LaneWatch Symptom Troubleshooting - LaneWatch camera image does not come on (Switches to the black screen)
LaneWatch camera image does not come on (Switches to the black screen)
1.
LaneWatch system check (audio/navigation system diagnostic mode):

LaneWatch system check (audio/navigation system diagnostic mode)
?1.
Turn the vehicle to the ON mode.

?2.
Go into the system diagnostic mode, and select the Detail Information & Setting.

?3.
Select the Functional Setup icon.

?4.
Select the LaneWatch icon.

Is "Connection OK" indicated?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
Check for hard error codes (audio/navigation DTCs).?
2.
Determine possible failure area (LWC CAM VID/LWC V DA AS line, LWC CAM VGND/LWC VGND DA AS line, LaneWatch camera, others):

Determine possible failure area (LWC CAM VID/LWC V DA AS line, LWC CAM VGND/LWC VGND DA AS line, LaneWatch camera, others)s)
?1.
Start the engine.

?2.
Check the B-CAN status.

Is "B-CAN OK" indicated?

     
YES
     
     
     
Go to step 3.
     
NO
     
     
     
Go to step 5.
3.
Open wire check (LWC CAM VID/LWC V DA AS line):

Open wire check (LWC CAM VID/LWC V DA AS line)
?1.
Stop the engine.

?2.
Disconnect the following connectors.
LaneWatch camera 6P connector
Audio unit or audio-navigation 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 or audio-navigation unit connector B (24P): disconnected
Test point 1
LaneWatch camera 6P connector (female terminals) No. 4:
Test point 2
Audio unit or audio-navigation unit connector B (24P) No. 20


Is there continuity?

     
YES
     
     
     
Go to step 4.
     
NO
     
     
     
Repair an open in the LWC CAM VID/LWC V DA AS wire between the LaneWatch camera and the audio unit or 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 unit or audio-navigation unit connector B (24P): disconnected
Test point 1
LaneWatch camera 6P connector (female terminals) No. 5:
Test point 2
Audio unit or audio-navigation unit connector B (24P) No. 21


Is there continuity?

     
YES
     
     
     
     
NO
     
     
     
Repair an open in the LWC CAM VGND/LWC VGND DA AS wire between the LaneWatch camera and the audio unit or the audio-navigation unit.?
5.
Body electrical DTC check:

Body electrical DTC check
?1.
Stop the engine.

?2.
Turn the vehicle to the ON mode.

?3.
Check for DTCs with the HDS.
DTC Description
DTC
   

Are any DTCs indicated?

     
YES
     
     
     
     
NO
     
     
     
Go to step 6.
6.
Open wire check (B-CAN_H, B-CAN_L line):

Open wire check (B-CAN_H, B-CAN_L line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connectors.
Body control module connector B (36P)
Audio unit or audio-navigation unit connector A (24P)

?3.
Check for continuity between test points 1 and 2.
Test condition
Vehicle OFF (LOCK) mode
 
Body control module connector B (36P): disconnected
 
Audio unit or audio-navigation unit connector A (24P): disconnected
Test point 1
Body control module connector B (36P) No. 20
Test point 2
Audio unit or audio-navigation unit connector A (24P) No. 14

Test point 1
Body control module connector B (36P) No. 21
Test point 2
Audio unit or audio-navigation unit connector A (24P) No. 24

Is there continuity?

     
YES
     
     
     
Check for poor connection or loose terminal at the audio unit or the audio-navigation unit. If the symptom does not go away, replace the audio unit or the audio-navigation unit.?
     
NO
     
     
     
Repair an open in the B-CAN_H wire or the B-CAN_L wire between the body control module and the audio unit or the audio-navigation unit.?