ENTRY AND START SYSTEM(for Start Function), Diagnostic DTC:U0103, U0129, U0140, U0142, U0293

DTC Code DTC Name
U0103 Lost Communication with Gear Shift Module "A"
U0129 Lost Communication with Skid Control ECU
U0140 Lost Communication with Main Body ECU
U0142 Lost Communication with Main Body ECU
U0293 Lost Communication with Hybrid Vehicle Control System

DESCRIPTION

These DTCs are stored when there is a CAN communication malfunction between the certification ECU (smart key ECU assembly), hybrid vehicle control ECU or main body ECU (multiplex network body ECU), and data from the option connector (bus buffer ECU) cannot be received.

DTC No. Detection Item DTC Detection Condition Trouble Area Note
U0103 Lost Communication with Gear Shift Module "A" CAN communication error between the certification ECU (smart key ECU assembly) and hybrid vehicle control ECU (1-trip detection logic*) Hybrid vehicle control ECU

    DTC Output Confirmation Operation:

  • Always
U0129 Lost Communication with Skid Control ECU CAN communication error between the certification ECU (smart key ECU assembly) and skid control ECU (brake booster with master cylinder assembly) (1-trip detection logic*) Skid Control ECU (Brake Booster with Master Cylinder Assembly)

    DTC Output Confirmation Operation:

  • Always
U0140 Lost Communication with Main Body ECU CAN communication malfunction between certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) (1-trip detection logic*) Main body ECU (multiplex network body ECU)

    DTC Output Confirmation Operation:

  • Always
U0142 Lost Communication with Main Body ECU CAN communication malfunction between certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) (1-trip detection logic*) Main body ECU (multiplex network body ECU)

    DTC Output Confirmation Operation:

  • Always
U0293 Lost Communication with Hybrid Vehicle Control System CAN communication error between certification ECU (smart key ECU assembly) and hybrid vehicle control ECU (1-trip detection logic*) Hybrid vehicle control ECU

    DTC Output Confirmation Operation:

  • Turn the power switch on (IG) and wait at least 10 seconds.

Vehicle Condition and Fail-safe Function when Malfunction Detected
DTC Code Vehicle Condition when Malfunction Detected Fail-safe Function when Malfunction Detected
U0103 Hybrid control system does not start -
U0129 Hybrid control system does not start -

U0140

U0142

  • Doors cannot be locked or unlocked.

  • The warning (wireless buzzer) does not sound.

 -
U0293 The warning (meter buzzer) does not sound and no warning messages displayed on the multi-information display. -
Related Data List and Active Test Items
DTC No. Data List and Active Test

U0103

U0129

U0140

U0142

U0293

 -

CAUTION / NOTICE / HINT

Note


  • When using the GTS with the power switch off, connect the GTS to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins. Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start(CAN). While using the GTS, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the GTS and the vehicle.

  • After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

Tech Tips

When the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs and note any DTCs that are output.

      Click here

      Result
      Proceed to
      NEXT

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