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), combination meter assembly, multiplex network door ECU*1, engine stop and start ECU*2 or bus buffer ECU and data from the option connector (bus buffer ECU) cannot be received.
*1: w/ Power Back Door System
*2: w/ Engine Stop and Start System
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Note |
|---|---|---|---|---|
| U010087 | Lost Communication with ECM/PCM "A" Missing Message | CAN communication malfunction between certification ECU (smart key ECU assembly) and ECM (1-trip detection logic*1) | ECM | DTC Output Confirmation Operation:
Turn the ignition switch to ON and wait at least 10 seconds. |
| U012987 | Lost Communication with Brake System Control Module "A" Missing Message | CAN communication malfunction between certification ECU (smart key ECU assembly) and skid control ECU (brake actuator assembly) (1-trip detection logic*1) | Slid control ECU (brake actuator 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*1) | Main body ECU (multiplex network body ECU) | DTC Output Confirmation Operation:
Turn the ignition switch to ON and wait at least 10 seconds. |
| 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*1) | Combination meter assembly | DTC Output Confirmation Operation:
Turn the ignition switch to ON and wait at least 10 seconds. |
| U023087 | Lost Communication with Rear Gate Module Missing Message | CAN communication malfunction between certification ECU (smart key ECU assembly) and multiplex network door ECU (1-trip detection logic*1)*2 | Multiplex network door ECU | DTC Output Confirmation Operation:
Turn the ignition switch to ON and wait at least 10 seconds. |
| U110387 | Lost Communication with Stop and Start Control Module Missing Message | CAN communication malfunction between certification ECU (smart key ECU assembly) and engine stop and start ECU (1-trip detection logic*1)*3 | Engine stop and start 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 (busbuffer 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. |
*1: Only detected while a malfunction is present.
*2: w/ Power Back Door System
*3: w/ Engine Stop and Start System
| DTC Code | Vehicle Condition when Malfunction Detected | Fail-safe Function when Malfunction Detected |
|---|---|---|
| U010087 | There is no effect on vehicle behavior. | If the following conditions are met, it can be determined that the malfunction is not in the direct line (NE) but in the CAN communication system.
·
When the engine switch is pressed, the system controls the engine based on the engine speed signal via direct line, causing the engine to stop cranking. ·
When the engine switch is pressed and held, the system controls the engine based on the engine speed signal via direct line, causing the engine to stop cranking. If the following conditions are met, it can be determined that there is a malfunction in both the CAN communication system and the direct line (NE). ·
When the engine switch is pressed, the engine stops cranking after 6 seconds. ·
When the engine switch is pressed and held, the engine remains cranking for up to 30 seconds. |
| U012987 | Engine does not start. | - |
| U014087 | ·
Doors cannot be locked or unlocked. ·
The warning (meter buzzer) does not sound. |
- |
| U015587 | The warning (meter buzzer) does not sound and no warning messages displayed on the multi-information display. | - |
| U023087*1 | Power back door system does not operate. | - |
| U110387*2 | ·
When idling is stopped by the stop and start system, the ECM misjudges it as an engine stall. ·
While the engine stopped by the stop and start system, the immobiliser system is set due to a door operation. |
- |
| U111787 | The engine cannot be started using the wireless remote control function. | - |
*1: w/ Power Back Door System
*2: w/ Engine Stop and Start System
| DTC No. | Data List and Active Test |
|---|---|
| U010087
U012987 U014087 U015587 U023087*1 U110387*2 U111787 |
- |
*1: w/ Power Back Door System
2: w/ Engine Stop and Start System
When using the GTS with the ignition switch off, perform lock and unlock operations using the door control switch of the multiplex network master switch assembly at intervals of 1.5 seconds or less until communication between the GTS and the vehicle begins, and then select the vehicle model manually.
Then select Model Code "KEY REGIST" under manual mode and enter the following menus: Body Electrical / Entry&Start (CAN). While using the GTS, periodically perform lock and unlock operations using the door control switch of the multiplex network master switch assembly 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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