Operation CHARM: Car repair manuals for everyone.

Compressor HVAC: Testing and Inspection





HEATING / AIR CONDITIONING: COMPRESSOR: INSPECTION

1. INSPECT A/C COMPRESSOR (A/C LOCK SENSOR)

(a) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





If the resistance is not as specified, replace the A/C compressor.

Text in Illustration





2. INSPECT A/C COMPRESSOR (A/C COMPRESSOR SOLENOID)

(a) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





If the resistance is not as specified, replace the A/C compressor.

Text in Illustration





3. INSPECT A/C COMPRESSOR (A/C COMPRESSOR - MAGNETIC CLUTCH)

(a) Disconnect the connector from the A/C compressor.





(b) Disconnect the connector from the magnetic clutch.





(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





If the resistance is not as specified, replace the A/C compressor.

Text in Illustration





4. INSPECT MAGNETIC CLUTCH

(a) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





If the resistance is not as specified, replace the magnetic clutch.

Text in Illustration





(b) When connector terminal 1 is connected to the positive (+) battery terminal, check that the following occurs: 1) the magnetic clutch's operating sound can be heard, and 2) the magnetic clutch's hub and rotor lock.

OK:

1)
The magnetic clutch's operating sound can be heard.

2)
The magnetic clutch's hub and rotor lock.

If the result is not as specified, replace the magnetic clutch.