These DTCs are stored when there is a CAN communication malfunction between the certification ECU (smart key ECU assembly) and skid control ECU (brake booster with master cylinder assembly), main body ECU (multiplex network body ECU), combination meter assembly, hybrid vehicle control ECU or option connector (bus buffer ECU).
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| U012987 | Lost Communication with Brake System Control Module Missing Message | CAN communication error between 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:
Turn the ignition switch to ON and wait at least 10 seconds. |
| U014087 | Lost Communication with Body Control Module Missing Message | 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 |
| U015587 | Lost Communication with Instrument Panel Cluster (IPC) Control Module | CAN communication malfunction between certification ECU (smart key ECU assembly) and combination meter assembly (1-trip detection logic*) | Combination meter assembly | DTC Output Confirmation Operation:
Turn the ignition switch to ON and wait at least 10 seconds. |
| U029387 | Lost Communication with Hybrid Powertrain Control Module Missing Message | 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 ignition switch to ON and wait at least 10 seconds. |
| U111787 | Lost Communication with Accessory Gateway Missing Message | CAN communication malfunction between the certification ECU (smart key ECU assembly) and the option connector (bus buffer ECU) for approximately 10 seconds or more. | Option connector (bus buffer ECU) | DTC Output Confirmation Operation:
Turn the ignition switch to ON and wait at least 10 seconds. |
*: Only detected while a malfunction is present.
| DTC Code | Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|---|
| U012987 | There is no effect on vehicle behavior. | - |
| U014087 | ·
Doors cannot be locked or unlocked. ·
The warning (wireless buzzer) does not sound. |
- |
| U015587 | The warning (meter buzzer) does not sound and no warning messages displayed on the multi-information display. | - |
| U029387 | There is no effect on vehicle behavior. | - |
| U111787 | The hybrid control system cannot be started using the wireless remote control function. | - |
| DTC No. | Data List and Active Test |
|---|---|
| U012987
U014087 U015587 U029387 U111787 |
- |
When using the GTS with the ignition 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".
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.
Check for DTCs and note any DTCs that are output.
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