Audio System DTC Troubleshooting: 2618

DTC 2618: LaneWatch Diag

NOTE:

	Check the vehicle 12 volt battery condition first.
	This audio 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 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.

?3.	Wait for at least 6 seconds.

?4.	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.?

Determine possible failure area (LWC CAM VCC/LWC VCC line, others):

Determine possible failure area (LWC CAM VCC/LWC VCC line, others)

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

?2.

Disconnect the following connector.

LaneWatch camera 6P connector

?3.	Turn the vehicle to the ON mode.

?4.

Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
	LaneWatch camera 6P connector: disconnected
Test point 1	LaneWatch camera 6P connector No. 6
Test point 2	Body ground

Is there about 8.0 V?


	YES

The LWC CAM VCC/LWC VCC wire is OK. Go to step 5.


	NO

Go to step 3.

Open wire check (LWC CAM VCC/LWC VCC line):

Open wire check (LWC CAM VCC/LWC VCC line)

?1.

Measure the voltage between test points 1 and 2.

Test condition	Vehicle ON mode
	LaneWatch camera 6P connector: disconnected
Test point 1	Audio unit connector B (24P) No. 8
Test point 2	Body ground

Is there about 8.0 V?


	YES

There is an open in the wire between the audio unit and the LaneWatch camera. Replace the affected shielded harness.?


	NO

The LWC CAM VCC/LWC VCC wire is not open. Go to step 4.

Shorted wire check (LWC CAM VCC/LWC VCC line):

Shorted wire check (LWC CAM VCC/LWC VCC line)

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

?2.

Disconnect the following connector.

Audio unit connector B (24P)

?3.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	LaneWatch camera 6P connector: disconnected
	Audio unit connector B (24P): disconnected
Test point 1	Audio unit connector B (24P) No. 8
Test point 2	Body ground

Is there continuity?


	YES

There is a short to body ground in the wire between the audio unit and the LaneWatch camera. Replace the affected shielded harness.?


	NO

Replace the audio unit.?

Determine possible failure area (SH LWC CAM/LWC SH line, others):

Determine possible failure area (SH LWC CAM/LWC SH line, others)

?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
	LaneWatch camera 6P connector: disconnected
Test point 1	LaneWatch camera 6P connector No.1
Test point 2	Body ground

Is there continuity?


	YES

The SH LWC CAM/LWC SH wire is OK. Go to step 7.


	NO

Go to step 6.

Open wire check (SH LWC CAM/LWC SH line):

Open wire check (SH LWC CAM/LWC SH line)

?1.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	LaneWatch camera 6P connector: disconnected
Test point 1	Audio unit connector B (24P) No. 9
Test point 2	Body ground

Is there continuity?


	YES

There is an open in the wire(s) between the audio unit and the LaneWatch camera. Replace the affected shielded harness.?


	NO

Replace the audio unit.?

Shorted wire check (UNIT TO LWC line, LWC TO UNIT line):

Shorted wire check (UNIT TO LWC line, LWC TO UNIT line)

?1.

Disconnect the following connector.

Audio unit connector B (24P)

?2.

Check for continuity between test points 1 and 2.

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

Test point 1	Audio unit connector B (24P) No. 23
Test point 2	Body ground

Is there continuity?


	YES

There is a short to body ground in the wire(s) between the audio unit and the LaneWatch camera. Replace the affected shielded harness.?


	NO

The UNIT TO LWC and the LWC TO UNIT wires are not shorted to ground. Go to step 8.

Shorted wire check (UNIT TO LWC line to LWC TO UNIT line):

Shorted wire check (UNIT TO LWC line to LWC TO UNIT line)

?1.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	LaneWatch camera 6P connector: disconnected
	Audio unit connector B (24P): disconnected
Test point 1	Audio unit connector B (24P) No. 22
Test point 2	Audio unit connector B (24P) No. 23

Is there continuity?


	YES

There is a short in the wires between the audio unit and the LaneWatch camera. Replace the affected shielded harness.?


	NO

The UNIT TO LWC and the LWC TO UNIT wires are not shorted. Go to step 9.

Open wire check (UNIT TO LWC line, LWC TO UNIT line):

Open wire check (UNIT TO LWC line, LWC TO UNIT line)

?1.

Check for continuity between test points 1 and 2.

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

Test point 1	Audio unit connector B (24P) No. 23
Test point 2	LaneWatch camera 6P connector No. 5

Is there continuity?


	YES

Replace the LaneWatch camera.?


	NO

There is an open in the wire(s) between the audio unit and the LaneWatch camera. Replace the affected shielded harness.?