Main Switch Circuit

CRUISE CONTROL: LANE-KEEPING ASSIST SYSTEM: Main Switch Circuit
- Main Switch Circuit

DESCRIPTION

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

* 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. READ VALUE USING TECHSTREAM

(a) Use the Data List to check if the lane-keeping assist main switch is functioning properly Scan Tool Testing and Procedures.

Steering Pad Switch





OK:

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

NG -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures
OK -- Continue to next step.

2. READ VALUE USING TECHSTREAM

(a) Use the Data List to check if the lane-keeping assist main switch is functioning properly Scan Tool Testing and Procedures.

Radar Cruise





OK:

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

NG -- REPLACE STEERING PAD SWITCH ASSEMBLY WITH MODULATOR Disassembly

OK -- REPLACE DRIVING SUPPORT ECU Removal