Lane Keeping Assist System (LKAS) Symptom Troubleshooting - LKAS indicator (on the MID) does not go off (2016 2017 2018)

-1. Turn the vehicle to the ON mode.

-2. Check for DTCs with the HDS.

DTC (IDAS)

Are any DTCs indicated?

YES 

Go to the indicated DTC's troubleshooting .

NO 

Go to step 2.

-1. Check for DTCs with the HDS.

Is DTC U0029-00, U0047-00, and/or U3000-49 indicated?

YES 

Go to the indicated DTCs troubleshooting .

NO 

Go to step 3.

-1. Check for DTCs with the HDS.

Are any DTCs indicated?

YES 

Go to the indicated DTC's troubleshooting .

NO 

Go to step 4.

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

-2. Check the following fuse.

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. B7 (10 A) fuse circuit.

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

-2. Check the following fuse.

2/4-door: 

*1: Without keyless access system

*2: With keyless access system

5-door: 

Is the fuse OK?

YES 

The fuse is OK. Reinstall the fuse, then go to step 6.

NO 

2/4-door: 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. B17 (5 A) *1, No. B4 (5 A) *2 fuse circuit.

*1: Without keyless access system

*2: With keyless access system

5-door: 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 (10 A) fuse circuit.

-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 7.

NO 

Go to the gauge control module self-diagnostic function .

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

-2. Disconnect the following connector.

-3. Turn the vehicle to the ON mode.

-4. Measure the voltage between test points 1 and 2.

2/4-door: 

5-door: 

Is there battery voltage?

YES 

Go to step 8.

NO 

Repair an open in the IG1 OPTION3 (2/4-door) or IG1 OPTION (5-door) wire between the under-dash fuse/relay box and the multipurpose camera unit.

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

-2. Check for continuity between test points 1 and 2.

2/4-door: 

5-door: 

Is there continuity?

YES 

Go to step 9.

NO 

2/4-door: Repair an open in the GND wire between the multipurpose camera unit and body ground (G502), or repair poor ground (G502).

5-door: Repair an open in the GND wire between the millimeter wave radar and body ground (G401), or repair poor ground (G401).

-1. Reconnect the following connector.

-2. Turn the vehicle to the ON mode.

-3. Select the FUNCTION TEST in the CAN gateway with the HDS, then select the F-CAN Bus Connected Unit Check.

F-CAN Bus Connected Unit Check

Which result is indicated?

Gauge control module (Bus A) is Not Available

Go to step 10.

Multipurpose camera unit (Bus B) (2/4-door) or millimeter wave radar (Bus B) (5-door) is Not Available

Go to step 11.

Multipurpose camera unit (2/4-door) or millimeter wave radar (5-door) and gauge control module are Detected

Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting .

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

-2. Disconnect the following connectors.

-3. Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 12P connector: disconnected
	Gauge control module connector A (32P): disconnected
Test point 1	CAN gateway 12P connector (female terminals) No. 3:
Test point 2	Gauge control module connector A (32P) No. 19

Test point 1	CAN gateway 12P connector (female terminals) No. 9:
Test point 2	Gauge control module connector A (32P) No. 20

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES 

Check for loose terminals in the CAN gateway 12P connector and gauge control module connector A (32P). If they are OK, substitute a known-good gauge control module , then retest. If the indicators come on then go off after substitution, replace the original gauge control module .

NO 

Repair an open in the F-CAN A_H wire or the F-CAN A_L wire between the gauge control module and the CAN gateway.

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

-2. Disconnect the following connectors.

-3. Check for continuity between test points 1 and 2.

2/4-door: 

	Multipurpose camera unit 20P connector: disconnected
Test point 1	CAN gateway 12P connector (female terminals) No. 12:
Test point 2	Multipurpose camera unit 20P connector No. 2

Test point 1	CAN gateway 12P connector (female terminals) No. 5:
Test point 2	Multipurpose camera unit 20P connector No. 13

5-door: 

Test condition	Vehicle OFF (LOCK) mode
	CAN gateway 12P connector: disconnected
	Millimeter wave radar 8P connector: disconnected
Test point 1	CAN gateway 12P connector (female terminals) No. 12:
Test point 2	Millimeter wave radar 8P connector No. 7

Test point 1	CAN gateway 12P connector (female terminals) No. 5:
Test point 2	Millimeter wave radar 8P connector No. 6

Courtesy of HONDA, U.S.A., INC.

Is there continuity?

YES 

Check for loose terminals and poor connections in the multipurpose camera unit 20P connector (2/4-door) or millimeter wave radar 8P connector (5-door). Check for any authorized service information related to the DTCs or symptoms you are troubleshooting. If they are OK, replace the multipurpose camera unit (2/4-door) or millimeter wave radar (5-door) .

NO 

Repair an open in the F-CAN B_H wire or the F-CAN B_L wire between the multipurpose camera unit (2/4-door) or millimeter wave radar (5-door) and the CAN gateway.