Note
Initialize the AFS ECU (headlight swivel ECU assembly) when the AFS ECU (headlight swivel ECU assembly) is replaced.
If the vehicle is not equipped with air suspension system, initialize the AFS ECU (headlight swivel ECU assembly) (set the zero point of the height control sensor in the AFS ECU (headlight swivel ECU assembly)) after the vehicle height changes due to replacement of suspension components or after performing such operations as removal and reinstallation or replacement of the rear height control sensor sub-assembly RH.
If the vehicle is not equipped with air suspension system, adjust the headlight aim after initializing the AFS ECU (headlight swivel ECU assembly) Click here.
When a malfunction is detected in the automatic headlight beam level control system or AFS, height control sensor signal initialization is impossible. Perform troubleshooting before initialization.
CHECK VEHICLE CONDITION
Check the vehicle condition.
Result | ||||||
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B |
Go to step 7 |
A |
CHECK VEHICLE CONDITION
Check the vehicle condition.
Result | ||||||
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B |
Go to step 4 |
A |
SYNCHRONIZE VEHICLE INFORMATION
When using the intelligent tester:
Turn the engine switch off.
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG), and check that the AFS OFF indicator light continuously blinks at 0.5 Hz.
Enter the following menus: Main Body / AFS / Utility / ECU Information Sync / Next.
Check what is displayed on the screen of the intelligent tester and press "Next".
Check that the AFS OFF indicator light continuously blinks 6 times at 2 Hz.
Press "Exit" and turn the engine switch off.
When not using the intelligent tester:
Turn the engine switch on (IG), and check that the AFS OFF indicator light continuously blinks at 0.5 Hz.
Turn the low beam headlights on and off 8 times using the light control switch within 20 seconds after turning the engine switch on (IG).
Tech Tips
If the light control switch operation cannot be finished within 20 seconds, turn the engine switch off. Then, turn the engine switch on (IG) and restart again.
Note
Turn the low beam headlights on and off at less than 2-second intervals.
Check that the AFS OFF indicator light continuously blinks 6 times at 2 Hz.
Turn the engine switch off.
NEXT |
PREPARE VEHICLE FOR INITIALIZATION
Unload the trunk and vehicle, ensuring that the spare tire, tools and jack are in their original positions.
Check that there are no occupants in the vehicle.
Turn off the headlights.
Stop the vehicle on a level surface and keep the vehicle height unchanged.
NEXT |
CHECK AFS OFF INDICATOR LIGHT
Turn the engine switch on (IG), and check the indicator light.
OK | ||||||
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Tech Tips
If the indicator light does not come on when turning the engine switch on (IG), inspect and repair it according to Problem Symptoms Table Click here.
NG |
GO TO PROBLEM SYMPTOMS TABLE |
OK |
INITIALIZATION
Connect terminals 4 (CG) and 8 (LVL) of the DLC3 using SST.
Turn the low beam headlights on and off using the light control switch within 20 seconds after connecting the terminals.
Tech Tips
The number of times the low beam headlights need to be turned on and off is determined by the present fuel level as shown below.
Fuel Level | Number of Times to Turn Low Beam Headlights on and off |
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Fuel level is within A range. | 1 |
Fuel level is within B range. | 2 |
Fuel level is within C range. | 3 |
Fuel level is within D range. | 4 |
Fuel level is within E range. | 5 |
Note
Turn the low beam headlights on and off at less than 3-second intervals.
Be sure to operate the light control switch from outside the vehicle.
Check the AFS OFF indicator light.
OK | ||||||
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Tech Tips
*1: The number of times that the indicator blinks is determined by the number of times the low beam headlights are turned on and off.
If initialization cannot be finished normally, disconnect SST from the DLC3 and turn the engine switch off. Then, restart from procedure 1.
NG |
GO TO PROBLEM SYMPTOMS TABLE |
OK |
TURN ENGINE SWITCH OFF (END) |
SYNCHRONIZE VEHICLE INFORMATION
Tech Tips
If the AFS ECU (headlight swivel ECU assembly) is replaced with a new one, synchronize the vehicle information.
When using the intelligent tester:
Turn the engine switch off.
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG), and check that the AFS OFF indicator light continuously blinks at 0.5 Hz.
Enter the following menus: Main Body / AFS / Utility / ECU Information Sync / Next.
Check what is displayed on the screen of the intelligent tester and press "Next".
Press "Exit" and turn the engine switch off.
When not using the intelligent tester:
Turn the engine switch on (IG), and check that the AFS OFF indicator light continuously blinks at 0.5 Hz.
Turn the low beam headlights on and off 8 times using the light control switch within 20 seconds after turning the engine switch on (IG).
Tech Tips
If the light control switch operation cannot be finished within 20 seconds, turn the engine switch off. Then, turn the engine switch on (IG) and restart again.
Note
Turn the low beam headlights on and off at less than 2-second intervals.
Turn the engine switch off.
Tech Tips
After the initialization has been finished normally, the indicator light remains to blink until the engine switch off.
NEXT |
END |