Lane Keeping Assist System (LKAS) Symptom Troubleshooting - LKAS indicator (on the MID) does not come on

*1: Without auto idle stop system
*2: With auto idle stop system

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

Check the following indicators in the gauge control module:
- Malfunction indicator lamp (MIL)
- Brake system indicator
- 12 volt charging system indicator
Do the indicators come on?

YES

Go to the gauge control module self-diagnostic function .

NO

Go to step 2.

Fuse check

-1. Turn the vehicle to the OFF (LOCK) mode.

-2. Check the following fuse.

Fuse	No. D7 (10 A) 1No. F6 (5 A) 2
Location	Under-dash fuse/relay box 1Auxiliary under-dash fuse/relay box 2

Is the fuse OK?

YES

The fuse is OK. Reinstall the fuse, then go to step 3.

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. D7 (10 A) *1/F6 (5 A) *2 fuse circuit.

Open wire check (IG1 METER *1/IG1 VST *2 line):-1.

Disconnect the following connector.

Gauge control module connector A (32P)

-2. Turn the vehicle to the ON mode.

-3. Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
	Gauge control module connector A (32P): disconnected
Test point 1	Gauge control module connector A (32P) No. 17
Test point 2	Body ground

Is there battery voltage?

YES

Replace the gauge control module .

Repair an open in the IG1 METER *1/IG1 VST *2 wire between the under-dash fuse/relay box *1/auxiliary under-dash fuse/relay box *2 and the gauge control module.