on the fuel rail. Most do not have a test port. An adapter will need connected into the supply line.
The low pressure air conditioner port can be found on the top of the air conditioner compressor. The low pressure port should be labeled as such.
Trace the lines from the compressor. Probably toward the firewall you will find the low pressure port made to a sliver pipe.
2, a high and a low pressure port
There are two aluminum tubes coming out of the compressor. The high pressure tube goes to the condensor in front of the radiator. The low pressure tube is the other tube, and the port has a black plastic cap over it, on the low pressure tube.
You charge through the low side port.You charge through the low side port.
front passenger side, look for the fitting on the line .
It is behind the engine, up near the firewall.
Refrigerant is added through the low side service port. That is the smaller of the two fittings on the ac lines.
It is added through the low pressure service port.
On the ac line along the firewall.On the ac line along the firewall.
On the evaparotor (black canister) on passenger side