Use the following procedure to troubleshoot the lane departure alert system.
*: Use the Techstream.
VEHICLE BROUGHT TO WORKSHOP
INSPECT AUXILIARY BATTERY VOLTAGE
Measure the auxiliary battery voltage with the power switch off.
|11 to 14 V|
If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step.
CHECK CAN COMMUNICATION SYSTEM*
Use the Techstream to check if the CAN communication system is functioning normally.
|CAN communication system DTCs are not output||A|
|CAN communication system DTCs are output||B|
GO TO CAN COMMUNICATION SYSTEM Click here
CHECK FOR DTCs (LANE DEPARTURE ALERT SYSTEM)*
Check for DTCs and note any codes that are output Click here.
Clear the DTCs Click here.
Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs Click here.
|DTCs are not output||A|
|DTCs are output||B|
GO TO DIAGNOSTIC TROUBLE CODE CHART Click here
PROBLEM SYMPTOMS TABLE
Refer to Problem Symptoms Table Click here.
|Fault is not listed in Problem Symptoms Table||A|
|Fault is listed in Problem Symptoms Table||B|
Go to step 8
OVERALL ANALYSIS AND TROUBLESHOOTING*
ADJUST, REPAIR OR REPLACE
When the lane departure warning camera is replaced with a new one, adjustment of the lane departure warning camera axis must be performed Click here.