Low ac port side - 2001 Lexus LS 430

The charging port is in the low side AC line from the AC compressor on the engine, the low side line is the larger of the two lines coming from the AC compressor.

You low pressure port is against the firewall just below the center of the cowl and is best accessed from the drivers side

CHECK REFRIGERANT CHARGE. USING A MANIFOLD GAUGE SET. HOOK MANIFOLD GAUGE SET TO LOW PRESSURE PORT AND HIGH PRESSURE SIDE PORT. LOW SIDE PRESSURE SIDE SHOULD HAVE 25 - 36 PSI AND HIGH PRESSURE SIDE SHOULD BE 178 - 237 PSI. IF LOW SIDE PRESSURE SIDE READ BELOW 20 PSI THE LOW PRESSURE SWITCH WILL NOT TURN ON THE AC COMPRESSOR CLUTCH NEED TO ADD LITTLE MORE REFRIGERANT. IF REFRIGERANT LEVEL CORRECT CHECK AC COMPRESSOR FUSE AND RELAY.IF POWER GOING TO AC COMPRESSOR CLUTCH YOUR COMPRESSOR CLUTCH HAS OPEN WINDING. AC COMPRESSOR CLUTCH NEED REPLACING.

The low side port is the one that is on the larger of the two AC hoses from the AC compressor.

Do you have ac gauges?You can only check with set of 134a gauges.Hook the red hose of the ac gauges to the large ac port on the high side ac line(it is the small ac line/hose).Do not turn the red knob on (on the ac gauges)If need to hook up low side(blue hose)to the small ac port on the low side line(it is the large ac port).If I can help,let me know.

no,,, but find compressor and look for ac lines coming from it follow the large ac line untill u come to the small service port this is the low side the large port on the small line is the high side ,dont use it u can only hook to low side with single charge hose

the low side on this year is on the larger lines of the two sizes,it will be the 1/4 in service port,the larger of the two ports the small service port is on the small line ,it is the high side ,,but that is for r12 system which it came out with,if it has been retofitted to 134a freon use it will have a different kind of service port the large line will have the smaller of the two ports it is the low side ,looks like a quick connect,,,,if it hasnt been changed over ,go to parts store and ask for service port retrofit for 134s low side ,if u do not have gauges dont get the high side service port,,,if so ask for 3/16 size high side retofit .

2.4L engine AC low side charge port is located near the right shock tower. 3.4-3.1 engines AC low side charge port.remove right tire on driver side.remove splash shield.

Your service port will always be in the larger line of the two .. which is low pressure side. It might be in the dryer also which is low side.. your dryer is about 3 inches across and 8 inches long and also has your pressure switch for the AC compressor in it.. holler if you dont find it now... thanks Jerry

the low side charging port is near the AC Accumulator/Reciever dryer cannister in the larger of the 2 AC lines.