Diagnosis System [12/2013 - 11/2016]

DESCRIPTION
Automatic high beam system data and Diagnostic Trouble Codes (DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and to repair it.
CHECK DLC3
Check the DLC3.

Refer to GENERAL INFORMATION [12/2013 - ]
INSPECT BATTERY VOLTAGE
Measure the battery voltage.

Standard Voltage

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery.

DIAGNOSIS SYSTEM

If the automatic high beam system malfunctions, the automatic high beam indicator light turns off and "Check Headlight System" is displayed on the multi-information display.

Fig 1: Automatic High Beam Indicator Light & AHB System Malfunction Messages

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*A	Multi-information Display (for Monochrome Type)	*B	Multi-information Display (for Color Type)
*a	Automatic High Beam Indicator Light	-	-

HINT:

In this case, the main body ECU (multiplex network body ECU) stores DTCs.
Refer to DTC CHECK / CLEAR [12/2013 - ]
When the system returns to normal, "Check Headlight System" is no longer displayed on the multi-information display.