Four Seasons 20942 HVAC Binary Switch

Four Seasons 20942 Pressure Switch Overview

The Four Seasons 20942 HVAC binary pressure switch is a system-mounted replacement built for pressure-based A/C control. It uses a round male connector, a 2-terminal layout, and a steel body with a 3/8 in. x 24 male thread for direct service replacement on supported Toyota applications.

Four Seasons Pressure Switch components are built for OE-style service work, and this part meets or exceeds OEM requirements for the listed applications. The 20942 pressure switch is a direct-fit option for Toyota MR2, Paseo, Previa, Tercel, and Cressida models within the confirmed year ranges.

Key Features

• HVAC binary pressure switch for system-mounted installation
• Round male connector with 2 terminals
• Male fitting with 3/8 in. x 24 thread size
• Steel construction for service replacement use
• Open compressor state at low pressure, with 30 psi low-off and 34 psi low-on operation
• Meets or exceeds OEM specifications for the listed fitments
• Four Seasons 20942 direct replacement reference

Detailed Product Description

This Four Seasons 20942 pressure switch monitors HVAC system pressure and helps control compressor operation based on the specified pressure thresholds. It is a binary switch type with an open compressor state, designed for system-mounted use and equipped with a male threaded fitting and round male connector. The steel housing supports dependable replacement service in factory-style A/C systems.

Compatible With Toyota MR2, Toyota Paseo, Toyota Previa, Toyota Tercel, and Toyota Cressida applications in the confirmed model years, this part is a practical choice when replacing a failed pressure switch on the A/C system. This part cross-references A07754 and MT0355 for the same application. Four Seasons 20942 is the part number to verify when matching the correct HVAC pressure switch for these vehicles.

What This Part Helps Address

• A/C compressor cycling that is inconsistent or inoperative
• Pressure switch faults that trigger HVAC control issues
• Loss of compressor engagement caused by pressure-sensing failure
• System shutdown related to incorrect low-pressure readings
• Service replacement needs on Toyota HVAC pressure switch applications

Installation Notes and Tips

Confirm the connector shape, terminal count, and 3/8 in. x 24 male thread before installation. Verify the vehicle’s HVAC pressure switch location and compare the original part number, connector style, and operating pressure range to the Four Seasons 20942. For best results, inspect the system for refrigerant-related issues before replacing the switch.

Fits 1991-1995 Toyota MR2, N/A. Fits 1992-1995 Toyota Paseo, N/A. Fits 1991-1993 Toyota Previa, N/A. Fits 1991-1993 Toyota Tercel, N/A. Fits 1989-1992 Toyota Cressida, N/A.

Quality Assurance

This Four Seasons Pressure Switch part is listed as meeting or exceeding OEM requirements for the confirmed applications, supporting OE-style service replacement standards for Toyota HVAC systems.