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Home >> Lexus >> 2006 >> RX 330 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Air Conditioning System - Diagnostics) >> DTC 22 Compressor Lock Sensor Circuit >> Circuit Description

Circuit Description

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

This sensor sends 4 pulses par engine revolution to the A/C amplifier. If the ratio of the compressor speed divided by the engine speed is smaller than a predetermined value, the A/C amplifier turns the compressor off, and the indicator flashes at about 1 sec. intervals.

TERMINALS VOLTAGE SPECIFICATION

DTC No. Detection Item Trouble Area
22 All conditions below are detected for 3 sec. 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.
  • Cooler compressor assy
  • Compressor drive belt
  • Compressor lock sensor
  • Harness or connector between compressor lock sensor and compressor A/C amplifier assy
  • A/C amplifier assy
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