ADAPTIVE HIGH BEAM SYSTEM TERMINALS OF ECU

CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

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CHECK HEADLIGHT CONTROL COMPUTER ASSEMBLY LH

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CHECK HEADLIGHT CONTROL COMPUTER ASSEMBLY RH

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CHECK HEADLIGHT LIGHT CONTROL ECU SUB-ASSEMBLY

1. Measure the voltage, resistance and check for pulses according to the value(s) in the table below.

   Tech Tips

   Since the headlight light control ECU sub-assembly is connected inside the headlight assembly, the voltage, resistance and pulses cannot be checked directly. The values listed are for reference only.

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   K-1(LG) - Body ground	-	Ground	Always	Below 1 Ω
   K-2(AR01) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-2(AR02) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manuallyEngine switch on (IG) and high beams operated manually	Pulse generation
   K-5(FH) - K-6(FL)	-	LED array fan power source	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	4.75 to 5.25 V
   K-7(FG) - K-6(FL)	-	LED array fan control signal	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-9(LIN) - Body ground	-	LIN communication	Engine switch on (IG)	Pulse generation
   K-10(LB) - Body ground	-	Power source	Engine switch off	Below 1 V
   			Engine switch on (IG)	11 to 14 V
   K-11(AR03) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-12(AR04) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-13(AR05) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-14(AR06) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-15(AR07) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-16(AR08) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-17(AR09) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-18(AR10) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation
   K-19(AR11) - K-20(AR12)	-	LED array output	Engine switch off	Below 1 V
   			Engine switch on (IG) and high beams operated manually	Pulse generation