Single Pressure Switch

A3 A/C SINGLE PRESSURE SW
3 - 2 : Open above approx. 15.5 kgf/sq.cm (224 psi, 1520 kpa)
: Closed below approx. 12.5 kgf/sq.cm (161 psi, 1225 kpa)

W4 WATER TEMPERATURE SW NO.1
2 - 1 : Open above approx. 95 °C (203 °F)

W5 WATER TEMPERATURE SW NO.2 (1MZ- FE)
1 - GROUND : Continuity above approx. 90 °C (194 °F)