Universal Air SW4003C HVAC Binary Switch

HVAC Binary Switch for Toyota and Mitsubishi Applications

Universal Air SW4003C is a binary HPCO/LPCO switch used in automotive air conditioning systems to monitor refrigerant pressure and help protect the compressor circuit. It is a direct-fit style HVAC binary switch for a wide range of Toyota, Lexus, and Mitsubishi applications, including Toyota 4Runner, Tacoma, Tundra, Supra, T100, Previa, and Land Cruiser models.

Key Features

• Binary HPCO/LPCO switch for HVAC pressure control
• Fits select Toyota, Lexus, and Mitsubishi vehicles
• Supports high-pressure and low-pressure compressor protection logic
• Part number SW4003C for ordering and reference
• Universal Air Binary HPCO/LPCO Switch product line

Detailed Description

Universal Air SW4003C is an HVAC binary switch used in air conditioning systems that rely on high-pressure cutout and low-pressure cutout protection. It is listed for applications such as Fits 2010-2020 Toyota 4Runner, N/A; Fits 2005-2015 Toyota Tacoma, N/A; Fits 2000-2009 Toyota Tundra, N/A; and Fits 1993-1998 Toyota Supra, N/A. Additional coverage includes select Lexus SC300, Mitsubishi Eclipse, Mitsubishi Montero, Toyota Land Cruiser, Toyota T100, and Toyota Previa applications. If you are replacing a failed Toyota 4Runner HVAC binary switch or sourcing a SW4003C replacement for a Tacoma or Tundra A/C system, this part number helps narrow the correct match.

The Binary HPCO/LPCO Switch line from Universal Air is focused on pressure-switch control in automotive HVAC systems. SW4003C is identified for multiple Toyota and Mitsubishi platforms, making it a practical reference part when diagnosing compressor cutout issues tied to refrigerant pressure.

Common Issues This Part May Address

• A/C compressor not engaging due to pressure switch failure
• Compressor cycling caused by incorrect high- or low-pressure signal
• System shutdown from a faulty HVAC pressure switch
• Intermittent air conditioning operation on Toyota and Mitsubishi vehicles
• Pressure-related compressor protection faults in the HVAC circuit

Installation Notes and Tips

Verify the original switch connector, pressure-switch style, and vehicle application before installation. Compare the existing part number and HVAC system configuration on the vehicle to confirm SW4003C matches the required binary HPCO/LPCO switch. For best results, inspect the A/C system for refrigerant charge issues, wiring damage, or connector corrosion before replacing the switch.

Quality Assurance

Universal Air SW4003C is cataloged as an HVAC binary switch for specific vehicle applications and should be matched to the vehicle’s original pressure-switch specification. Confirm fitment against the listed year, make, and model before installation.