HS 250h L4-2.4L (2AZ-FXE) Hybrid (2010)
CRUISE CONTROL: LANE-KEEPING ASSIST SYSTEM: Indicator Circuit
- Indicator Circuit
DESCRIPTION
*
When the driving support ECU detects a lane-keeping assist main switch signal, it sends the signal to the combination meter via 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.
INSPECTION PROCEDURE
PROCEDURE
1. PERFORM ACTIVE TEST USING TECHSTREAM (LKA INDICATOR LIGHT)
(a) Select the Active Test, use the Techstream to generate a control command, and then check that the LKA indicator light illuminates.
Combination Meter
OK:
LKA indicator light turns on / turns off.
NG -- REPLACE COMBINATION METER ASSEMBLY See: Instrument Panel, Gauges and Warning Indicators/Instrument Cluster
/ Carrier/Service and Repair/Removal and Replacement/Combination Meter/Removal
OK -- Continue to next step.
2. READ VALUE USING TECHSTREAM (LKA INDICATOR LIGHT)
(a) Using the Techstream, enter the following menus: All ECUs / Lane Keeping Assist / Data List / LKA Indicator.
(b) Check the Data List for proper functioning of the LKA indicator light.
Lane Keeping Assist
OK:
LKA indicator light turns on / turns off.
NG -- REPLACE DRIVING SUPPORT ECU See: Cruise Control/Cruise Control Module/Service and Repair/Removal
OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE See: Symptom Related
Diagnostic Procedures
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 assembly.
WIRING DIAGRAM