If the new key registration warning message is not displayed after an electrical key transmitter sub-assembly has been registered, there may be communication problem between the certification ECU (smart key ECU assembly) and combination meter assembly (meter ECU).
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 the vehicle type under manual mode and enter the following menus: Body Electrical / Entry&Start. 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.
The smart entry and start system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart entry and start system (for Start Function) after confirming that the communication systems are functioning properly.
Before replacing the certification ECU (smart key ECU assembly), refer to Service Bulletin.
After repair, confirm that no DTCs are output.
Check that there are no electrical key transmitter sub-assemblies in the vehicle.
When replacing the combination meter assembly, always replace it with a new one. If a combination meter assembly which was installed to another vehicle is used, the information stored in it will not match the information from the vehicle and a DTC may be stored.
Check for DTCs.
| Result | Proceed to |
|---|---|
| DTCs are not output | A |
| DTCs are output | B |
A
B
Read the Data List according to the display on the GTS.
| Tester Display | Measurement Item | Range | Normal Condition | Diagnostic Note |
|---|---|---|---|---|
| FL Door Courtesy Switch Status | Front door LH courtesy light switch signal*1 | Close or Open | Close: Front door LH closed
Open: Front door LH open |
- |
| Tester Display |
|---|
| FL Door Courtesy Switch Status |
| Result | Proceed to |
|---|---|
| On the GTS screen, ON or OFF is displayed accordingly. | A |
| On the GTS screen, ON or OFF is not displayed accordingly. | B |
A
B
With the electrical key transmitter sub-assembly in the vehicle and all of the doors closed, lock the doors using the entry lock function and check that the warning message is displayed on the multi-information display.
In order to prevent the electrical key transmitter sub-assembly from being locked inside the vehicle, perform this inspection with the window of a door open.
Key lock-in prevention function (vehicle interior).
| Result | Proceed to |
|---|---|
| The warning message is displayed on the multi-information display. | A |
| The warning message is not displayed on the multi-information display. | B |
A
B
Clear all of the registered electrical key transmitter sub-assemblies except one and perform registration again.
Refer to Service Bulletin.
| Proceed to |
|---|
| NEXT |
NEXT
With all of the doors closed, lock the doors using the entry lock function.
Unlock the doors using the entry unlock function, open the driver door and check that the warning message is displayed on the multi-information display.
| Result | Proceed to |
|---|---|
| The warning message is displayed on the multi-information display. | A |
| The warning message is not displayed on the multi-information display. | B |
A
B