CAUTION / NOTICE / HINT
Note
The necessary procedures (adjustment, calibration, registration) that must be performed after parts are removed and installed, or replaced during No. 1 headlight ECU sub-assembly LH removal/installation are shown below.
| Performed Work or System Condition | Necessary Procedures | Proceed to |
|---|---|---|
| Replacement of the No. 1 headlight ECU sub-assembly LH | Synchronize the vehicle information | SYNCHRONIZE VEHICLE INFORMATION |
| Battery terminal is disconnected and connected. | Steering sensor zero point calibration |
A new No. 1 headlight ECU sub-assembly LH cannot operate until vehicle information synchronization has been performed.
After replacing the No. 1 headlight ECU sub-assembly LH, it is necessary to synchronize the vehicle information.
Even if the No. 1 headlight ECU sub-assembly RH is replaced with a new one, vehicle information synchronization is not necessary.
PROCEDURE
SYNCHRONIZE VEHICLE INFORMATION
When using the GTS:
Turn the engine switch off.
Connect the GTS to the DLC3.
Turn the engine switch on (IG) and check that "Headlight System Uninitialized Visit Your Dealer" warning message is displayed on the multi-information display.
Enter the following menus: Body Electrical / HL AutoLeveling / Utility / ECU Information Sync.
| Tester Display |
|---|
| ECU Information Sync |
Check the display on the GTS and press "Next".
Check that the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display continuously blinks 6 times at 2 Hz.
Press "Exit" and turn the engine switch off.
Tech Tips
If the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display does not start blinking after performing step (v), perform the procedure again.
If the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display changes from blinking to illuminated, the rear height control sensor sub-assembly LH may be malfunctioning.
When not using the GTS:
Turn the engine switch on (IG) and check that "Headlight System Uninitialized Visit Your Dealer" warning message is displayed on the multi-information display.
Using the light control switch, turn the low beam headlights on and off 8 times within 20 seconds after turning the engine switch on (IG).
Note
If the low beam headlights illuminate when the engine switch is on (IG), shine a light on the automatic light control sensor to turn the low beam headlights off before operating the light control switch. (w/o Light Control Switch off Position)
Tech Tips
If this step cannot be completed within 20 seconds, turn the engine switch off. Then, turn the engine switch on (IG) and restart the procedure.
Check that the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display continuously blinks 6 times at 2 Hz.
Tech Tips
If the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display does not start blinking after performing step (ii), perform the procedure again.
If the "Headlight System Malfunction Visit Your Dealer" warning message on the multi-information display changes from blinking to illuminated, turn the engine switch off and then on (IG). If the "Headlight System Malfunction Visit Your Dealer" warning message is displayed 5 seconds or more after the engine switch was turned on (IG), the rear height control sensor sub-assembly LH may be malfunctioning.
Turn the engine switch off.