How to Troubleshoot the Auto High-Beam (High-Beam Support System)

Auto High-Beam Activation Indicator (Green)

If the Auto High-Beam system is normal, the Auto High-Beam activation indicator comes on when the function is on, and goes off when the function is off. If the system malfunctions, turns off the Auto High-Beam activation indicator, indicates the problem on the multi-information display (MID).

NOTE:

	For locations of each indicator, refer to gauge control module component location index.
	For Auto High-Beam function, review the Auto High-Beam Description.
	The Auto High-Beam communicates with other control units via F-CAN. For Auto High-Beam system diagram, review the Auto High-Beam System Diagram.

Self-Diagnostic Function

The Auto High-Beam system has a self-diagnostic function. When a problem is detected by the self-diagnostic function, the Auto High-Beam stops operating, indicates the problem on the multi-information display (MID), and stores a DTC.

NOTE: The Auto High-Beam operates while maintaining a mutual connection between the multipurpose camera unit at the control origin and the other control units (relay control module, body control unit, gauge control module, automatic lighting/rain sensor, etc.). If malfunctions occur in these control unit systems, the Auto High-Beam does not operate. At this time, warning indicator of the related control unit turn on and a warning message is displayed on the multi-information display (MID).

Dirt or Dust Detective Function (CLEAN WINDSHIELD Indication)

If the message Auto High-Beam Cannot Operate: Clean Windshield appears on the MID, the camera lens or the windshield has enough dirt so that the camera view is obstructed. The Auto High-Beam stops operating.

Clean any dirt or contamination on the camera lens or the windshield. Once the camera's view is unobstructed, the MID turns off and the Auto High-Beam automatically turns back to ON.

Multipurpose Camera Unit

The Auto High-Beam of this vehicle is controlled by the multipurpose camera unit. If an error or malfunction of the multipurpose camera unit occurs, the Auto High-Beam does not operate. At this time, a warning message is displayed on the MID. The operations of the Auto High-Beam corresponding to the multipurpose camera unit malfunctions can be checked in the troubleshooting list by each DTC for the multipurpose camera unit.

System Protect Function (High Temperature) (MULTIPURPOSE CAMERA HOT Indication)

If the message Some Driver Assist Systems Cannot Operate: Camera Temperature Too High appears on the MID, the Auto High-Beam stops operating, and stores a DTC.

When the multipurpose camera unit temperature cools down to its proper operating temperature, the indicator on the MID turns off, and the Auto High-Beam automatically resumes operation.

Multipurpose Camera Aiming Function

If the multipurpose camera unit is removed or replaced, you must do the multipurpose camera aiming procedure.

CAN Communication

The Auto High-Beam communicates with other control units via the F-CAN and B-CAN. For Auto High-Beam diagram, review the Auto High-Beam Diagram.

If the multipurpose camera unit detects a communication error or a malfunction in another connected unit, the Auto High-Beam will not operate even though it is OK. In this case, both the Auto High-Beam indicator and the related unit indicator will come on and stay on.

Intermittent Failures

The term ''intermittent failure'' means a system may have had a failure, but it checks OK now. If you cannot reproduce the condition, check for intermittent failure DTCs and freeze data. If intermittent failure DTCs are not stored, check for loose connections and terminals. Also check ground and power connections related to the circuit that you are troubleshooting.

How to Troubleshoot DTCs

Check for DTCs with the HDS. Make a copy of the freeze data, then clear the DTC.

NOTE: When the DTC is cleared with the HDS, the freeze data is cleared at the same time.

Before troubleshooting, check and note these items:

	Ask the customer about the conditions when the problem occurred, and try to reproduce the same conditions for troubleshooting.
	If the symptom does not appear and the Auto High-Beam indicator does not come on while test-driving, but your troubleshooting was based on the DTC, check for poor connections or loose terminals at all connectors related to the circuit that you are troubleshooting.
	After the troubleshooting or repairs are done, clear the DTCs, and test-drive the vehicle under the same conditions as when the DTC was originally set. Make sure the Auto High-Beam warning message does not come on.
	The Auto High-Beam sometimes stops operating because of the environment (weather, road conditions, driving conditions, etc.). An intermittent failure DTCs.

How to Retrieve DTCs

NOTE:

	Make sure the 12 volt battery is fully charged before you begin.
	The Auto High-Beam of this vehicle is controlled by the multipurpose camera unit. For this reason, the Auto High-Beam may not operate normally depending on the malfunction status of the multipurpose camera unit. The operations of the Auto High-Beam related to the multipurpose camera unit malfunctions can be checked in the troubleshooting list by DTC for the multipurpose camera unit.

1.	Turn the vehicle to the ON mode.

2.	Connect the HDS to the DLC (A) located under the driver's side of the dashboard.

3.	Make sure the HDS communicates with the vehicle and the multipurpose camera unit. If it does not, go to the DLC circuit troubleshooting.

4.	Use the HDS to check for Integrated Driver Support system DTCs.

Read and record the DTC.

	Freeze data indicates the Auto High-Beam conditions when the first system malfunction that activated the indicator was detected.
	The HDS can read the DTC, the freeze data, the current data, and other system data.

6.	Turn the vehicle to the OFF (LOCK) mode.

7.	Disconnect the HDS.

8.	Do the troubleshooting procedure for the DTC.

How to Clear DTCs

NOTE: Make sure the 12 volt battery is fully charged before you begin.

1.	Turn the vehicle to the ON mode.

2.	Connect the HDS to the DLC (A) located under the driver's side of the dashboard.

3.	Make sure the HDS communicates with the vehicle and the multipurpose camera unit. If it does not, go to the DLC circuit troubleshooting.

4.	Clear the DTC(s) by following the screen prompts on the HDS.

5.	Turn the vehicle to the OFF (LOCK) mode.

6.	Disconnect the HDS.