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DTC B1422/22: COMPRESSOR LOCK SENSOR CIRCUIT Lexus RX I

Automatic HVAC System ~143 words
  1. Remove ECM, located behind passenger side kick panel. Leave harness connectors attached. Start engine. Press AUTO button to ON position.
  2. Measure voltage (backprobe) between ECM connector (E5 on 2000; E7 on 2001) terminal No. 10 (White/Blue wire) and ground. (Схема №5)or (Схема №6). If 10-14 volts are present, no problem is indicated at this time. If 10-14 volts are not present, go to next step.
  3. If battery voltage is not present, check compressor (A/C compressor magnetic clutch) lock sensor. See «COMPRESSOR LOCK SENSOR»(ref-98896-S03967805742001060500000) under COMPONENT TESTS. If sensor is okay, go to next step. Replace sensor as necessary.
  4. Inspect wiring harness and connectors between A/C ECU, ECM, and compressor lock sensor. See «WIRING DIAGRAMS»(ref-98896-S06345939912001060500000). Repair harness and connectors as necessary. If wiring harness and connectors are okay, temporarily substitute known-good ECM and/or A/C ECU, and retest system.

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