A/C Refrigerant Temperature Switch

CAUTION: Do not heat more than necessary.

Dip the metal part of the A/C refrigerant temperature switch into engine oil and increase the oil temperature using a gas burner or similar.

Fig 1: Checking A/C Refrigerant Temperature Switch
Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

When the oil temperature reaches the standard value, check that voltage is supplied between the terminals.

ITEM TEMPERATURE SPECIFICATION (STANDARD VALUE)

Item	Temperature
Less than 2 ohms	Slightly below 120°C (248°F)
No continuity	135°C (275°F) or more

NOTE: When the oil temperature is 135°C (275°F) or more and there is no continuity, the resistance will not be 2O or lower until the oil temperature reduces to 120°C (248°F) or less.

Fig 2: Oil Temperature Graph

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.