Audio-Navigation System DTC Troubleshooting: 2618

DTC 2618: LaneWatch Diag

NOTE:

	Check the vehicle 12 volt battery condition first.
	This navigation DTC sets when Connection NG is indicated in the LaneWatch diagnosis (the LaneWatch icon is red in the System Links).
	Before you troubleshoot, make sure to follow the General Troubleshooting Information.
	Check any official Honda service website for more service information about the navigation system.
	Check the connectors for poor connections or loose terminals.

Problem verification:

Problem verification

?1.	Clear the hard error codes.

?2.	Turn the vehicle to the OFF (LOCK) mode then the ON mode.

?3.	Check for hard error codes.

Is DTC 2618 indicated?


	YES

The failure is duplicated, go to step 2.


	NO

Intermittent failure, the system is OK at this time.?

Shorted wire check (LWC UART/LWC UART AS line):

Shorted wire check (LWC UART/LWC UART AS line)

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

?2.

Disconnect the following connectors.

Audio-navigation unit connector C (24P)

LaneWatch camera 6P connector

?3.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio-navigation unit connector C (24P): disconnected
	LaneWatch camera 6P connector: disconnected
Test point 1	Audio-navigation unit connector C (24P) No. 22
Test point 2	Body ground

Is there continuity?


	YES

There is a short to body ground in the wire. Replace the affected shielded harness.?


	NO

The LWC UART/LWC UART AS wire is not shorted to ground. Go to step 3.

Shorted wire check (LWC UART/LWC UART AS line to another lines):

Shorted wire check (LWC UART/LWC UART AS line to another lines)

?1.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio-navigation unit connector C (24P): disconnected
	LaneWatch camera 6P connector: disconnected

Test point 1: Audio-navigation unit connector C (24P)	Test point 2: Audio-navigation unit connector C (24P)
No. 22	No. 8, No. 9, No. 20, No. 21

Is there continuity between any of the terminals?


	YES

There is a short in the wires. Replace the affected shielded harness.?


	NO

The LWC UART/LWC UART AS wire is not shorted. Go to step 4.

Open wire check (LWC UART/LWC UART AS line):

Open wire check (LWC UART/LWC UART AS line)

?1.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Audio-navigation unit connector C (24P): disconnected
	LaneWatch camera 6P connector: disconnected
Test point 1	Audio-navigation unit connector C (24P) No. 22
Test point 2	LaneWatch camera 6P connector No. 6 (female terminals):

Is there continuity?


	YES

There is an open in the wire. Replace the affected shielded harness.?


	NO

The LWC UART/LWC UART AS wire is OK. Go to step 5.

LaneWatch camera check:

LaneWatch camera check

?1.	Reconnect audio-navigation unit connector C (24P).

?2.	Substitute a known-good LaneWatch camera.

?3.	Clear the hard error codes.

?4.	Turn the vehicle to the OFF (LOCK) mode then the ON mode.

?5.	Check for hard error codes.

Is DTC 2618 indicated?


	YES

Replace the audio-navigation unit.?


	NO

Replace the original LaneWatch camera.?