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TM-450 < DTC/CIRCUIT DIAGNOSIS > [CVT: RE0F10D] U0164 LOST COMMUNICATION (HVAC) U0164 LOST COMMUNICATION (HVAC) DTC Logic INFOID:0000000012201148 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. PREPARATION BEFORE WORK If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at least 10 seconds, then perform the next test. >> GO TO 2. 2. PERFORM DTC CONFIRMATION PROCEDURE 1. Start the engine and wait for at least 5 seconds. 2. Check the DTC. YES >> Go to NO >> INSPECTION END Diagnosis Procedure INFOID:0000000012201149 For the diagnosis procedure, refer to LAN-17, "Trouble Diagnosis Flow Chart" DTC CONSULT screen terms (Trouble diagnosis content) DTC detection condition Possible causes U0164 LOST COMM (HVAC) When the ignition switch is ON, TCM is unable • A/C auto amp. (CAN communication line is open or |