to troubleshoot the air conditioning on a Jeep Liberty?
Unscrew the blue valve cap and screw on the air conditioning pressure gauge. Turn the knob on the pressure gauge counterclockwise to allow pressure into the gauge. Check the gauge reading. Your AC pressure gauge should be color coded.
Where are the low and high AC pressure switches located?
The low-pressure side switch is found before the AC compressor, while the high-pressure switch comes after the compressor. Most AC pressure switches are found within the engine compartment, but some manufacturers put them elsewhere. A look in your service manual will show you the appropriate location for your model. AC Pressure Switch Function
How to jump 3 wire AC pressure switch easily?
Connect the wires according to the numbers printed on it. You have to bypass 3 wire ac pressure switch from B1 to B4 to power up the compressor clutch. The connection sends 0-5 volts of pressure to the PCM fuse. According to expert maintenance tips, it is essential to follow the previous readings in mind.
Older WJ ‘s use a low and high pressure switch, while newer ones have a pressure transducer. Your jeep was most probably made during that transition period. Since your AC compressor still cycles, it seems that the transducer still works. Do you get cold air from the AC? Any change while driving? Click to expand…
Unscrew the blue valve cap and screw on the air conditioning pressure gauge. Turn the knob on the pressure gauge counterclockwise to allow pressure into the gauge. Check the gauge reading. Your AC pressure gauge should be color coded.
Why is there a high and low pressure switch on an AC unit?
Air conditioning pressure switches are designed to protect the A/C system against pressure that is too high or too low. There are both high pressure and low pressure switches; some vehicles are equipped with just a high pressure switch while others have both. Incorrect pressure can damage the compressor, hoses, and other A/C system components.
Connect the wires according to the numbers printed on it. You have to bypass 3 wire ac pressure switch from B1 to B4 to power up the compressor clutch. The connection sends 0-5 volts of pressure to the PCM fuse. According to expert maintenance tips, it is essential to follow the previous readings in mind.
Why does my Jeep Cherokee have a low line pressure fault?
Further investigation by the technician may reveal that the MIL illumination may be due to transmission Diagnostic Trouble Codes (DTC’s) relating to either a “Low Line Pressure” fault and/or to a “Gear Ratio Error” fault. This condition may be intermittent.
When is transmission line pressure normal or low?
6.The transmission line pressure is considered good/normal if the “Actual Line Pressure” reading is within +/- 34 Kpa (+/- 5 psi) of the “Desired Line Pressure” value.Momentary small fluctuates in “Actual Line Pressure” greater than +/- 34 Kpa (+/- 5 psi) may occur. If the “Actual Line Pressure” reading is within +/- 34 Kpa (+/- 5 psi) of
What kind of engine does a Jeep Grand Cherokee have?
The Grand Cherokee vehicles equipped with a 545RFE transmission will have either a 4.7L or 4.7L H.O. engine. Liberty and Cherokee vehicles equipped with a 545RFE transmission will have a 2.8L diesel engine. This bulletin DOES NOT apply to vehicles equipped with any other type of automatic transmission.
Further investigation by the technician may reveal that the MIL illumination may be due to transmission Diagnostic Trouble Codes (DTC’s) relating to either a “Low Line Pressure” fault and/or to a “Gear Ratio Error” fault. This condition may be intermittent.
What does DTC mean on Jeep Cherokee TCM?
If a DTC has occurred then “DTC Event Data” relating to the respective DTC will have been captured and logged in the TCM and may be obtained using the DRB III® scan tool. P0868 – Line Pressure Low. P0731 – Gear Ratio Error In 1st.
The Grand Cherokee vehicles equipped with a 545RFE transmission will have either a 4.7L or 4.7L H.O. engine. Liberty and Cherokee vehicles equipped with a 545RFE transmission will have a 2.8L diesel engine. This bulletin DOES NOT apply to vehicles equipped with any other type of automatic transmission.