Four Seasons A/C Trinary Switch 20049
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Four Seasons A/C Trinary Switch 20049
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A/C Trinary Switch for 1993-2004 Isuzu Rodeo & More - Four Seasons 20049

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$69.99
MPN: 20049
Item Package Quantity: 1
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Four Seasons A/C Trinary Switch P/N:20049
Four Seasons A/C Trinary Switch P/N:20049
$69.99

Help guard your air conditioning system against pressure extremes with this Four Seasons switch, part number 20049, a system-mounted trinary pressure switch. It fits many vehicles, among them the 1994-2002 Honda Passport, 1993-2004 Isuzu Rodeo and 2002-2003 Isuzu Axiom, as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for engine details and the full list.

A trinary switch combines three pressure-sensing jobs in one unit. It is designed to cut compressor operation when refrigerant pressure drops too low or climbs too high, and it typically signals the cooling fan to engage at an intermediate pressure. Four Seasons engineers and tests its products, drawing on more than 50 years of mobile A/C experience.

  • Corrosion protection: zinc coated to resist corrosion.
  • Vehicle-specific: built for the specific applications it is listed for.
  • Sealing parts included: comes with the gaskets, O-rings or seals needed to replace it properly.
  • Easy to identify: color coded for quick identification.

Signs this switch may need replacing include an A/C compressor that won't engage or cycles erratically, a cooling fan that doesn't come on with the A/C running, or warm air from the vents. Low refrigerant or electrical faults can cause the same symptoms, so diagnose the cause before replacing the switch.

Interchange: 1551162 · 207996 · 11120049 · 19194735 · 1711694 · 8970833440 · 8970935090 · 8972345420 · 8973669640 · A07996 · MT1249 · 26449 · SW10027C · SW11148 · SW11148C

This part cross-references / interchanges with the following part numbers:

1551162, 207996, 20049, 11120049, 19194735, 1711694, 8970833440, 8970935090, 8972345420, 8973669640, A07996, MT1249, 26449, SW10027C, SW11148, SW11148C

Frequently Asked Questions

What does a trinary A/C pressure switch do?

It combines three functions in one unit. It is designed to cut compressor operation at low or high refrigerant pressure and typically signals the cooling fan to engage at an intermediate pressure.

Is this the right Axiom switch for a 2002-2003 Isuzu Axiom?

Four Seasons 20049 is listed for the 2002-2003 Isuzu Axiom, as well as the 1994-2002 Honda Passport and the 1993-2004 Isuzu Rodeo. See the Buyer's Guide tab to confirm your vehicle.

What comes in the box with part 20049?

You get the trinary pressure switch. Four Seasons includes the gaskets, O-rings or seals needed to replace it properly.

Is the switch protected against corrosion?

Yes. It is zinc coated to resist corrosion, and it is color coded for easy identification.

What are signs of a failing A/C trinary switch?

The switch may be at fault if the compressor won't engage or cycles erratically, or if the cooling fan stays off with the A/C on. Low refrigerant or wiring faults cause similar symptoms, so diagnose first.

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