2001 Lexus GS 300 L6-3.0L (2JZ-GE) - Reading Diagnostic Trouble Codes

This is the only information provided by the manufacturer for reading diagnostic trouble codes for this system. If compressor lock occurs during A/C operation, the A/C switch indicator on the A/C control assembly starts blinking.
1. WARNING FOR A/C COMPRESSOR LOCK
When this occurs, check for compressor lock (DTC B1422) using diagnosis trouble code check then proceed to inspect the circuit or the component. Compressor lock sensor circuit. (See DTC B1422 Compressor Lock Sensor Circuit)