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The ECM sends a engine speed signal to the air conditioning amplifier via the CAN communication system. The air conditioning amplifier reads the difference between compressor speed and engine speed. When the DTC DETECTION CONDITION CHART WIRING DIAGRAM Fig. 43: Compressor Lock Sensor - Wiring Diagram INSPECTION PROCEDURE 1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM) a. Use the Techstream to check if the CAN communication system is functioning normally. Result DTC DTC Detection Condition Trouble Area B1422/22 Open or short in compressor lock Air conditioning compressor Compressor drive belt Air conditioning amplifier CAN communication system
2009 Toyota Tundra 2009 HVAC Air Conditioning - Tundra
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