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DTC B1422/22: Compressor Lock Sensor Circuit: Description

This sensor sends 1 pulse per engine revolution to the ECM.

If the ratio between engine and compressor speed deviates 20% or more compared to normal operation, the ECM turns the cooler compressor off and the indicator blinks at approximately 1 second intervals. The ECM informs the A/C amplifier of the operation condition of the cooler compressor through multiplex communication (CAN and BEAN).

DTC DETECTION CONDITION

DTC No. DTC Detection Condition Trouble Area
B1422/22 Open or short in compressor lock sensor circuit
  • A/C compressor
  • A/C compressor drive belt
  • A/C compressor and magnetic clutch lock sensor
  • Harness and connector between ECM and A/C compressor
  • ECM
  • A/C amplifier
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