LaneWatch Symptom Troubleshooting - Does not switch to the Lanewatch screen (Without Touch Screen)

1.

Lanewatch camera check:

Lanewatch camera check

?1.	Start the engine.

?2.	Go into the System Diagnostic Mode.

?3.	Push the MENU button, and then push the Preset 5 button.

?4.

Whenever push the Preset 5 button, change the following screen.

ISP, ROM, CMOS, SW, MICU, BUS, ISP

Is diagnostic ok?


	YES

Go to step 2.


	NO

Go to step 5.

2.

Lanewatch switch check:

Lanewatch switch check

?1.	Back to the ISP screen, and then push the Preset 5 button 3 times.

?2.	Operate the lanewatch switch.

Is the lanewatch switch ok?


	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.	Press the engine start/stop button to select the OFF mode.

?2.

Disconnect the following connector.

Combination light switch 12P connector

?3.	Press the engine start/stop button to select the ON mode.

?4.	Go into the System Diagnostic Mode.

?5.	Push the MENU button, and then push the Preset 5 button 3 times.

?6.

Connect terminals A and B with a jumper wire.

Terminal A	Combination light switch 12P connector No. 4 (BLU)
Terminal B	Body ground

Is SW ON on the display?


	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.?

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)

Is SW ON on the display?


	YES

The GND wire is OK. Replace the combination light switch.?


	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.	Press the engine start/stop button to select the OFF mode.

?2.

Disconnect the following connectors.

Lanewatch camera 6P connector

?3.	Press the engine start/stop button to select the ON mode.

?4.

Measure the voltage between test points 1 and 2.

Test condition	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.	Press the engine start/stop button to select the OFF mode.

?2.

Check for continuity between test points 1 and 2.

Test condition	OFF 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.?

7.

Shorted wire check (BSM TO UNIT, UNIT TO BSM line) 1:

Shorted wire check (BSM TO UNIT, UNIT TO BSM line) 1

?1.	Press the engine start/stop button to select the OFF mode.

?2.

Disconnect the following connectors.

Audio unit connector G (24P)

?3.

Check for continuity between test points 1 and 2.

Test condition	OFF mode
	Lanewatch camera 6P connector: disconnected
	Audio unit connector G (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.?


	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	OFF mode
	Lanewatch camera 6P connector: disconnected
	Audio unit connector G (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.?


	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	OFF mode
	Lanewatch camera 6P connector: disconnected
	Audio unit connector G (24P): disconnected
Test circuit	UNIT TO BSM
Test point 1	Lanewatch camera 6P connector No. 2
Test point 2	Audio unit connector G (24P) No.22 (YEL)

Test circuit	BSM TO UNIT
Test point 1	Lanewatch camera 6P connector No. 5
Test point 2	Audio unit connector G (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.?

10.

Shorted wire check (BSM VCC line) 2:

Shorted wire check (BSM VCC line) 2

?1.	Press the engine start/stop button to select the OFF mode.

?2.

Disconnect the following connectors.

Audio unit connector G (24P)

?3.

Check for continuity between test points 1 and 2.

Test condition	OFF mode
	Lanewatch camera 6P connector: disconnected
	Audio unit connector G (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.?


	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	OFF mode
	Lanewatch camera 6P connector: disconnected
	Audio unit connector G (24P): disconnected
Test circuit	BSM VCC
Test point 1	Lanewatch camera 6P connector No. 6
Test point 2	Audio unit connector G (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.?