Last Modified: 4-30-2014 6.6 C Doc ID: RM0000018N1001X agn Model Year: 2006 Model: LX470 Prod Date Range: [05/2005 - ] Title: AIR CONDITIONING: AIR CONDITIONING SYSTEM: 22; Compressor Lock Sensor Circuit; 2006 MY LX470 [05/2005 - ] DTC 22 Compressor Lock Sensor Circuit DESCRIPTION This sensor sends 1 pulse per engine revolution to the ECM. f the number ratio of the compressor speed divided by the engine speed is smaller than a predetermined value, the ECM turns the compressor OFF. The indicator lashes at about 1 second intervals. DTC NO. DETECTION ITEM TROUBLE AREA 22 All conditions below are detected for 3 seconds or more (a) Engine speed:
450 rpm or more (b) Ratio between engine and compressor speed deviates 20% or more in comparison with normal operation Compressor lock sensor Compressor ECM Harness or connector between compressor lock sensor and ECM Harness or connector between ECM and A/C amplifier A/C amplifier WIRING DIAGRAM INSPECTION PROCEDURE PROCEDURE 1. CHECK COMPRESSOR LOCK SENSOR (a) Disconnect the A4 compressor connector. (b) Measure the resistance between terminals 1 and 2 of the compressor lock sensor connector. Standard resistance: 65 to 125 Ω at 20°C (68°F) NG REPLACE COMPRESSOR cardi REPLACE COMPRESSOR