Mirage L4-1468cc 1.5L SOHC (1993)
Refrigerant Pressure Sensor / Switch: Testing and Inspection
Dual Pressure Switch Testing
1. Disconnect the dual pressure switch connector.
2. Using a jumper wire, connect the terminal on the pressure wiring harness.
3. Connect an ohmmeter to the pressure switch terminals.
4. Install a manifold gauge set to the high side service port.
5. Operate the air conditioning system and check for switch continuity at the specified pressure.
High/Low Pressure Side
PRESSURE INCREASING
OHMMETER READING
33 PSI
Continuity
384 PSI
No continuity
PRESSURE DECREASING
OHMMETER READING
299 PSI
Continuity
30 PSI
No continuity
6. If there is no continuity, replace the switch.
