LaneWatch Symptom Troubleshooting - Does not switch to the Lanewatch screen
Does not switch to the LaneWatch screen
1.
LaneWatch camera check:

LaneWatch camera check
?1.
Turn the vehicle to the ON mode.

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

?3.
Select LaneWatch in the Unit Check.

Is Connection OK?

     
YES
     
     
     
Go to step 2.
     
NO
     
     
     
Go to step 5.
2.
LaneWatch switch check:

LaneWatch switch check
?1.
Select Return, then select LaneWatch in the Functional Setup.

?2.
Operate the LaneWatch switch.

Is the LaneWatch switch status changed?

     
YES
     
     
     
Intermittent failure, the system is OK at this time.?
     
NO
     
     
     
Go to step 3.
3.
Open wire check (BSM SW line):

Open wire check (BSM SW line)
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connector.

?3.
Turn the vehicle to the ON mode.

?4.
Go into the System Diagnostic Mode, and select the Detail Information & Setting.

?5.
Select LaneWatch in the Functional Setup.

?6.
Connect terminals A and B with a jumper wire.
Terminal A
Combination light switch 12P connector No. 4 (BLU)
Terminal B
Body ground


Does LaneWatch Switch turn on?

     
YES
     
     
     
The BSM SW wire is OK. Go to step 4.
     
NO
     
     
     
Repair an open in the wire between the combination light switch and the audio unit or the audio-navigation unit.?
4.
Open wire check (GND line):

Open wire check (GND line)
?1.
Connect terminals A and B with a jumper wire.
Terminal A
Combination light switch 12P connector No. 3 (BLK)
Terminal B
Combination light switch 12P connector No. 4 (BLU)


Does LaneWatch Switch turn on?

     
YES
     
     
     
     
NO
     
     
     
Repair an open in the wire between the combination light switch and the body ground at G503.?
5.
Shorted wire check (BSM VCC line) 1:

Shorted wire check (BSM VCC line) 1
?1.
Turn the vehicle to the OFF (LOCK) mode.

?2.
Disconnect the following connectors.

?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 circuit
BSM VCC
Test point 1
LaneWatch camera 6P connector No. 6
Test point 2
Body ground


Is there about 8V?

     
YES
     
     
     
The BSM VCC wire is OK. Go to step 6.
     
NO
     
     
     
Go to step 10.
6.
Open wire check (SH BSM line):

Open wire check (SH BSM 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
Test circuit
SH BSM
Test point 1
LaneWatch camera 6P connector No. 1
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
The SH BSM wire is OK. Go to step 7.
     
NO
     
     
     
Repair an open in the wire between the LaneWatch camera and the audio unit or the audio-navigation unit.?
7.
Shorted wire check (BSM TO UNIT, UNIT TO BSM line) 1:

Shorted wire check (BSM TO UNIT, UNIT TO BSM line) 1
?1.
Disconnect the following connectors.

?2.
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 C (24P): disconnected
Test circuit
BSM TO UNIT
Test point 1
LaneWatch camera 6P connector No. 5
Test point 2
Body ground

Test circuit
UNIT TO BSM
Test point 1
LaneWatch camera 6P connector No. 2
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
Repair a short to bodyground in the wire between the LaneWatch camera and the audio unit or the audio-navigation unit.?
     
NO
     
     
     
Go to step 8.
8.
Shorted wire check (BSM TO UNIT, UNIT TO BSM line) 2:

Shorted wire check (BSM TO UNIT, UNIT TO BSM line) 2
?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 C (24P): disconnected
Test circuit
BSM TO UNIT and UNIT TO BSM
Test point 1
LaneWatch camera 6P connector No. 2
Test point 2
LaneWatch camera 6P connector No. 5


Is there continuity?

     
YES
     
     
     
Repair a short in the wire between the LaneWatch camera and the audio unit or the audio-navigation unit.?
     
NO
     
     
     
Go to step 9.
9.
Open wire check (BSM TO UNIT, UNIT TO BSM line):

Open wire check (BSM TO UNIT, UNIT TO BSM 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 C (24P): disconnected
Test circuit
UNIT TO BSM
Test point 1
LaneWatch camera 6P connector No. 2
Test point 2
Audio unit or audio-navigation unit connector C (24P) No. 22 (YEL)

Test circuit
BSM TO UNIT
Test point 1
LaneWatch camera 6P connector No. 5
Test point 2
Audio unit or audio-navigation unit connector C (24P) No. 23 (GRN)


Is there continuity?

     
YES
     
     
     
The BSM TO UNIT, UNIT TO BSM wires are OK. Replace the LaneWatch camera.?
     
NO
     
     
     
Repair an open in the wire between the LaneWatch camera and the audio unit or the audio-navigation unit.?
10.
Shorted wire check (BSM VCC line) 2:

Shorted wire check (BSM VCC line) 2
?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
 
LaneWatch camera 6P connector: disconnected
 
Audio unit or audio-navigation unit connector C (24P): disconnected
Test circuit
BSM VCC
Test point 1
LaneWatch camera 6P connector No. 6
Test point 2
Body ground


Is there continuity?

     
YES
     
     
     
Repair a short in the wire between the LaneWatch camera and the audio unit or the audio-navigation unit.?
     
NO
     
     
     
Go to step 11.
11.
Open wire check (BSM VCC line):

Open wire check (BSM VCC 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 C (24P): disconnected
Test circuit
BSM VCC
Test point 1
LaneWatch camera 6P connector No. 6
Test point 2
Audio unit or audio-navigation unit connector C (24P) No. 21 (RED)


Is there continuity?

     
YES
     
     
     
The BSM VCC wire is OK. Replace the LaneWatch camera.?
     
NO
     
     
     
Repair an open in the wire between the LaneWatch camera and the audio unit or the audio-navigation unit.?