Lane Keeping Assist System (LKAS) Symptom Troubleshooting - LKAS indicator (on the MID) does not go off
LKAS indicator (on the MID) does not go off
1.
DTCs check:

DTCs check
?1.
Turn the vehicle to the ON mode.

?2.
Check for DTCs with the HDS.
DTC Description
DTC
   


Are any DTCs indicated?

     
YES
     
     
     
     
NO
     
     
     
Go to step 2.
2.
CAN gateway system DTC check:

CAN gateway system DTC check
?1.
Check for DTCs with the HDS.
DTC Description
DTC
   

Are any DTCs indicated?

     
YES
     
     
     
     
NO
     
     
     
Go to step 3.
3.
EPS DTC check:

EPS DTC check
?1.
Check for DTCs with the HDS.
DTC Description
DTC
   

Are any DTCs indicated?

     
YES
     
     
     
     
NO
     
     
     
Go to step 4.
4.
Fuse check:

Fuse check
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check the following fuse.
Fuse
No. B5

Is the fuse OK?

     
YES
     
     
     
The fuse is OK. Reinstall the fuse, then go to step 5.
     
NO
     
     
     
Replace the fuse. Turn the vehicle to the ON mode, then the OFF (LOCK) mode. If the fuse blows again, repair the short to ground on the No. B5 fuse circuit.?
5.
Gauge control module operation check:

Gauge control module operation check
?1.
Turn the vehicle to the ON mode.

?2.
Check the indicator in the gauge control module.

Do the indicators come on?

     
YES
     
     
     
Go to step 6.
     
NO
     
     
     
6.
Open wire check (IG1 OPTION line):

Open wire check (IG1 OPTION line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.
Millimeter wave radar 8P connector

?3.
Turn the vehicle to the ON mode.

?4.
Measure the voltage between test points 1 and 2.
Test condition
Vehicle ON mode
 
Millimeter wave radar 8P connector: disconnected
Test point 1
Millimeter wave radar 8P connector No. 1
Test point 2
Body ground

Is there battery voltage?

     
YES
     
     
     
Go to step 7.
     
NO
     
     
     
Repair an open in the IG1 OPTION wire between the under-dash fuse/relay box and the millimeter wave radar.?
7.
Open wire check (GND line):

Open wire check (GND line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Millimeter wave radar 8P connector: disconnected
Test point 1
Millimeter wave radar 8P connector No. 8
Test point 2
Body ground

Is there continuity?

     
YES
     
     
     
Check for poor connections or loose terminals at the millimeter wave radar. Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the millimeter wave radar.?
     
NO
     
     
     
Repair an open in the GND wire between the millimeter wave radar and body ground (G401), or repair poor ground (G401).?