A/C Refrigerant Temperature Switch

WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Do not heat more than necessary.

Dip the metal part of the cooling temperature switch into engine oil and increase the oil temperature using a gas burner or similar.

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

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

Standard value:

ITEM TEMPERATURE CHART

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 2Ω 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.