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DTC 23: Pressure Switch Circuit: Description

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

The pressure switch sends the appropriate signals to the A/C amplifier when the A/C refrigerant pressure drops too low or rises too high. When the A/C amplifier receives these signals, it outputs signals via the A/C amplifier to switch OFF the compressor relay and turns the magnetic clutch OFF.

DETECTION ITEM AND TROUBLE AREA

DTC No. Detection Item Trouble Area
23
  • Open in pressure sensor circuit
  • Abnormal refrigerant pressure below 196 kPa (2.0 kg/cm2 , 28 psi) over 3,140 kPa (32.0 kgf/cm2 , 455 psi)
  • Pressure switch
  • Harness or connector between pressure switch and A/C amplifier
  • Refrigerant pipe line
  • A/C amplifier