LANE-KEEPING ASSIST SYSTEM Main Switch Circuit

DESCRIPTION

• The driving support ECU receives lane-keeping assist main switch ON/OFF signal from the steering pad switch assembly.

• The lane-keeping assist main switch circuit uses CAN communication. If there is a malfunction in this circuit, check for DTCs in the CAN communication system before troubleshooting this circuit.

INSPECTION PROCEDURE

PROCEDURE

1. Click here

   READ VALUE USING INTELLIGENT TESTER (LANE KEEPING ASSIST MAIN SWITCH)

   
   

   1. Use the Data List to check if the lane-keeping assist main switch is functioning properly (Click here).

      Table 1. Steering Pad Switch

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      Lane Keep Assist SW	Lane-keeping assist main switch signal / ON or OFF	ON: Lane-keeping assist main switch is ON OFF: Lane-keeping assist main switch is OFF	-

      OK
      Display changes according to lane-keeping assist main switch described in above table.

   
   
   • OKClick here
   • NGClick here
2. Click here

   READ VALUE USING INTELLIGENT TESTER (LANE KEEPING ASSIST MAIN SWITCH)

   
   

   1. Use the Data List to check if the lane-keeping assist main switch is functioning properly (Click here).

      Table 2. Radar Cruise

      Tester Display	Measurement Item/Range	Normal Condition	Diagnostic Note
      LKA Main SW	Lane-keeping assist main switch signal/ON or OFF	ON: Lane-keeping assist main switch is on ON: Lane-keeping assist main switch is off	-

      OK
      Display changes according to lane-keeping assist main switch described in above table.

   
   
   • OKClick here
   • NGClick here
3. Click here

   PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

4. Click here

   REPLACE DRIVING SUPPORT ECUClick here

5. Click here

   REPLACE STEERING PAD SWITCH ASSEMBLYClick here