LANE-KEEPING ASSIST SYSTEM Indicator Circuit

DESCRIPTION

• When the driving support ECU detects a lane-keeping assist main switch signal, it sends the signal to the No. 1 meter ECU sub-assembly through CAN communication. Then the LKA indicator light turns on.

• The LKA indicator light circuit uses CAN communication. If there is a malfunction in this circuit, check for DTCs in the CAN communication system before troubleshooting this circuit.

PROCEDURE

1. PERFORM ACTIVE TEST USING INTELLIGENT TESTER (LKA INDICATOR LIGHT)

   
   

   1. Select the item below in the Active Test, and then check that the LKA indicator light illuminates Click here.

      Combination Meter

      Tester Display	Test Part	Control Range	Diagnostic Note
      Drift From The Lane	LKA indicator light	ON/OFF	-

      OK
      LKA indicator light turns on / turns off.

   
   

   NG

   REPLACE NO. 1 METER ECU SUB-ASSEMBLY Click here

   OK

2. READ VALUE USING INTELLIGENT TESTER (LKA INDICATOR LIGHT)

   
   

   1. Use the Data List to check if the LKA indicator light is functioning properly Click here.

      Lane Keep Assist

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      LKA Indicator	LKA indicator light signal/Nothing, Light or Blink	Light: LKA indicator light turns on Nothing: LKA indicator light turns off Blink: LKA indicator light blinking	-

      OK
      LKA indicator light turns on, turns off or blink.

   
   

   OK

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

   NG

   REPLACE DRIVING SUPPORT ECU Click here