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DTC B1422/22 Compressor Lock Sensor Circuit: Description

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

This sensor sends 1 pulse per engine revolution to the air conditioning amplifier. If the ratio of the compressor speed divided by the engine speed is smaller than a predetermined value, the air conditioning amplifier turns the compressor off, and the indicator blinks at approximately 1 second intervals.

DTC DETECTION CONDITION AND TROUBLE AREA REFERENCE

DTC No. DTC Detection Condition Trouble Area
B1422/22 Open or short in compressor lock sensor circuit
All conditions below are detected for 3 seconds or more:
  1. Engine speed: 450 rpm or more
  2. Ratio between engine and compressor speed deviates 20% or more in comparison to normal operation
  • Compressor and magnetic clutch
  • Compressor and magnetic clutch drive belt
  • Compressor lock sensor
  • Wire harness between compressor lock sensor and air conditioning amplifier
  • Air conditioning amplifier