S90 L6-2.9L VIN 96 B6304S (1998)
Service Port HVAC: Locations
AC Service Port is located on Receiver/Dryer. Used when draining and refilling the system, and for pressure measurement/troubleshooting.
NOTE: Volvo does not provide a service port for the high pressure side of the A/C system. Technicians in the field have reported that removing the
high pressure switch will let you connect equipment to the high side of the system. In order for the A/C system to operate with the high pressure switch
removed, the connector pins must be jumpered together.
