LaneWatch Symptom Troubleshooting - LaneWatch camera image does not come on (Switches to the black screen)

1.

LaneWatch camera check:

LaneWatch camera check

?1.	Start the engine.

?2.	Go into the System Diagnostic Mode, and select the Detail Information & Setting.

?3.	Select LaneWatch in the Unit Check.

Is Connection OK indicated?


	YES

Go to step 2.


	NO

Stop the engine, and go to step 7.

2.

B-CAN check:

B-CAN check

?1.	Select the Return, then back to Unit Check menu.

?2.	Select B-CAN in the Unit Check, then start diagnostic.

Is HLSW_ICU changed red?


	YES

Go to step 5.


	NO

Go to step 3.

3.

Open wire check (LWC CAM VID/LWC V DS AS line):

Open wire check (LWC CAM VID/LWC V DS AS line)

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

?2.

Disconnect the following connectors.

LaneWatch camera 6P connector

Audio-navigation unit connector C (24P)

?3.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	LaneWatch camera 6P connector: disconnected
	Audio-navigation unit connector C (24P): disconnected
Test point 1	LaneWatch camera 6P connector (female terminals) No. 4:
Test point 2	Audio-navigation unit connector C (24P) No. 20

Is there continuity?


	YES

The LWC CAM VID/LWC V DS AS wire is OK. Go to step 4.


	NO

Repair an open in the wire between the LaneWatch camera and the audio-navigation unit.?

4.

Open wire check (LWC CAM VGND/LWC VGND DA AS line):

Open wire check (LWC CAM VGND/LWC VGND DA AS line)

?1.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	LaneWatch camera 6P connector: disconnected
	Audio-navigation unit connector C (24P): disconnected
Test point 1	LaneWatch camera 6P connector (female terminals) No. 5:
Test point 2	Audio-navigation unit connector C (24P) No. 21

Is there continuity?


	YES

The LWC CAM VGND/LWC VGND DA AS wire is OK. Replace the LaneWatch camera.?


	NO

Repair an open in the wire between the LaneWatch camera and the audio-navigation unit.?

5.

Body electrical DTCs check:

Body electrical DTCs check

?1.	Clear the DTC with the HDS.

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

?3.	Turn the vehicle to the ON mode, and wait for at least 6 seconds.

?4.

Check for body electrical DTCs with the HDS.

DTC Description	DTC

Are any DTCs indicated?


	YES

Go to the indicated DTC's troubleshooting.?


	NO

Go to step 6.

6.

Open wire check (B-CAN_H line, B-CAN_L line):

Open wire check (B-CAN_H line, B-CAN_L line)

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

?2.

Disconnect the following connectors.

Under-dash fuse/relay box connector G (10P)

Audio-navigation unit connector A (24P)

?3.

Check for continuity between test points 1 and 2.

Test condition	Vehicle OFF (LOCK) mode
	Under-dash fuse/relay box connector G (10P): disconnected
	Audio-navigation unit connector A (24P): disconnected

B-CAN_H line

Test point 1	Under-dash fuse/relay box connector G (10P) (female terminals) No. 3:
Test point 2	Audio-navigation unit connector A (24P) No. 14

B-CAN_L line

Test point 1	Under-dash fuse/relay box connector G (10P) (female terminals) No. 4:
Test point 2	Audio-navigation unit connector A (24P) No. 24

Is there continuity?


	YES

Check for poor connections or loose terminals at the audio-navigation unit. If the symptom does not go away, replace the audio-navigation unit.?


	NO

Repair an open in the F-CAN B_H wire or the F-CAN B_L wire between the under-dash fuse/relay box and the audio-navigation unit.?

7.

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

Determine possible failure area (LWC CAM VCC/LWC VCC AS 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 (female terminals) No. 1:
Test point 2	Body ground

Is there about 8.0 V?


	YES

The LWC CAM VCC/LWC VCC AS wire is OK. Go to step 10.


	NO

Go to step 8.

8.

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

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

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

?2.

Disconnect the following connector.

Audio-navigation unit connector C (24P)

?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
	Audio-navigation unit connector C (24P): disconnected
Test point 1	Audio-navigation unit connector C (24P) No. 8
Test point 2	Body ground

Is there about 8.0 V?


	YES

Repair an open in the wire between the LaneWatch camera and the audio-navigation unit.?


	NO

Go to step 9.

9.

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

Shorted wire check (LWC CAM VCC/LWC VCC AS 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
	LaneWatch camera 6P connector: disconnected
	Audio-navigation unit connector C (24P): disconnected
Test point 1	Audio-navigation unit connector C (24P) No. 8
Test point 2	Body ground

Is there continuity?


	YES

Repair a short to body ground in the wire between the LaneWatch camera and the audio-navigation unit.?


	NO

Replace the audio-navigation unit.?

10.

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 connector.

Audio-navigation unit connector C (24P)

?3.

Check for continuity between test points 1 and 2.

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

Is there continuity?


	YES

Repair a short to body ground in the wire between the LaneWatch camera and the audio-navigation unit.?


	NO

Go to step 11.

11.

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

Is there continuity?


	YES

Replace the LaneWatch camera.?


	NO

Repair an open in the wire between the LaneWatch camera and the audio-navigation unit.?