Checking component and wiring

Check if there is any refrigerant in the air conditioning (A/C) unit.

HINT: If there is refrigerant in the A/C system there is probably a fault in the A/C pressure sensor.

Check the air conditioning (A/C) system for damage and leakage.

Remedy as necessary.

Other information:

Connecting the breakout box / accessing the control module, see Connecting the breakout box .
Air conditioning (A/C) pressure sensor #2 is the signal cable, #3 is the power supply (5V) and #1 is the signal ground.
For resistance values, see A/C pressure sensor .
For information about signals, see Signal specification .

Fig 1: Identifying Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying A/C Pressure Sensor

Courtesy of VOLVO CARS OF NORTH AMERICA.