Checking the power supply to the compressor

Connect an ohmmeter between the cylinder block and the connector (compressor side).

• The ohmmeter reads approximately 0 Ω. Refer to Fault-tracing information 
• The ohmmeter reads 2-5 Ω: Refer to Checking for an open-circuit 
• The ohmmeter reads infinite resistance. Refer to Fault-tracing information .

Fig 2: Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.