DESCRIPTION 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). CAUTION / NOTICE / HINT
NOTICE:
- The smart key system (for Start Function, Gasoline Model) uses the LIN
communication system and CAN communication system. Inspect the
communication function by following How to Proceed with Troubleshooting.
Troubleshoot the smart key system (for Start Function, Gasoline Model)
after confirming that the communication systems are functioning
properly.
Click here 
- When using the Techstream with the engine switch off, connect the
Techstream to the DLC3 and turn a courtesy light switch on and off at
intervals of 1.5 seconds or less until communication between the
Techstream and the vehicle begins. Then select the vehicle type under
manual mode and enter the following menus: Body Electrical / Smart Key.
While using the Techstream, periodically turn a courtesy light switch on
and off at intervals of 1.5 seconds or less to maintain communication
between the Techstream and the vehicle.
- Before replacing the certification ECU (smart key ECU assembly), refer to Registration.
Click here
- After repair, confirm that no DTCs are output.
- Check that there are no electrical key transmitter sub-assemblies in the vehicle.
PROCEDURE (a) Check for DTCs. Body Electrical > Smart Key > Trouble Codes
|
Result | Proceed to | |
DTCs are not output | A | |
DTCs are output | B |
| B |
 | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
A |
 | |
| 2. |
READ VALUE USING TECHSTREAM (FL DOOR COURTESY SW) |
(a) Connect the Techstream to the DLC3. (b) Turn the engine switch on (IG).
(c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Main Body / Data List.
(e) Read the Data List according to the display on the Techstream. Body Electrical > Main Body > Data List
|
Tester Display | Measurement Item |
Range | Normal Condition |
Diagnostic Note | |
FL Door Courtesy SW | Front door LH courtesy light switch signal |
OFF or ON | OFF: Front door LH closed
ON: Front door LH open |
- | Body Electrical > Main Body > Data List
|
Tester Display | | FL Door Courtesy SW |
|
Result | Proceed to | |
On the Techstream screen, ON or OFF is displayed accordingly. |
A | | On the Techstream screen, ON or OFF is not displayed accordingly. |
B |
| B |
| GO TO LIGHTING SYSTEM |
|
A | |
| |
| 3. |
CHECK METER / GAUGE SYSTEM | (a)
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. |
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 |
| B |
| GO TO METER / GAUGE SYSTEM |
|
A | |
| |
| 4. |
ADDITIONAL KEY REGISTRATION | (a) Clear all of the registered electrical key transmitter sub-assemblies except one and perform registration again.
Click here
|
NEXT | |
| |
| 5. |
CHECK MULTI-INFORMATION DISPLAY | (a) With all of the doors closed, lock the doors using the entry lock function.
(b)
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 |
| END (10 DAYS MAY HAVE ELAPSED SINCE AN ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY WAS REGISTERED) |
| B |
| REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) | | 
