Lane Keeping Assist System (LKAS) Symptom Troubleshooting - LKAS activation indicator (on the MID) does not come on
LKAS activation indicator (on the MID) does not come on
1.
Gauge control module operation check:

Gauge control module operation check
?1.
Do the gauge control module self-diagnostic function.

Is the gauge control module OK?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
2.
ACC combination switch check:

ACC combination switch check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Test the ACC combination switch.

Is the switch OK?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
3.
Open wire check (CRUISE SW line):

Open wire check (CRUISE SW line)
?1.
Disconnect the following connector.
ACC combination switch 12P connector

?2.
Turn the vehicle to the ON mode.

?3.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
ACC combination switch 12P connector: disconnected
Test point 1
ACC combination switch 12P connector No. 6
Test point 2
Body ground


Is there about 5 V?

     
YES
     
     
     
Repair an open in the CRUISE GND wire between the ACC combination switch and the gauge control module.?
     
NO
     
     
     
Repair an open in the CRUISE SW wire between the ACC combination switch and the gauge control module.?