MX-6 L4-1991cc 2.0L DOHC (1993)
Refrigerant Pressure Sensor / Switch: Testing and Inspection
Inspection of Refrigerant Pressure Switch
If problems occur in the refrigerant system that cause abnormally high pressure
(above 2,950-3,330 kPa {30.0-34.0 kgf/cm2 427-483 psi}) or
abnormally low pressure
(below 190-220 kPa {1.9-2.3 kgf/cm2, 28-32 psi}), the refrigerant pressure switch will cut power to the magnetic clutch to
protect the mechanical components. If the pressure recovers to within normal operating range, the power will be restored.
1. Connect a manifold gauge set to the charging valve; verify that the high-pressure side reads
260-2150 kPa {2.6-22.0 kgf/cm2, 37-312 psi}.
2. Disconnect the refrigerant pressure switch connector and verify that there is continuity between the switch terminals.
3. If there is not continuity, replace the refrigerant pressure switch.
Inspection Of Middle Switch (KL engine)
1. Connect a manifold gauge to the charging valve.
2. Disconnect the refrigerant pressure switch connector and check for continuity between terminals C and D.
3. If not as specified, replace the refrigerant pressure switch.
