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Pressure Switch Check

WARNING: This page is about a different car, the 2005 Dodge Stratus and 2005 Chrysler Sebring. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the dual pressure switch connector and connect the high/low pressure side terminals located on the harness side as shown in the illustration.
  2. Install a gauge manifold to the high-pressure side service valve of the refrigerant line. (Refer to REFILLING OF OIL IN THE A/C SYSTEM  .)
  3. When the high/low pressure sides of the dual pressure switch are at operation pressure (ON) and the resistance is less than 2 ohms between the respective terminals, then the condition is normal. If open loop, replace the switch.
    ITEM SPECIFICATION

    ITEM SWITCH POSITION
    OFF to ON ON to OFF
    Low-pressure side kPa (psi) 195 - 250 (28.3 - 36.2) 176 - 216 (25.5 - 31.3)
    High-pressure side kPa (psi) 2,350 - 2,950 (340.9 - 427.9) 3,140 - 3,340 (455.5 - 484.5)
    Fig 1: Checking Pressure Switch
    G04538737Courtesy of DAIMLERCHRYSLER CORPORATION
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