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Home >> Toyota >> 2020 >> 86 Base, Standard Trans >> Repair and Diagnosis (Single Page) >> Body & Frame >> Door Locks >> Smart Key System (Keyless Start) - Diagnostic Codes & Symptom Tests >> SMART KEY SYSTEM (for Start Function) >> Diagnostic Codes >> DTC U0073: Control Module Communication Bus Off; DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0101: Lost Communication with TCM; DTC U0122: Lost Communication with Vehicle Dynamics Control Module; DTC U0140: Lost Communication with Body Control Module; DTC U0155: Lost Communication with Instrument Panel Cluster Control Module (Combination Meter); DTC U0401: Invalid Data Received from ECM/PCM "A"; DTC U0422: Invalid Data Received from Body Control Module [03/2017 - ] >> Caution / Notice / Hint
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Caution / Notice / Hint

NOTE:
  • When using the Techstream with the vehicle engine switch off, connect the Techstream to the vehicle and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
  • After performing repairs, perform the operation that fulfills the DTC output confirmation operation, and then confirm that no DTCs are output again.
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