LANE DEPARTURE ALERT SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code	DTC Name
	HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips

Use these procedures to troubleshoot the lane departure alert system.
*: Use the GTS.

PROCEDURE

VEHICLE BROUGHT TO WORKSHOP

Result

Proceed to
NEXT

INSPECT BATTERY VOLTAGE

Measure the battery voltage.

Standard Voltage
11 to 14 V

If the voltage is below 11 V, replace or recharge the battery before proceeding to the next step.

Result

Proceed to
NEXT

CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

Use the GTS to check if the CAN communication system is functioning normally.

for LHD: Click here
for RHD: Click here

Result

Result	Proceed to
CAN DTC is not output	A
CAN DTC is output (for LHD)	B
CAN DTC is output (for RHD)	C

GO TO CAN COMMUNICATION SYSTEM Click here

CHECK FOR DTCs*

Refer to DTC Check / Clear.

Click here

Check for DTCs and note any codes that are output.
Clear the DTCs.

Recheck for DTCs. Based on the DTCs output in the first step, try to reproduce the lane departure alert system DTCs by simulating the conditions indicated by the DTCs.

Result

Result	Proceed to
DTCs are not output	A
DTCs are output	B

GO TO DTC CHART Click here

PROBLEM SYMPTOMS TABLE

Refer to Problem Symptoms Table ( Click here).

Result

Result	Proceed to
Fault is not listed in problem symptoms table	A
Fault is listed in problem symptoms table	B

GO TO STEP 8 Click here

OVERALL ANALYSIS AND TROUBLESHOOTING*

Terminals of ECU.

Click here

Data List / Active Test.

Click here

Result

Proceed to
NEXT

ADJUST, REPAIR OR REPLACE

Note

When the forward recognition camera is replaced with a new one, adjustment of the forward recognition camera optical axis must be performed.

Click here

Result

Proceed to
NEXT

CONFIRMATION TEST

Result

Proceed to
NEXT

END