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DTC B1451/51 Compressor Solenoid Circuit: Description

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

In this circuit, the compressor receives a refrigerant compression demand signal from the air conditioning amplifier. Based on this signal, the compressor changes the degree of refrigerant compression.

DTC DETECTION CONDITION AND TROUBLE AREA

DTC No. DTC Detection Conditions Trouble Areas
B1451/51 Open or short in solenoid of externally changeable compressor circuit
  • A/C compressor*
  • Wire harness between air conditioning amplifier and A/C compressor*
  • Air conditioning amplifier