LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Key System (For Start Function) - Diagnostic Codes & Symptom Tests >> SMART KEY SYSTEM (for Start Function) >> DTC U0103: Lost Communication with Gear Shift Module "A"; DTC U0129: Lost Communication with Skid Control ECU; DTC U0140: Lost Communication with Main Body ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0293: Lost Communication with EV Control System; DTC U1117: Lost Communication with Accessory Gateway [06/2015 - ] >> Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC U0103: Lost Communication with Gear Shift Module "A"; DTC U0129: Lost Communication with Skid Control ECU; DTC U0140: Lost Communication with Main Body ECU; DTC U0142: Lost Communication with Main Body ECU; DTC U0155: Lost Communication with Combination Meter; DTC U0293: Lost Communication with EV Control System; DTC U1117: Lost Communication with Accessory Gateway [06/2015 - ]: Procedure

  1. CHECK FOR DTC 
    1. Note any DTCs that are output.

      Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - ]

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [06/2015 - 11/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - ] 

scientia non olet · About LEMON Manuals