These DTCs are stored when there is a CAN communication malfunction between the certification ECU (smart key ECU assembly and ECM, skid control ECU (brake actuator assembly), main body ECU (multiplex network body ECU) or combination meter assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| U0100 | Lost Communication With ECM/PCM "A" | CAN communication malfunction between certification ECU (smart key ECU assembly) and ECM (1-trip detection logic*) | ECM | DTC Output Confirmation Operation:
Turn the engine switch on (IG) and wait at least 10 seconds. |
| U0129 | Lost Communication with Brake System Control Module | CAN communication malfunction 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 engine switch on (IG) and wait at least 10 seconds. |
| U0142 | Lost Communication with Body Control Module "B" | 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:
Turn the engine switch on (IG) and wait at least 10 seconds. |
| U0155 | 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 engine switch on (IG) and wait at least 10 seconds. |
| U1103 | Lost Communication with Stop and Start Control Module | CAN communication malfunction between certification ECU (smart key ECU assembly) and engine stop and start ECU (1-trip detection logic*) | Engine stop and start ECU | DTC Output Confirmation Operation:
Turn the engine switch on (IG) 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 |
|---|---|---|
| U0100 | There is no effect on vehicle behavior. | - |
| U0129 | There is no effect on vehicle behavior. | - |
| U0142 | Doors cannot be locked or unlocked. | - |
| U0155 | The warning (meter buzzer) does not sound and no warning messages displayed on the multi-information display. | - |
| U1103 | ·
The ECU incorrectly judges the engine as stalled when the engine is stopped by the stop and start system. ·
The immobiliser system is set due to a door being operated when the engine is stopped by the stop and start system. |
- |
| DTC No. | Data List and Active Test |
|---|---|
| U0100
U0129 U0142 U0155 U1103 |
- |
When using the GTS with the engine 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".
Check for DTCs and note any DTCs that are output.
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